Springboot(总结完毕!)2021.1.27

2023-11-08 22:30

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一日一句:“做什么事都很难 大不了从头再来吧”

微服务阶段

javase:OOP

mysql:持久化

html+css+js+jquery+框架:视图,框架不熟练,css不好;

Javaweb:独立开发MVC三层架构的网站:原始

ssm:框架:简化了我们的开发流程,配置也开始较为复杂;

以上都是打war:外置tomcat运行

spring再简化:springboot-jar:内嵌tomcat;微服务架构!

服务越来越多:springcloud;
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什么是微服务?

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  • 原文地址:http://martinfowler.com/articles/microservices.html
  • 翻译:https://www.cnblogs.com/liuning8023/p/443156.html
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什么是spring?

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什么是springboot?

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约定大于配置

springboot的优点

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第一个springboot程序

去spring.io官网
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第一个springboot程序
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springboot原理初探
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@SpringBootApplication
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结论
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run()方法
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SpringBoot的配置文件以及自动装配原理
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yaml对空格的要求十分高**

yaml可以直接给实体类赋值
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JSR303数据校验

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@Validated //数据校验
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多环境配置以及配置文件位置

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application.yml

server:port: 8001
spring:profiles:active: dev
---server:port: 8002
spring:profiles: dev
---server:port: 8003
spring:profiles: test

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application.yml

# 配置文件到底能写什么? ---联系---spring.factories# 在我们这配置文件中能配置的东西,都存在一个固有的规律
# xxxconfiguration  xxxproperties  和 配置文件绑定,我们就可以使用自定义的配置了!# 可以通过  来查看,那些自动类生效,那些没有生效
debug: true

SpringBoot Web开发

jar:webapp!

自动装配

1.创建应用,选择模块!

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静态资源

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什么是webjars?

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优先级:resources>static>public

public:一般存放公共文件js

static:照片啊之类的(默认)

resources:上传的文件
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首页定制

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创建一个IndexController api接口,来跳转访问index首页

package com.liang.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;//在templates目录下的所有页面,只能通过controller来跳转
//直接跳转访问这个需要模板引擎的支持! 没有引入就报500  需要引入template的依赖
@Controller
public class IndexController {@RequestMapping("/x")public String index(){return "index";}
}

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访问默认图标设置

复制一个图片改名字为favicon.ico放到static里面,清楚浏览器缓存

访问就ok了!
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模板引擎

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就是之前的jsp

首先导入thymeleaf依赖
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	public static final String DEFAULT_PREFIX = "classpath:/templates/";public static final String DEFAULT_SUFFIX = ".html";

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controller代码

package com.liang.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;//在templates目录下的所有页面,只能通过controller来跳转
//直接跳转访问这个需要模板引擎的支持! 没有引入就报500  需要引入template的依赖
@Controller
public class IndexController {@RequestMapping("/x")public String index(){return "test";}
}

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想要使用thymeleaf模板,首先导入命令空间

xmlns:th="http://www.thymeleaf.org"
<html lang="en" xmlns:th="http://www.thymeleaf.org">

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test.html代码

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<!--所以的html元素,都可以被thymeleaf替换接管: th:元素名-->
<h1>thymeleaf模板引擎你好</h1>
<h1 th:text="${msg}"></h1>
</body>
</html>

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<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<!--所以的html元素,都可以被thymeleaf替换接管: th:元素名--><div th:text="${msg}"></div>
<div th:utext="${msg}"></div><!--不转义--><hr><!--<h3 th:each="user:${users}">[[${user}]]</h3>-->
<h3 th:each="user:${users}" th:text="${user}"></h3></body>
</html>

springmvc的配置原理

官方文档地址:https://docs.spring.io/spring-boot/docs/2.1.6.RELEASE/reference/html/boot-features-developing-web-applications.html

自己定义一个MyMvcConfig

package com.liang.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;import java.util.Locale;/*
如果,你想diy一些定制化的功能,只要写这个组件,然后把它交给springboot,springboot
springboot就会帮我们自动装配*///拓展 springmvc  dispatcherServlet
@Configuration
public class MyMvcConfig implements WebMvcConfigurer {// public interface  ViewResolver 实现了视图解析器接口的类,我们就可以把它看做视图解析器//自定义一个自己的视图解析器MyViewResolver   静态内部类public static class MyViewResolver implements ViewResolver{@Beanpublic ViewResolver myViewResolver(){return new MyViewResolver();}@Overridepublic View resolveViewName(String s, Locale locale) throws Exception {return null;}}}

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@EnableWebMvc  //这玩意导入一个类:DelegatingWebMvcConfiguration:从容器中获取所有的WebMvcconfig

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thymeleaf常用命名空间

xmlns:th="http://www.thymeleaf.org"
xmlns:sec="http://www.thymeleaf.org/extras/spring-security"
xmlns:shiro="http://www.pollix.at/thymeleaf/shiro"<html lang="en" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/extras/spring-security"xmlns:shiro="http://www.pollix.at/thymeleaf/shiro"> 

整合JDBC

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报了市区异常
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application.yml


spring:datasource:username: rootpassword: root#加入时区报错了,就增加一个时区ok了&serverTimezone=UTC&url: jdbc:mysql://localhost:3306/mybatis?&serverTimezone=UTC&useUnicode=false&charactEncoding=utf-8driver-class-name: com.mysql.jdbc.Driver

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查询数据库
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JDBCController

package com.liang.controller;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;import java.util.List;
import java.util.Map;@RestController  //这个是mvc的注解
public class JDBCController {@AutowiredJdbcTemplate jdbcTemplate;//查询数据库的所有信息//没有实体类,数据库中的东西,怎么获取?map@GetMapping("userList")public List<Map<String,Object>> userList(){String sql = "select * from user";List<Map<String, Object>> map = jdbcTemplate.queryForList(sql);return map;}@GetMapping("/addUser")public String addUser(){String sql="insert into mybatis.user(id,name,pwd) values (1,'平面','123123')";jdbcTemplate.update(sql);//这个帮我们做了事务return "update-ok!!!";}@GetMapping("/updateUser/{id}")public String updateUser(@PathVariable("id") int id){String sql = "update mybatis.user set name=?,pwd=? where id="+id;//封装Object[] objects = new Object[2];objects[0]="小明22";objects[1]="lll";jdbcTemplate.update(sql,objects);return "updateUser-ok";}@GetMapping("/deleteUser/{id}")public String deleteUser(@PathVariable("id") int id){String sql="delete from mybatis.user where id=?";jdbcTemplate.update(sql,id);return "deleteUser-ok!!";}
}

整合DRUID数据源

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导入依赖

     <dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.1</version></dependency>

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application.yml

spring:datasource:username: rootpassword: root#加入时区报错了,就增加一个时区ok了?&serverTimezone=UTC&url: jdbc:mysql://localhost:3306/mybatis?&serverTimezone=UTC&useUnicode=false&charactEncoding=utf-8driver-class-name: com.mysql.jdbc.Drivertype: com.alibaba.druid.pool.DruidDataSource #配置数据源#SpringBoot默认是不注入这些的,需要自己绑定#druid数据源专有配置initialSize: 5minIdle: 5maxActive: 20maxWait: 60000timeBetweenEvictionRunsMillis: 60000minEvictableIdleTimeMillis: 300000validationQuery: SELECT 1 FROM DUALtestWhileIdle: truetestOnBorrow: falsetestOnReturn: falsepoolPreparedStatements: true#配置监控统计拦截的filters,stat:监控统计、log4j:日志记录、wall:防御sql注入#如果允许报错,java.lang.ClassNotFoundException: org.apache.Log4j.Properity#则导入log4j 依赖就行filters: stat,wall,log4jmaxPoolPreparedStatementPerConnectionSize: 20useGlobalDataSourceStat: trueconnectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
 <!--导入log4j日志依赖--><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.12</version></dependency>

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DruidConfig德鲁伊监视器配置文件

package com.liang.config;import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import javax.sql.DataSource;
import java.util.HashMap;@Configuration
public class DruidConfig {@ConfigurationProperties(prefix = "spring.datasource")@Beanpublic DataSource druidDataSource(){return new DruidDataSource();}//后台监控:web.xml  ServletRegistrationBean//因为springboot内置了servlet容器,所以没有web.xml,替代方法ServletRegistrationBean@Bean //这个不能漏public ServletRegistrationBean a(){ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");//后台需要有人登陆,账号密码配置HashMap<String,String> initParameters = new HashMap<>();//添加配置initParameters.put("loginUsername","admin");//登录的key,是固定的 loginUsername loginPasswordinitParameters.put("loginPassword", "123456");//允许谁访问initParameters.put("allow", "");//所有人可以访问//禁止谁能访问initParameters.put("liang", "192.168.1212");bean.setInitParameters(initParameters);//设置初始化参数return bean;}//filter@Beanpublic FilterRegistrationBean webStatFilter(){FilterRegistrationBean bean = new FilterRegistrationBean();bean.setFilter(new WebStatFilter());//可以过滤那些请求?HashMap<String,String> initParameters = new HashMap<>();//这些东西不进行统计initParameters.put("exclusions", "*.js,*.css,/druid/*");bean.setInitParameters(initParameters);return bean;}
}

执行一条sql语句后,就可以看到德鲁伊检测器那里有数据了
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整合Mybatis

整合包

  1. 导入包
  2. 配置文件
  3. mybatis配置
  4. 编写sql
  5. service层调用dao层
  6. controller调用service层

mybatis-spring-boot-starter
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导入依赖

  <dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.3</version></dependency>

applica.yml配置文件


spring:datasource:username: rootpassword: root#加入时区报错了,就增加一个时区ok了&serverTimezone=UTC&url: jdbc:mysql://localhost:3306/mybatis?&serverTimezone=UTC&useUnicode=false&charactEncoding=utf-8driver-class-name: com.mysql.jdbc.Driver#整合mybatis
mybatis:type-aliases-package: com.liang.pojomapper-locations: classpath:mybatis/mapper/*.xml

测试是否连接数据库成功
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在idea连接数据库

建一个pojo实体类包,建user实体类

package com.liang.pojo;import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {private int id;private String name;private String pwd;
}
@MapperScan("com.liang.mapper")//扫描所以mapper下面的类

建一个mapper包,UserMapper接口

package com.liang.mapper;import com.liang.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;import java.util.List;//这个注解表示了这是一个mybatis的mapper类  Dao
@Mapper
@Repository  //把这个类注入bean
public interface UserMapper {List<User> queryUserList();User queryUserById(int id);int addUser(User user );int updateUser(User user);int deleteUser(int id);}

然后在resources下建一个mybatis包下建一个mapper包建一个UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.liang.mapper.UserMapper"><select id="queryUserList" resultType="User">select *from user;</select><select id=" queryUserById" resultType="User">select * from user where id = #{id}
</select><insert id="addUser" parameterType="User">insert into user (id,name,pwd) values (#{id},#{name},#{pwd})</insert><update id="updateUser" parameterType="User">update user set name =#{name },pwd=#{pwd} where id=#{id}</update><delete id="deleteUser" parameterType="int">delete  from user where id=#{id}</delete>
</mapper>

成功获取数据

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UserController

package com.liang.controller;import com.liang.mapper.UserMapper;
import com.liang.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController
public class UserController {@Autowiredprivate UserMapper userMapper;@GetMapping("/queryList")public List<User> queryUserList(){List<User> userList = userMapper.queryUserList();for (User user : userList) {System.out.println(user);}return userList;}//添加一个用户@GetMapping("/addUser")public String addUser(){userMapper.addUser(new User(19,"jack","55555"));return "ok";}//修改一个用户@GetMapping("/updateUser")public String updateUser(){userMapper.updateUser(new User(19,"avavva","|777"));return "ok";}//根据id删除用户@RequestMapping("deleteUser")public String deleteUser(){userMapper.deleteUser(19);return "ok";}}
//不需要事务了,mybatis已经配好了

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SpringSecurity(安全)环境搭建

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在web开发中,安全第一位!过滤器,拦截器~

功能性需求:否

做网站:安全应该在什么时候考虑?设计之初!

  • 漏洞,隐私泄露~
  • 架构一旦确定~

shiro、SpringSecurity:他们很像,除了类不一样,名字不一样;

认证,授权(vip1,vip2,vip3)

  • 功能权限
  • 访问权限
  • 菜单权限
  • …拦截器,过滤器:大量的原生代码~太多冗余代码

新建一个项目

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导入thymeleaf依赖

    <!--thymeleaf模板--><dependency><groupId>org.thymeleaf</groupId><artifactId>thymeleaf-spring5</artifactId></dependency><dependency><groupId>org.thymeleaf.extras</groupId><artifactId>thymeleaf-extras-java8time</artifactId></dependency>

这个/不能漏,漏了就访问不到其下面的资源了

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RouterController

package com.liang.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class RouterController {@RequestMapping({"/","/index"})public String index() {return "index";}@RequestMapping("/toLogin")public String toLogin(){return "views/login";}@RequestMapping("/level1/{id}")public String level1(@PathVariable("id") int id){return "views/level1/"+id;}@RequestMapping("/level2/{id}")public String level2(@PathVariable("id") int id){return "views/level2/"+id;}@RequestMapping("/level3/{id}")public String level3(@PathVariable("id") int id){return "views/level3/"+id;//+id动态访问多个html文件}
}
用户认证和授权

导入security依赖

        <!--security--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency>

SecurityConfig固定格式

@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {@Overrideprotected void configure(HttpSecurity http) throws Exception {super.configure(http);}
}
授权

设置后就访问不到了,没有权限
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认证

SecurityConfig

package com.liang.config;import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;//AOP方法横切进去:  比拦截器好多了
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {//链式编程//授权@Overrideprotected void configure(HttpSecurity http) throws Exception {//首页所有人可以访问,功能也只有对应有权限的人才能访问//请求授权的规则http.authorizeRequests().antMatchers("/").permitAll().antMatchers("/level1/**").hasRole("vip1").antMatchers("/level2/**").hasRole("vip2").antMatchers("/level3/**").hasRole("vip3");//没有权限会到登录页面,需要开启登录的页面//Loginhttp.formLogin();}//认证,springboot 2.1.x 可以直接使用·//密码编码//在spring Secutiry 5.0+增加了很多加密方法~@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {//这些数据正常应该从数据库中读auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder()).withUser("liang").password(new BCryptPasswordEncoder().encode("123321")).roles("vip2","vip3").and().withUser("root").password(new BCryptPasswordEncoder().encode("123321")).roles("vip1","vip2","vip3").and().withUser("guest").password(new BCryptPasswordEncoder().encode("123321")).roles("vip1");//roles 是权限   guest:来宾}
}

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注销以及权限控制
   //注销,开启了注销功能,跳到首页//防止网站攻击: get ,posthttp.csrf().disable();//关闭csrf功能http.logout().logoutSuccessUrl("/");
   <!--注销-->              
<a class="item"th:href="@{/logout}">                  <i class="sort numeric upicon"></i> 注销               </a>

导入依赖

   <!--security-thymeleaf整合包--><dependency><groupId>org.thymeleaf.extras</groupId><artifactId>thymeleaf-extras-springsecurity4</artifactId><version>3.0.4.RELEASE</version></dependency>
导入命名空间
<html lang="en" xmlns:th="http://www.thymeleaf.org"      xmlns:sec="http://www.thymeleaf-extras-springsecurity4">

发现不生效,去把maven版本降到2.0.9

<!--菜单根据用户的角色动态实现--><div class="column" sec:suthorize="hsrRole('vip1')">

记住我和首页定制

//开启记住我功能 cookie客户端  默认存两周
cookiedhttp.rememberMe().rememberMeParameter("remember");//接收前端传过来的按钮数据

login.html添加记住我按钮

<div class="field">  //居中 <input type="checkbox" name="remember">记住我</div>

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SecurityConfig

package com.liang.config;import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;//AOP方法横切进去:  比拦截器好多了
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {//链式编程//授权@Overrideprotected void configure(HttpSecurity http) throws Exception {//首页所有人可以访问,功能也只有对应有权限的人才能访问//请求授权的规则http.authorizeRequests().antMatchers("/").permitAll().antMatchers("/level1/**").hasRole("vip1").antMatchers("/level2/**").hasRole("vip2").antMatchers("/level3/**").hasRole("vip3");//没有权限会到登录页面,需要开启登录的页面//Login//定制登陆页面http.formLogin().loginPage("/toLogin");//注销,开启了注销功能,跳到首页//防止网站攻击: get ,posthttp.csrf().disable();//关闭csrf功能http.logout().logoutSuccessUrl("/");//开启记住我功能  cookiehttp.rememberMe().rememberMeParameter("remember");}//认证,springboot 2.1.x 可以直接使用·//密码编码//在spring Secutiry 5.0+增加了很多加密方法~@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {//这些数据正常应该从数据库中读auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder()).withUser("liang").password(new BCryptPasswordEncoder().encode("123321")).roles("vip2","vip3").and().withUser("root").password(new BCryptPasswordEncoder().encode("123321")).roles("vip1","vip2","vip3").and().withUser("guest").password(new BCryptPasswordEncoder().encode("123321")).roles("vip1");//roles 是权限   guest:来宾}
}

Shiro

什么是shiro?

在这里插入图片描述
在这里插入图片描述
新建一个maven项目,shiro快速入门
在这里插入图片描述
GitHub代码Shiro地址:https://github.com/apache/shiro/tree/master/samples/quickstart

1.导入依赖

 <dependencies><dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-core</artifactId><version>1.4.1</version></dependency><!-- configure logging --><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>1.7.21</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.21</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency></dependencies>

2.配置文件

log4j.properties

log4j.rootLogger=INFO, stdoutlog4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n# General Apache libraries
log4j.logger.org.apache=WARN# Spring
log4j.logger.org.springframework=WARN# Default Shiro logging
log4j.logger.org.apache.shiro=INFO# Disable verbose logging
log4j.logger.org.apache.shiro.util.ThreadContext=WARN
log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN

shiro.ini

[users]
# user 'root' with password 'secret' and the 'admin' role
root = secret, admin
# user 'guest' with the password 'guest' and the 'guest' role
guest = guest, guest
# user 'presidentskroob' with password '12345' ("That's the same combination on
# my luggage!!!" ;)), and role 'president'
presidentskroob = 12345, president
# user 'darkhelmet' with password 'ludicrousspeed' and roles 'darklord' and 'schwartz'
darkhelmet = ludicrousspeed, darklord, schwartz
# user 'lonestarr' with password 'vespa' and roles 'goodguy' and 'schwartz'
lonestarr = vespa, goodguy, schwartz# -----------------------------------------------------------------------------
# Roles with assigned permissions
#
# Each line conforms to the format defined in the
# org.apache.shiro.realm.text.TextConfigurationRealm#setRoleDefinitions JavaDoc
# -----------------------------------------------------------------------------
[roles]
# 'admin' role has all permissions, indicated by the wildcard '*'
admin = *
# The 'schwartz' role can do anything (*) with any lightsaber:
schwartz = lightsaber:*
# The 'goodguy' role is allowed to 'drive' (action) the winnebago (type) with
# license plate 'eagle5' (instance specific id)
goodguy = winnebago:drive:eagle5

3.helloworld

Quickstart

/** Licensed to the Apache Software Foundation (ASF) under one* or more contributor license agreements.  See the NOTICE file* distributed with this work for additional information* regarding copyright ownership.  The ASF licenses this file* to you under the Apache License, Version 2.0 (the* "License"); you may not use this file except in compliance* with the License.  You may obtain a copy of the License at**     http://www.apache.org/licenses/LICENSE-2.0** Unless required by applicable law or agreed to in writing,* software distributed under the License is distributed on an* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY* KIND, either express or implied.  See the License for the* specific language governing permissions and limitations* under the License.*/import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;import org.apache.shiro.mgt.DefaultSecurityManager;import org.apache.shiro.realm.text.IniRealm;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;/*** Simple Quickstart application showing how to use Shiro's API.** @since 0.9 RC2*/
public class Quickstart {private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);public static void main(String[] args) {// The easiest way to create a Shiro SecurityManager with configured// realms, users, roles and permissions is to use the simple INI config.// We'll do that by using a factory that can ingest a .ini file and// return a SecurityManager instance:// Use the shiro.ini file at the root of the classpath// (file: and url: prefixes load from files and urls respectively):DefaultSecurityManager securityManager = new DefaultSecurityManager();IniRealm iniRealm = new IniRealm("classpath:shiro.ini");securityManager.setRealm(iniRealm);// for this simple example quickstart, make the SecurityManager// accessible as a JVM singleton.  Most applications wouldn't do this// and instead rely on their container configuration or web.xml for// webapps.  That is outside the scope of this simple quickstart, so// we'll just do the bare minimum so you can continue to get a feel// for things.SecurityUtils.setSecurityManager(securityManager);// Now that a simple Shiro environment is set up, let's see what you can do:// get the currently executing user:Subject currentUser = SecurityUtils.getSubject();// Do some stuff with a Session (no need for a web or EJB container!!!)Session session = currentUser.getSession();session.setAttribute("someKey", "aValue");String value = (String) session.getAttribute("someKey");if (value.equals("aValue")) {log.info("Retrieved the correct value! [" + value + "]");}// let's login the current user so we can check against roles and permissions:if (!currentUser.isAuthenticated()) {UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");token.setRememberMe(true);try {currentUser.login(token);} catch (UnknownAccountException uae) {log.info("There is no user with username of " + token.getPrincipal());} catch (IncorrectCredentialsException ice) {log.info("Password for account " + token.getPrincipal() + " was incorrect!");} catch (LockedAccountException lae) {log.info("The account for username " + token.getPrincipal() + " is locked.  " +"Please contact your administrator to unlock it.");}// ... catch more exceptions here (maybe custom ones specific to your application?catch (AuthenticationException ae) {//unexpected condition?  error?}}//say who they are://print their identifying principal (in this case, a username):log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");//test a role:if (currentUser.hasRole("schwartz")) {log.info("May the Schwartz be with you!");} else {log.info("Hello, mere mortal.");}//test a typed permission (not instance-level)if (currentUser.isPermitted("lightsaber:wield")) {log.info("You may use a lightsaber ring.  Use it wisely.");} else {log.info("Sorry, lightsaber rings are for schwartz masters only.");}//a (very powerful) Instance Level permission:if (currentUser.isPermitted("winnebago:drive:eagle5")) {log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +"Here are the keys - have fun!");} else {log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");}//all done - log out!currentUser.logout();System.exit(0);}
}

成功打印出日志

D:\JavaEnvironment\jdk1.8.0_152\bin\java.exe "-javaagent:D:\Study software\IntelliJ IDEA 2020.3\lib\idea_rt.jar=53515:D:\Study software\IntelliJ IDEA 2020.3\bin" -Dfile.encoding=UTF-8 -classpath D:\JavaEnvironment\jdk1.8.0_152\jre\lib\charsets.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\deploy.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\access-bridge-64.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\cldrdata.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\dnsns.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\jaccess.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\jfxrt.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\localedata.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\nashorn.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\sunec.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\sunjce_provider.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\sunmscapi.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\sunpkcs11.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\ext\zipfs.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\javaws.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\jce.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\jfr.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\jfxswt.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\jsse.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\management-agent.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\plugin.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\resources.jar;D:\JavaEnvironment\jdk1.8.0_152\jre\lib\rt.jar;D:\IdeaWorkSpace2\springboot\springboot-08-shiro\hello-shiro\target\classes;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-core\1.4.1\shiro-core-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-lang\1.4.1\shiro-lang-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-cache\1.4.1\shiro-cache-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-crypto-hash\1.4.1\shiro-crypto-hash-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-crypto-core\1.4.1\shiro-crypto-core-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-crypto-cipher\1.4.1\shiro-crypto-cipher-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-config-core\1.4.1\shiro-config-core-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-config-ogdl\1.4.1\shiro-config-ogdl-1.4.1.jar;C:\Users\Administrator\.m2\repository\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar;C:\Users\Administrator\.m2\repository\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar;C:\Users\Administrator\.m2\repository\org\apache\shiro\shiro-event\1.4.1\shiro-event-1.4.1.jar;C:\Users\Administrator\.m2\repository\org\slf4j\jcl-over-slf4j\1.7.21\jcl-over-slf4j-1.7.21.jar;C:\Users\Administrator\.m2\repository\org\slf4j\slf4j-api\1.7.21\slf4j-api-1.7.21.jar;C:\Users\Administrator\.m2\repository\org\slf4j\slf4j-log4j12\1.7.21\slf4j-log4j12-1.7.21.jar;C:\Users\Administrator\.m2\repository\log4j\log4j\1.2.17\log4j-1.2.17.jar Quickstart
2021-01-21 14:07:13,605 INFO [org.apache.shiro.session.mgt.AbstractValidatingSessionManager] - Enabling session validation scheduler... 
2021-01-21 14:07:13,850 INFO [Quickstart] - Retrieved the correct value! [aValue] 
2021-01-21 14:07:13,851 INFO [Quickstart] - User [lonestarr] logged in successfully. 
2021-01-21 14:07:13,851 INFO [Quickstart] - May the Schwartz be with you! 
2021-01-21 14:07:13,851 INFO [Quickstart] - You may use a lightsaber ring.  Use it wisely. 
2021-01-21 14:07:13,851 INFO [Quickstart] - You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  Here are the keys - have fun! 
Shiro的Subject分析在这里插入图片描述

Quickstart官网演示代码

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.mgt.DefaultSecurityManager;
import org.apache.shiro.realm.text.IniRealm;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;/*** Simple Quickstart application showing how to use Shiro's API.** @since 0.9 RC2*/
public class Quickstart {private static final transient Logger log = LoggerFactory.getLogger(Quickstart.class);public static void main(String[] args) {// The easiest way to create a Shiro SecurityManager with configured// realms, users, roles and permissions is to use the simple INI config.// We'll do that by using a factory that can ingest a .ini file and// return a SecurityManager instance:// Use the shiro.ini file at the root of the classpath// (file: and url: prefixes load from files and urls respectively):DefaultSecurityManager securityManager = new DefaultSecurityManager();IniRealm iniRealm = new IniRealm("classpath:shiro.ini");securityManager.setRealm(iniRealm);// for this simple example quickstart, make the SecurityManager// accessible as a JVM singleton.  Most applications wouldn't do this// and instead rely on their container configuration or web.xml for// webapps.  That is outside the scope of this simple quickstart, so// we'll just do the bare minimum so you can continue to get a feel// for things.SecurityUtils.setSecurityManager(securityManager);// Now that a simple Shiro environment is set up, let's see what you can do:// get the currently executing user://获取当前的用户对象 subjectSubject currentUser = SecurityUtils.getSubject();// Do some stuff with a Session (no need for a web or EJB container!!!)//通过当前用户拿到sessionSession session = currentUser.getSession();session.setAttribute("someKey", "aValue");String value = (String) session.getAttribute("someKey");if (value.equals("aValue")) {log.info("Retrieved the correct value! [" + value + "]");}// let's login the current user so we can check against roles and permissions://判断当前的用户是否被认证//token:令牌,没有获取,随机if (!currentUser.isAuthenticated()) {UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");token.setRememberMe(true);//设置记住我try {currentUser.login(token);//执行了登录操作} catch (UnknownAccountException uae) {log.info("There is no user with username of " + token.getPrincipal());} catch (IncorrectCredentialsException ice) {log.info("Password for account " + token.getPrincipal() + " was incorrect!");} catch (LockedAccountException lae) {log.info("The account for username " + token.getPrincipal() + " is locked.  " +"Please contact your administrator to unlock it.");}// ... catch more exceptions here (maybe custom ones specific to your application?catch (AuthenticationException ae) {//unexpected condition?  error?}}//say who they are://print their identifying principal (in this case, a username):log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");//test a role:if (currentUser.hasRole("schwartz")) {log.info("May the Schwartz be with you!");} else {log.info("Hello, mere mortal.");}//test a typed permission (not instance-level)if (currentUser.isPermitted("lightsaber:wield")) {log.info("You may use a lightsaber ring.  Use it wisely.");} else {log.info("Sorry, lightsaber rings are for schwartz masters only.");}//a (very powerful) Instance Level permission:if (currentUser.isPermitted("winnebago:drive:eagle5")) {log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +"Here are the keys - have fun!");} else {log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");}//注销//all done - log out!currentUser.logout();System.exit(0);}
}
springboot整合shiro环境搭建

新建一个moudel springboot工程

<!--
shiro三大对象
subject  用户s
ecurityManager 管理所有用户
Realm 连接数据
-->

导入依赖

   <!--shiro整合spring的包--><dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-spring</artifactId><version>1.4.1</version></dependency>

编写shiro的两个核心配置

ShiroConfig

package com.liang.config;import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier( "securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);return bean;}//DefaultWebSecurityManager@Bean(name = "securityManager")public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();//关联UserRealmsecurityManager.setRealm(userRealm);return securityManager;
}//创建realm 对象,需要自定义类 :第一步@Beanpublic UserRealm userRealm(){return new UserRealm();}
}

UserRealm

package com.liang.config;import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;//自定义的UserRealm   extends AuthorizingRealm
public class UserRealm  extends AuthorizingRealm {//授权@Overrideprotected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {System.out.println("执行了=》授权doGetAuthorizationInfo");return null;}//认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {System.out.println("执行了=》认证doGetAuthenticationInfo");return null;}
}

MyController

package com.liang.controller;import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class MyController {@RequestMapping({"/","index"})public String toIndex(Model model){model.addAttribute("msg","hello,shiro");return "index";}@RequestMapping("/user/add")public String add(){return "user/add";}@RequestMapping("/user/update")public String update(){return "user/update";}
}

index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>首页</h1><p th:text="${msg}"></p>
<hr><a th:href="@{/user/add}">add</a>   |   <a th:href="@{/user/update}">update</a></body>
</html>

在这里插入图片描述

shiro实现登录拦截

ShiroConfig

package com.liang.config;import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.LinkedHashMap;
import java.util.Map;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier( "securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);//添加shiro的内置过滤器/*anon:无需认证就可以访问authc:必须认证才能访问user:必须拥有  记住我 功能才能用perms: 拥有对某个资源的权限才能访问role: 拥有某个角色权限才能访问*///登录拦截Map<String,String> filterMap = new LinkedHashMap<>();
//        filterMap.put("/user/add","authc");
//        filterMap.put("/user/update","authc");filterMap.put("/user/*", "authc");bean.setFilterChainDefinitionMap(filterMap);//设置登录页面bean.setLoginUrl("/toLogin");return bean;}//DefaultWebSecurityManager@Bean(name = "securityManager")public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();//关联UserRealmsecurityManager.setRealm(userRealm);return securityManager;
}//创建realm 对象,需要自定义类 :第一步@Beanpublic UserRealm userRealm(){return new UserRealm();}
}

MyController

@RequestMapping("/user/add")public String add(){return "user/add";}@RequestMapping("/user/update")public String update(){return "user/update";}@RequestMapping("/toLogin")public String toLogin(){return "login";}

login.html

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>登录</h1><form action=""><p>用户名:<input type="text" name="username"></p><p>密码:<input type="text" name="password"></p><p><input type="submit"></p>
</form>
</body>
</html>

在这里插入图片描述

shiro实现用户认证

在这里插入图片描述
MyController

@RequestMapping("login")public String login(String username,String password,Model model){//获取当前的用户Subject subject = SecurityUtils.getSubject();//封装用户的登录数据UsernamePasswordToken token = new UsernamePasswordToken(username, password);try{subject.login(token);//执行登录的方法,如果没有异常就说明ok了return "index";}catch (UnknownAccountException uae){//用户名不存在model.addAttribute("msg","用户名错误");return "login";}catch (IncorrectCredentialsException ice){//密码不存在model.addAttribute("msg","密码错误");return "login";}}

login.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>登录</h1>
<hr>
<p th:text="${msg}" style="color: red"></p><form th:action="@{/login}"><p>用户名:<input type="text" name="username"></p><p>密码:<input type="text" name="password"></p><p><input type="submit"></p>
</form>
</body>
</html>

UserRealm

 //认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {System.out.println("执行了=》认证doGetAuthenticationInfo");//用户名,密码  数据库中取String username="liang";String password="123321";UsernamePasswordToken userToken = (UsernamePasswordToken) authenticationToken;if (userToken.getUsername().equals(username)){return null;//抛出异常 UnknownAccountException}//密码认证,shiro做return new SimpleAuthenticationInfo("",password,"");}
shiro整合mybatis

导入数据库驱动和mybatis各种依赖

    <!--数据库驱动--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.12</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.1</version></dependency>
<!--引入mybatis,这是mybatis官方提供的适配springboot的,而不是springboot自己的--><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.0</version></dependency>

配置application.yml配置文件

spring:datasource:username: rootpassword: root#加入时区报错了,就增加一个时区ok了?&serverTimezone=UTC&url: jdbc:mysql://localhost:3306/mybatis?&serverTimezone=UTC&useUnicode=false&charactEncoding=utf-8driver-class-name: com.mysql.jdbc.Drivertype: com.alibaba.druid.pool.DruidDataSource #配置数据源#SpringBoot默认是不注入这些的,需要自己绑定#druid数据源专有配置initialSize: 5minIdle: 5maxActive: 20maxWait: 60000timeBetweenEvictionRunsMillis: 60000minEvictableIdleTimeMillis: 300000validationQuery: SELECT 1 FROM DUALtestWhileIdle: truetestOnBorrow: falsetestOnReturn: falsepoolPreparedStatements: true#配置监控统计拦截的filters,stat:监控统计、log4j:日志记录、wall:防御sql注入#如果允许报错,java.lang.ClassNotFoundException: org.apache.Log4j.Properity#则导入log4j 依赖就行filters: stat,wall,log4jmaxPoolPreparedStatementPerConnectionSize: 20useGlobalDataSourceStat: trueconnectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

application.properties

mybatis.type-aliases-package=com.liang.pojo
mybatis.mapper-locations=classpath:mapper/*.xml

在这里插入图片描述

ok!连接数据库完成

写个text类测试一下,不然写代码太多起不来,找错范围太大

package com.liang;import com.liang.service.UserServiceImpl;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;@SpringBootTest
class ShiroSpringbootApplicationTests {@Autowiredprivate   UserServiceImpl userService;@Testvoid contextLoads() {System.out.println(userService.queryUserByName("sbsbsb"));}}

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创建一个pojo User实体类

package com.liang.pojo;import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@AllArgsConstructor
@NoArgsConstructor
public class User {private int id;private String name;private String pwd;
}

mapper UserMapper接口

package com.liang.mapper;import com.liang.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;@Repository
@Mapper
public interface UserMapper {public User queryUserByName(String name);}

在resources下建一个mapper UserMapper.xml写sql语句

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.liang.mapper.UserMapper"><select id="queryUserByName" parameterType="String" resultType="User">select * from mybatis.user where name =#{name}</select></mapper>

service UserService接口

package com.liang.service;import com.liang.pojo.User;public interface UserService {public User queryUserByName(String name);
}

UserServiceImpl实现类

package com.liang.service;import com.liang.mapper.UserMapper;
import com.liang.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper;@Overridepublic User queryUserByName(String name) {return userMapper.queryUserByName(name);}
}

UserRealm

package com.liang.config;import com.liang.pojo.User;
import com.liang.service.UserService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;//自定义的UserRealm   extends AuthorizingRealm
public class UserRealm  extends AuthorizingRealm {@AutowiredUserService userService;//授权@Overrideprotected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {System.out.println("执行了=》授权doGetAuthorizationInfo");return null;}//认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {System.out.println("执行了=》认证doGetAuthenticationInfo");//用户名,密码  数据库中取
//        String username="liang";
//        String password="123321";UsernamePasswordToken userToken = (UsernamePasswordToken) token;//连接真实数据库User user = userService.queryUserByName(userToken.getUsername());//会返回一个user对象    这里没有获取到值  记得看这里if (user==null){//没有这个人,登录失败return null;//UnknownAccountException}//密码认证,shiro做return new SimpleAuthenticationInfo("",user.getPwd(),"");}
}

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shiro请求授权实现

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ShiroConfig

package com.liang.config;import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.util.LinkedHashMap;
import java.util.Map;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier( "securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);//添加shiro的内置过滤器/*anon:无需认证就可以访问authc:必须认证才能访问user:必须拥有  记住我 功能才能用perms: 拥有对某个资源的权限才能访问role: 拥有某个角色权限才能访问*///登录拦截Map<String,String> filterMap = new LinkedHashMap<>();
//        filterMap.put("/user/add","authc");
//        filterMap.put("/user/update","authc");//授权,正常的情况下,没有授权会跳到未授权页面filterMap.put("/user/add","perms[user:add]");filterMap.put("/user/update","perms[user:update]");filterMap.put("/user/*", "authc");bean.setFilterChainDefinitionMap(filterMap);//设置登录页面bean.setLoginUrl("/toLogin");//未授权页面bean.setUnauthorizedUrl("/unauth");return bean;}//DefaultWebSecurityManager@Bean(name = "securityManager")public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();//关联UserRealmsecurityManager.setRealm(userRealm);return securityManager;
}//创建realm 对象,需要自定义类 :第一步@Beanpublic UserRealm userRealm(){return new UserRealm();}
}

UserRealm

package com.liang.config;import com.liang.pojo.User;
import com.liang.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;//自定义的UserRealm   extends AuthorizingRealm
public class UserRealm  extends AuthorizingRealm {@AutowiredUserService userService;//授权@Overrideprotected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {System.out.println("执行了=》授权doGetAuthorizationInfo");
//SimpleAuthorizationInfoSimpleAuthorizationInfo info = new SimpleAuthorizationInfo();info.addStringPermission("user:add");//拿到当前登录的这个对象Subject subject = SecurityUtils.getSubject();User currentUser = (User) subject.getPrincipal();//拿到user对象//设置当前用户的权限info.addStringPermission(currentUser.getPerms());//return inforeturn info;}//认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {System.out.println("执行了=》认证doGetAuthenticationInfo");//用户名,密码  数据库中取
//        String username="liang";
//        String password="123321";UsernamePasswordToken userToken = (UsernamePasswordToken) token;//连接真实数据库User user = userService.queryUserByName(userToken.getUsername());//会返回一个user对象    这里没有获取到值  记得看这里if (user==null){//没有这个人,登录失败return null;//UnknownAccountException}//密码认证,shiro做return new SimpleAuthenticationInfo(user,user.getPwd(),"");}
}

MyController

 @RequestMapping("/unauth")@ResponseBodypublic String unauthorized(){
return "未经授权,无法访问此页面 404!";}

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shiro整合thymeleaf

导入shiro-thymeleaf整合依赖

  <!--shiro-thymeleaf整合--><dependency><groupId>com.github.theborakompanioni</groupId><artifactId>thymeleaf-extras-shiro</artifactId><version>2.0.0</version></dependency>

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ShiroConfig

package com.liang.config;import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.RequestMapping;import java.util.LinkedHashMap;
import java.util.Map;@Configuration
public class ShiroConfig {//ShiroFilterFactoryBean@Beanpublic ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier( "securityManager") DefaultWebSecurityManager defaultWebSecurityManager){ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean();//设置安全管理器bean.setSecurityManager(defaultWebSecurityManager);//添加shiro的内置过滤器/*anon:无需认证就可以访问authc:必须认证才能访问user:必须拥有  记住我 功能才能用perms: 拥有对某个资源的权限才能访问role: 拥有某个角色权限才能访问*///登录拦截Map<String,String> filterMap = new LinkedHashMap<>();
//        filterMap.put("/user/add","authc");
//        filterMap.put("/user/update","authc");//授权,正常的情况下,没有授权会跳到未授权页面filterMap.put("/user/add","perms[user:add]");filterMap.put("/user/update","perms[user:update]");filterMap.put("/user/*", "authc");bean.setFilterChainDefinitionMap(filterMap);//设置登录页面bean.setLoginUrl("/toLogin");//未授权页面bean.setUnauthorizedUrl("/unauth");return bean;}//DefaultWebSecurityManager@Bean(name = "securityManager")public DefaultWebSecurityManager defaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm){DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();//关联UserRealmsecurityManager.setRealm(userRealm);return securityManager;
}//创建realm 对象,需要自定义类 :第一步@Beanpublic UserRealm userRealm(){return new UserRealm();}//整合shiroDialect: 用来整合shiro thymeleaf@Beanpublic ShiroDialect getShiroDialect(){return new ShiroDialect();}
}

UserRealm

package com.liang.config;import com.liang.pojo.User;
import com.liang.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;//自定义的UserRealm   extends AuthorizingRealm
public class UserRealm  extends AuthorizingRealm {@AutowiredUserService userService;//授权@Overrideprotected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {System.out.println("执行了=》授权doGetAuthorizationInfo");
//SimpleAuthorizationInfoSimpleAuthorizationInfo info = new SimpleAuthorizationInfo();info.addStringPermission("user:add");//拿到当前登录的这个对象Subject subject = SecurityUtils.getSubject();User currentUser = (User) subject.getPrincipal();//拿到user对象//设置当前用户的权限info.addStringPermission(currentUser.getPerms());//return inforeturn info;}//认证@Overrideprotected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {System.out.println("执行了=》认证doGetAuthenticationInfo");//用户名,密码  数据库中取
//        String username="liang";
//        String password="123321";UsernamePasswordToken userToken = (UsernamePasswordToken) token;//连接真实数据库User user = userService.queryUserByName(userToken.getUsername());//会返回一个user对象    这里没有获取到值  记得看这里if (user==null){//没有这个人,登录失败return null;//UnknownAccountException}Subject  currentSubject= SecurityUtils.getSubject();Session session = currentSubject.getSession();session.setAttribute("loginUser", user);//密码认证,shiro做return new SimpleAuthenticationInfo(user,user.getPwd(),"");}
}

MyController

package com.liang.controller;import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import sun.text.normalizer.NormalizerBase;import java.util.Map;@Controller
public class MyController {@RequestMapping({"/","index"})public String toIndex(Model model){model.addAttribute("msg","hello,shiro");return "index";}@RequestMapping("/user/add")public String add(){return "user/add";}@RequestMapping("/user/update")public String update(){return "user/update";}@RequestMapping("/toLogin")public String toLogin(){return "login";}@RequestMapping("login")public String login(String username,String password,Model model){//获取当前的用户Subject subject = SecurityUtils.getSubject();//封装用户的登录数据UsernamePasswordToken token = new UsernamePasswordToken(username, password);try{subject.login(token);//执行登录的方法,如果没有异常就说明ok了return "index";}catch (UnknownAccountException uae){//用户名不存在model.addAttribute("msg","用户名错误");return "login";}catch (IncorrectCredentialsException ice){//密码不存在model.addAttribute("msg","密码错误");return "login";}}@RequestMapping("/unauth")@ResponseBodypublic String unauthorized(){
return "未经授权,无法访问此页面 404!";}
}

index.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org"xmlns:shiro="http://www.thymeleaf.org/thymeleaf-extras-shiro">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<h1>首页</h1>
<!--从session中判断值!-->
<div th:if="${session.loginuser==null}"><a th:href="@{/toLogin}">登录</a>
</div><p th:text="${msg}"></p>
<hr><div shiro:hasPermission="user:add"><a th:href="@{/user/add}">add</a>
</div><div shiro:hasPermission="user:update"><a th:href="@{/user/update}">update</a>
</div>
</body>
</html>

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开源模板分析

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java自带的md5加密不安全,可以百度破解

账号:admin 密码:123456

导入别人项目首先要记得的几个点

  • 数据库账号密码,记得改成自己的
  • 注意端口
  • layUI可以下载模板练手
  • 模板之家,可以下载后台模板

Swagger

学习目标:

  • 了解swagger的作用和概念
  • 了解前后端分离
  • 在springboot中集成swagger
swagger简介

前后端分离

vue+springboot

后端时代:前端只管理静态页面;html==>后端 模板引擎 jsp ==>后端是主力

前后端分离式时代:

  • 后端:后端控制器,服务层,数据访问层

  • 前端:前端控制层,视图层

    • 伪造后端数据json。已经存在了,不需要后端,前端工程依旧能够跑起来
  • 前后端如何交互?==》api

  • 前后端相对独立,松耦合

  • 前后端甚至可以部署在不同的服务器上

产生一个问题:

  • 前后端集成联调,前端人员和后端人员无法做到“即使协商,今早解决问题”,最终导致问题爆发

    解决方案:

    • 首先指定schema【计划的提纲】,实时更新最新的api,降低集成的风险
    • 早些年:指定world文档
    • 前后端分离:
      • 前端测试后端接口:postman
      • 后端提供接口,需求实时更新最新的消息改动!
Swagger
  • 号称世界上最流行的api框架
  • RestFul api 文档在线自动生成工具=》api 文档与api定义同步更新
  • 直接运行,可以在线测试api接口
  • 支持多种语言:(java,php…)

官网:https://swagger.io/

在项目中使用swagger需要springfox;

  • swagger2
  • ui
springboot集成swagger

1.新建一个springboot=web项目
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2.导入相关依赖

<!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
<dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger2</artifactId><version>2.9.2</version>
</dependency><!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger-ui -->
<dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger-ui</artifactId><version>2.9.2</version>
</dependency>

3.编写一个hello工程

4.配置swagge==>config

package com.liang.swagger.config;import org.springframework.context.annotation.Configuration;
import springfox.documentation.swagger2.annotations.EnableSwagger2;@Configuration
@EnableSwagger2    //开启swagger2
public class SwaggerConfig {
}

5.测试运行

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配置swagger

swagger的bean实例Docket

写一个config SwaggerConfig配置类

package com.liang.swagger.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;import java.util.ArrayList;@Configuration
@EnableSwagger2    //开启swagger2
public class SwaggerConfig {@Beanpublic Docket docket(){return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo());}//配置swagger信息  = apiinfoprivate ApiInfo apiInfo(){//作者信息Contact contact = new Contact("梁伟浩", "http://blog.kuangstudy.com/", "1814356884@qq.com");return new ApiInfo("梁伟浩的swagger api文档","现在开始永远不会太晚","v1.0","http://blog.kuangstudy.com/",contact , "Apache 2.0","http://www.apache.org/licenses/LICENSE-2.0",new ArrayList());}
}

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配置扫描接口以及开关
  1. Docket.select()
配置扫描的接口
package com.liang.swagger.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;import java.util.ArrayList;@Configuration
@EnableSwagger2    //开启swagger2
public class SwaggerConfig {@Beanpublic Docket docket(){return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).select()// basePackage:指定要扫描的包//any():扫描全部//none():不扫描//withClassAnnotation:扫描类上的注解.apis(RequestHandlerSelectors.basePackage("com.liang.swagger.controller") )//配置这个后,只能访问这包下面的controller了//paths():过滤什么路径//  .paths(PathSelectors.ant("/liang/**")) //全部过滤掉就访问扫描不到东西了.build(); //build 工厂模式}//配置swagger信息  = apiinfoprivate ApiInfo apiInfo(){//作者信息Contact contact = new Contact("梁伟浩", "http://blog.kuangstudy.com/", "1814356884@qq.com");return new ApiInfo("梁伟浩的swagger api文档","现在开始永远不会太晚","v1.0","http://blog.kuangstudy.com/",contact , "Apache 2.0","http://www.apache.org/licenses/LICENSE-2.0",new ArrayList());}
}

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配置是否启动swagger
 return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).enable(false)//enable 是否启动swagger,如果为false,则swagger不能再服务器中访问.select()//select和build是一套,不能在其中间做其他没有的属性方法// basePackage:指定要扫描的包//any():扫描全部//none():不扫描//withClassAnnotation:扫描类上的注解.apis(RequestHandlerSelectors.basePackage("com.liang.swagger.controller") )//配置这个后,只能访问这包下面的controller了//paths():过滤什么路径//  .paths(PathSelectors.ant("/liang/**")).build(); //build 工厂模式}

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我只希望我的swagger在生产环境中使用,在发布的时候不使用?

  • 判断是不是生产环境 flag=false
  • 注入enable(flag)

SwaggerConfig

package com.liang.swagger.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.env.Profiles;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;import java.util.ArrayList;@Configuration
@EnableSwagger2    //开启swagger2
public class SwaggerConfig {@Beanpublic Docket docket(Environment environment){//设置要显示的swagger环境Profiles profiles = Profiles.of("dev","text");//获取项目的环境//通过environment.acceptsProfiles判断自己是否处在自己设定的环境当中boolean flag = environment.acceptsProfiles(profiles);return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).enable(flag) //enable 是否启动swagger,如果为false,则swagger不能再服务器中访问.select()//select和build是一套,不能在其中间做其他没有的属性方法// basePackage:指定要扫描的包//any():扫描全部//none():不扫描//withClassAnnotation:扫描类上的注解.apis(RequestHandlerSelectors.basePackage("com.liang.swagger.controller") )//配置这个后,只能访问这包下面的controller了//paths():过滤什么路径//  .paths(PathSelectors.ant("/liang/**")).build(); //build 工厂模式}//配置swagger信息  = apiinfoprivate ApiInfo apiInfo(){//作者信息Contact contact = new Contact("梁伟浩", "http://blog.kuangstudy.com/", "1814356884@qq.com");return new ApiInfo("梁伟浩的swagger api文档","现在开始永远不会太晚","v1.0","http://blog.kuangstudy.com/",contact , "Apache 2.0","http://www.apache.org/licenses/LICENSE-2.0",new ArrayList());}
}

然后模拟不同生产环境建立一个dev生产环境和pro上线运行环境配置文件,如果检验到生产环境就true可以访问,上线pro检验不到就是false无法访问,默认的环境是8080

application.properties

spring.profiles.active=pro

application-dev.properties

server.port=8080

application-pro.properties

server.port=8082
配置API文档的分组

1.groupName(“lwh”)

如何配置多个分组;

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配置多个分组

    @Beanpublic Docket docket1(){return new Docket(DocumentationType.SWAGGER_2).groupName("a");}@Beanpublic Docket docket2(){return new Docket(DocumentationType.SWAGGER_2).groupName("b");}@Beanpublic Docket docket3(){return new Docket(DocumentationType.SWAGGER_2).groupName("c");}

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实体类配置;
package com.liang.swagger.pojo;import io.swagger.annotations.Api;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;//@Api(注释)
@ApiModel("用户实体类") //描述生成注释
public class User {@ApiModelProperty("用户名")public  String username;@ApiModelProperty("密码")public  String password;
}

controller

package com.liang.swagger.controller;import com.liang.swagger.pojo.User;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController  //没有页面返回一个字符串
public class HelloController {
//error@GetMapping (value = "/hello")public String hello(){return "hello";}//只有我们接口中,返回值中存在实体类。,它就会被扫描到swagger中@PostMapping(value = "/user")public User user(){return new User();}//Operation接口,不是放在类上的@ApiOperation("hello控制类")@GetMapping(value = "/hello2")public String hello2(@ApiParam("用户名") String username){return "hello"+username;}@ApiOperation("post控制类")@GetMapping(value = "/post")public User post(@ApiParam("用户名") User user){int i =5/0;return user;}}

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@ApiOperation("post控制类")
@GetMapping(value = "/post")
public User post(@ApiParam("用户名") User user){  return user;
}
上面返回值是User你下面才能返回一个user对象

测试功能

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swagger总结:

  1. 我们可以通过给swagger给一些难以理解的属性或者接口,增加注解信息
  2. 接口文档实时更新
  3. 可以在线测试

Swagger是一个优秀的工具,几乎所有大公司都有使用它

【注意点】 在正式发布的时候,关闭swagger!!!出于安全考虑,而且节省运行的内存

任务

异步任务

AsyncService

package com.liang.service;import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;import java.sql.SQLOutput;@Service
public class AsyncService {//告诉spring这是一个异步方法
@Asyncpublic void hello() throws InterruptedException {Thread.sleep(3000);System.out.println("数据正在处理");}}

AsyncController

package com.liang.controller;import com.liang.service.AsyncService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
public class AsyncController {@AutowiredAsyncService asyncService;@RequestMapping("/hello")public String hello() throws InterruptedException {asyncService.hello();;//停止三秒return "ok!!!";}}

Springboot09TextApplication

package com.liang;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableAsync;@EnableAsync//开启异步注解功能
@SpringBootApplication
public class Springboot09TextApplication {public static void main(String[] args) {SpringApplication.run(Springboot09TextApplication.class, args);}}

开启异步任务后,客户端会首先获取到数据,而后台在运行sleep三秒后才出来的数据

邮件任务

导入依赖

 <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>

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编写配置application.properties文件

spring.mail.username=1814356884@qq.com
spring.mail.password=yjeapxevwxegehea
spring.mail.host=smtp.qq.com#开启加密验证
spring.mail.properties.mail.smtp.enable=true

编写测试类

package com.liang;import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;@SpringBootTest
class Springboot09TextApplicationTests {@AutowiredJavaMailSenderImpl mailSender;@Testvoid contextLoads() {SimpleMailMessage mailMessage = new SimpleMailMessage();mailMessage.setSubject("早上好呀,梁伟浩");mailMessage.setText("加油 努力 奋斗");mailMessage.setTo("1814356884@qq.com");mailMessage.setFrom("1814356884@qq.com");mailSender.send(mailMessage);}@Testvoid contextLoads2() throws MessagingException {//一个复杂的邮件MimeMessage mimeMessage = mailSender.createMimeMessage();//组装MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);//正文helper.setSubject("梁伟浩你好呀 plus版");helper.setText("<p style='color:red'>加油  啊啊啊啊</p>",true);//附件helper.addAttachment("1.jpg",new File("C:\\Users\\Administrator\\Desktop\\1.jpg"));helper.addAttachment("2.jpg",new File("C:\\Users\\Administrator\\Desktop\\1.jpg"));helper.setTo("1814356884@qq.com");helper.setFrom("1814356884@qq.com");mailSender.send(mimeMessage);}}

邮件测试成功

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/**加回车键

封装源码

  /**** @param html* @param subject* @param text* @throws MessagingException* @Author:liangwh*/public void sendMail(Boolean html,String subject,String text) throws MessagingException {//一个复杂的邮件MimeMessage mimeMessage = mailSender.createMimeMessage();//组装MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true);//是否支持多文本上传//正文helper.setSubject(subject);helper.setText(text,true);//附件helper.addAttachment("1.jpg",new File("C:\\Users\\Administrator\\Desktop\\1.jpg"));helper.addAttachment("2.jpg",new File("C:\\Users\\Administrator\\Desktop\\1.jpg"));helper.setTo("1814356884@qq.com");helper.setFrom("1814356884@qq.com");mailSender.send(mimeMessage);}

定时任务

  • TaskSchedluder 任务调度者

  • TaskExecutor 任务执行者

  • @EnableScheduling //开启定时功能的注解,在主启动程序加

  • @scheduled 什么时候执行

  • Cron 表达式

    每天在这个时间点都会执行这个方法

    package com.liang.service;import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Service;@Service
    public class ScheduledService {//在一个特定的时间执行这个方法  timer//cron  表达式/*@Scheduled(cron = "0 * * * * 0-7") 秒 分 时 日 月 周几每天 0代表秒 36代表分 8代表时 执行一次30 0/5 10,18 **? 每天十点和18点,每隔五分钟执行一次0 15 10?* 1-6 每个月的周一到周六,10.15分钟执行一次@Scheduled(cron = "0/2 * * * * ?") 每两秒钟执行一次*/@Scheduled(cron = "0 36 8 * * ?")public void hello(){System.out.println("hello,你被执行了");}
    }

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分布式系统理论

分布式 Dubbo+zookeeper+springboot

什么是分布式系统?
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Dubbo概念

什么是dubbo?

Apache Dubbo 是一款高性能、轻量级的开源Java RPC框架,他提供了三大核心能力:面向接口的远程调用,智能容错和负载均衡,以及服务自动注册和发现。

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下载zookeeper的地址链接: http://archive.apache.org/dist/zookeeper/

Dubbo文档

本文介绍了网站应用的演进

随着互联网的发展,网站应用的规模不断扩大,常规的垂直应用架构已无法应对,分布式服务架构以及流动计算架构势在必行,亟需一个治理系统确保架构有条不紊的演进。
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单一应用架构

当网站流量很小时,只需一个应用,将所有功能都部署在一起,以减少部署节点和成本。此时,用于简化增删改查工作量的数据访问框架(ORM)是关键

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适用于小型网站,小型管理系统,将所有功能都部署到一个功能里面,简单易用

缺点:

  • 性能扩展比较难
  • 协同开发问题
  • 不利于升级维护
垂直应用架构

当访问量逐渐增大,单一应用增加机器带来的加速度越来越小,提升效率的方法之一是将应用拆成互不相干的几个应用,以提升效率。此时,用于加速前端页面开发的Web框架(MVC)是关键
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通过切分业务来实现各个模块独立部署,降低了维护和部署的难度,团队各司其职更易管理,性能扩展也更方便,更有针对性

缺点: 公共模块无法重复利用,开发性能的浪费

分布式服务架

当垂直应用越来越多,应用之间交互不可避免,将核心业务抽取出来,作为独立的服务,逐渐形成稳定的服务中心,使前端应用能更快速的响应多变的市场需求。此时,用于提高业务复用及整合的分布式服务框架(RPC)是关键

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流动计算架构

当服务越来越多,容量的评估,小服务资源的浪费等问题逐渐显现,此时需增加一个调度中心基于访问压力实时管理集群容量,提高集群利用率。此时,用于提高机器利用率的资源调度和治理中心(SOA)是关键。
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RPC

什么是rpc?

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RPC的两个核心模块:通讯,序列化

序列化:数据传输需要转化

Dubbo以及zookeeper安装

首先去下载一个zookeeper压缩包

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Windows下载安装dubbo-admin

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地址:https://github.com/apache/dubbo-admin/tree/master

在下载的目录下打包dubbo-admin:mvn clean package -Dmaven.text.skip=true

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访问7001,账号密码都是root
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服务注册发现实战

直接建一个空项目

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再建一个模块 ,模块化开发
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记得把端号改了 不然就端口占用了

通过百度查找maven,可以找到所以你要的依赖

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导入依赖

     <!--导入依赖 dubbo和zookeeper--><!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>2.7.3</version></dependency>
<!--zkclient--><!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient --><dependency><groupId>com.github.sgroschupf</groupId><artifactId>zkclient</artifactId><version>0.1</version></dependency>
  <!--日志会冲突--><!-- 引入zookeeper --><dependency><groupId>org.apache.curator</groupId><artifactId>curator-framework</artifactId><version>2.12.0</version></dependency><dependency><groupId>org.apache.curator</groupId><artifactId>curator-recipes</artifactId><version>2.12.0</version></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.4.14</version><!--排除这个slf4j-log4j12--><exclusions><exclusion><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId></exclusion></exclusions></dependency>

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首先启动zookeeper服务器

再启动打包好的dubbo-admin包,然后访问监控localhost:7001

步骤:

前提:zookeeper服务已开始!

  1. 提供者提供服务

    • 导入依赖

       <!--导入依赖 dubbo和zookeeper--><!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>2.7.3</version></dependency>
      <!--zkclient--><!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient --><dependency><groupId>com.github.sgroschupf</groupId><artifactId>zkclient</artifactId><version>0.1</version></dependency><!--日志会冲突--><!-- 引入zookeeper --><dependency><groupId>org.apache.curator</groupId><artifactId>curator-framework</artifactId><version>2.12.0</version></dependency><dependency><groupId>org.apache.curator</groupId><artifactId>curator-recipes</artifactId><version>2.12.0</version></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.4.14</version><!--排除这个slf4j-log4j12--><exclusions><exclusion><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId></exclusion></exclusions></dependency>
    • 配置注册中心的地址,以及服务发现名和要扫描的表

      TicketService

      package com.liang.service;public interface TicketService {public String getTicket();}

      TicketServiceImpl

      package com.liang.service;import org.apache.dubbo.config.annotation.Service;
      import org.springframework.stereotype.Component;//zookeeper:服务注册与发现@Service  //可以被扫描,在项目中启动就自动注册到注册中心
      @Component //使用dubbo后尽量不要使用@service
      public class TicketServiceImpl implements TicketService {@Overridepublic String getTicket() {return "《lwh真好》";}
      }

      application.properties

      # 应用名称
      spring.application.name=provider-server
      # 应用服务 WEB 访问端口
      server.port=8081
      # 服务应用名字
      dubbo.application.name=provider-server
      # 注册中心地址
      dubbo.registry.address=zookeeper://127.0.0.1:2181
      # 那些服务要被注册
      dubbo.scan.base-packages=com.liang.
      
    • 在想要注册的服务上面 加一个注解@service dubbo包下的

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2. 消费者如何消费

  • 导入依赖

  • 配置注册中心的地址,配置自己的服务名

    TicketService

    package com.liang.service;public interface TicketService {public String getTicket();}

    UserService

    package com.liang.service;import org.apache.dubbo.config.annotation.Reference;
    import org.springframework.stereotype.Service;@Service  //放到容器中,这个就不是dubbo的包了 
    public class UserService {//想拿到provider生产的票,需要去注册中心拿到服务@Reference  //引用,pom坐标,可以定义路径相同的接口名TicketService ticketService;public void buyTicket(){String ticket = ticketService.getTicket();System.out.println("在注册中心拿到的ticket==》"+ticket);}
    }

    text测试类,看是否拿到注册中心的值

    ConsumerServerApplicationTests

    package com.liang;import com.liang.service.UserService;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;@SpringBootTest
    class ConsumerServerApplicationTests {@AutowiredUserService userService;@Testvoid contextLoads() {userService.buyTicket();}}
  • 从远程注入服务 @Reference

成功获取拿到注册中心的值

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大展望和回顾

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人 永远不要停下学习的脚步!

总结:

  1. 记得啊 反正程序哪个环节问题 第一时间检查这个环节 就比如我刚刚那个userToken.getUsername()取值的,但是我加了双引号“userToken.getUsername()”,导致取不到值,获取不到数据库的数据,登录不上去
  2. 有时候出问题报yml配置文件
    错误,删掉yml重新建个复制黏贴可能可以喔
  • service调dao层
  • layUI可以下载模板练手
  • 模板之家,可以下载后台模板
  • 注意在创建module目录,不要重复文件夹路径

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