【mall-learning】03-mall整合Redis实现缓存功能

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Redis的安装和启动

Redis是用C语言开发的一个高性能键值对数据库，可用于数据缓存，主要用于处理大量数据的高访问负载。

下载Redis,下载地址：https://github.com/MicrosoftArchive/redis/releases

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在当前地址栏输入cmd后，执行redis的启动命令：redis-server.exe redis.windows.conf

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整合Redis

添加项目依赖

在pom.xml中新增Redis相关依赖

<!--redis依赖配置-->
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

修改SpringBoot配置文件

在application.yml中添加Redis的配置及Redis中自定义key的配置。

在spring节点下添加Redis的配置

  redis:host: localhost # Redis服务器地址database: 0 # Redis数据库索引（默认为0）port: 6379 # Redis服务器连接端口password: # Redis服务器连接密码（默认为空）jedis:pool:max-active: 8 # 连接池最大连接数（使用负值表示没有限制）max-wait: -1ms # 连接池最大阻塞等待时间（使用负值表示没有限制）max-idle: 8 # 连接池中的最大空闲连接min-idle: 0 # 连接池中的最小空闲连接timeout: 3000ms # 连接超时时间（毫秒）

在根节点下添加Redis自定义key的配置

# 自定义redis key
redis:key:prefix:authCode: "portal:authCode:"expire:authCode: 120 # 验证码超期时间

添加RedisService接口用于定义一些常用Redis操作

package com.macro.mall.tiny.service;/*** redis操作Service,* 对象和数组都以json形式进行存储* Created by macro on 2018/8/7.*/
public interface RedisService {/*** 存储数据*/void set(String key, String value);/*** 获取数据*/String get(String key);/*** 设置超期时间*/boolean expire(String key, long expire);/*** 删除数据*/void remove(String key);/*** 自增操作* @param delta 自增步长*/Long increment(String key, long delta);}

注入StringRedisTemplate，实现RedisService接口

package com.macro.mall.tiny.service.impl;import com.macro.mall.tiny.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;import java.util.concurrent.TimeUnit;/*** redis操作Service的实现类* Created by macro on 2018/8/7.*/
@Service
public class RedisServiceImpl implements RedisService {@Autowiredprivate StringRedisTemplate stringRedisTemplate;@Overridepublic void set(String key, String value) {stringRedisTemplate.opsForValue().set(key, value);}@Overridepublic String get(String key) {return stringRedisTemplate.opsForValue().get(key);}@Overridepublic boolean expire(String key, long expire) {return stringRedisTemplate.expire(key, expire, TimeUnit.SECONDS);}@Overridepublic void remove(String key) {stringRedisTemplate.delete(key);}@Overridepublic Long increment(String key, long delta) {return stringRedisTemplate.opsForValue().increment(key,delta);}
}

添加UmsMemberController

添加根据电话号码获取验证码的接口和校验验证码的接口

package com.macro.mall.tiny.controller;import com.macro.mall.tiny.common.api.CommonResult;
import com.macro.mall.tiny.service.UmsMemberService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;/*** 会员登录注册管理Controller* Created by macro on 2018/8/3.*/
@Controller
@Api(tags = "UmsMemberController", description = "会员登录注册管理")
@RequestMapping("/sso")
public class UmsMemberController {@Autowiredprivate UmsMemberService memberService;@ApiOperation("获取验证码")@RequestMapping(value = "/getAuthCode", method = RequestMethod.GET)@ResponseBodypublic CommonResult getAuthCode(@RequestParam String telephone) {return memberService.generateAuthCode(telephone);}@ApiOperation("判断验证码是否正确")@RequestMapping(value = "/verifyAuthCode", method = RequestMethod.POST)@ResponseBodypublic CommonResult updatePassword(@RequestParam String telephone,@RequestParam String authCode) {return memberService.verifyAuthCode(telephone,authCode);}
}

添加UmsMemberService接口

package com.macro.mall.tiny.service;import com.macro.mall.tiny.common.api.CommonResult;/*** 会员管理Service* Created by macro on 2018/8/3.*/
public interface UmsMemberService {/*** 生成验证码*/CommonResult generateAuthCode(String telephone);/*** 判断验证码和手机号码是否匹配*/CommonResult verifyAuthCode(String telephone, String authCode);}

添加UmsMemberService接口的实现类UmsMemberServiceImpl

生成验证码时，将自定义的Redis键值加上手机号生成一个Redis的key,以验证码为value存入到Redis中，并设置过期时间为自己配置的时间（这里为120s）。校验验证码时根据手机号码来获取Redis里面存储的验证码，并与传入的验证码进行比对。

package com.macro.mall.tiny.service.impl;import com.macro.mall.tiny.common.api.CommonResult;
import com.macro.mall.tiny.service.RedisService;
import com.macro.mall.tiny.service.UmsMemberService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;import java.util.Random;/*** 会员管理Service实现类* Created by macro on 2018/8/3.*/
@Service
public class UmsMemberServiceImpl implements UmsMemberService {@Autowiredprivate RedisService redisService;@Value("${redis.key.prefix.authCode}")private String REDIS_KEY_PREFIX_AUTH_CODE;@Value("${redis.key.expire.authCode}")private Long AUTH_CODE_EXPIRE_SECONDS;@Overridepublic CommonResult generateAuthCode(String telephone) {StringBuilder sb = new StringBuilder();Random random = new Random();for (int i = 0; i < 6; i++) {sb.append(random.nextInt(10));}//验证码绑定手机号并存储到redisredisService.set(REDIS_KEY_PREFIX_AUTH_CODE + telephone, sb.toString());redisService.expire(REDIS_KEY_PREFIX_AUTH_CODE + telephone, AUTH_CODE_EXPIRE_SECONDS);return CommonResult.success(sb.toString(), "获取验证码成功");}//对输入的验证码进行校验@Overridepublic CommonResult verifyAuthCode(String telephone, String authCode) {if (StringUtils.isEmpty(authCode)) {return CommonResult.failed("请输入验证码");}String realAuthCode = redisService.get(REDIS_KEY_PREFIX_AUTH_CODE + telephone);boolean result = authCode.equals(realAuthCode);if (result) {return CommonResult.success(null, "验证码校验成功");} else {return CommonResult.failed("验证码不正确");}}}