本文主要是介绍springBoot 读取properties文件,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
1.创建maven工程,在pom文件中添加依赖
1 <parent>2 <groupId>org.springframework.boot</groupId>3 <artifactId>spring-boot-starter-parent</artifactId>4 <version>1.5.9.RELEASE</version>5 </parent>6 7 <dependencies>8 <dependency>9 <groupId>org.springframework.boot</groupId> 10 <artifactId>spring-boot-starter-web</artifactId> 11 </dependency> 12 <!-- 单元测试使用 --> 13 <dependency> 14 <groupId>org.springframework.boot</groupId> 15 <artifactId>spring-boot-starter-test</artifactId> 16 </dependency> 17 18 <dependency> 19 <groupId>junit</groupId> 20 <artifactId>junit</artifactId> 21 <scope>test</scope> 22 </dependency> 23 24 </dependencies>
2.创建项目启动类 StartApplication.java
1 package com.kelly.controller;2 3 import org.springframework.boot.SpringApplication;4 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;5 import org.springframework.context.annotation.ComponentScan;6 import org.springframework.context.annotation.Configuration;7 8 @Configuration9 @EnableAutoConfiguration //自动加载配置信息 10 @ComponentScan("com.kelly")//使包路径下带有注解的类可以使用@Autowired自动注入 11 public class StartApplication { 12 public static void main(String[] args) { 13 SpringApplication.run(StartApplication.class, args); 14 } 15 }
3.编辑配置文件application.properties及自定义配置文件define.properties
application.properties
#访问的根路径 server.context-path=/springboot #端口号 server.port=8081 #session失效时间 server.session-timeout=30 #编码 server.tomcat.uri-encoding=utf-8test.name=kelly test.password=admin123
define.properties
defineTest.pname=test defineTest.password=test123
4.读取application.properties配置文件中的属性值
FirstController.java
1 package com.kelly.controller;2 3 import org.springframework.beans.factory.annotation.Value;4 import org.springframework.stereotype.Controller;5 import org.springframework.web.bind.annotation.RequestMapping;6 import org.springframework.web.bind.annotation.ResponseBody;7 8 9 @Controller 10 public class FirstController { 11 12 @Value("${test.name}") 13 private String name; 14 15 @Value("${test.password}") 16 private String password; 17 18 @RequestMapping("/") 19 @ResponseBody 20 String home() 21 { 22 return "Hello Springboot!"; 23 } 24 25 @RequestMapping("/hello") 26 @ResponseBody 27 String hello() 28 { 29 return "name: " + name + ", " + "password: " + password; 30 } 31 }
5.打开浏览器,输入 http://localhost:8081/springboot/hello 即可看到结果
6.使用java bean的方式读取自定义配置文件 define.properties
DefineEntity.java
1 package com.kelly.entity;2 3 import org.springframework.boot.context.properties.ConfigurationProperties;4 import org.springframework.context.annotation.PropertySource;5 import org.springframework.stereotype.Component;6 7 @Component8 @ConfigurationProperties(prefix="defineTest")9 @PropertySource("classpath:define.properties") 10 public class DefineEntity { 11 12 private String pname; 13 14 private String password; 15 16 public String getPname() { 17 return pname; 18 } 19 20 public void setPname(String pname) { 21 this.pname = pname; 22 } 23 24 public String getPassword() { 25 return password; 26 } 27 28 public void setPassword(String password) { 29 this.password = password; 30 } 31 32 33 }
SecondController.java
1 package com.kelly.controller;2 3 import org.springframework.beans.factory.annotation.Autowired;4 import org.springframework.stereotype.Controller;5 import org.springframework.web.bind.annotation.RequestMapping;6 import org.springframework.web.bind.annotation.ResponseBody;7 8 import com.kelly.entity.DefineEntity;9 10 @Controller 11 public class SecondController { 12 13 @Autowired 14 DefineEntity defineEntity; 15 16 @RequestMapping("/define") 17 @ResponseBody 18 String define() 19 { 20 return "test.name:" + defineEntity.getPname() + ", test.password:" + defineEntity.getPassword(); 21 } 22 }
7.打开浏览器,访问 http://localhost:8081/springboot/define,可以看到输出结果
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