# springboot-test-redis **Repository Path**: Successly/springboot-test-redis ## Basic Information - **Project Name**: springboot-test-redis - **Description**: springboot 整合 redis 并 实现 发布订阅、分布式锁、实战redis等功能 - **Primary Language**: Java - **License**: MIT - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 4 - **Created**: 2022-03-11 - **Last Updated**: 2022-03-11 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # springboot-test-redis [toc] 项目类型:springboot+redis单数据源 主要功能: - 1、提供redis工具类 - 2、redis存储测试 - 3、redis消息发布和监听 - 4、redis接口缓存返回数据 - 5、集成swagger2-api测试接口 工具类和redis存储测试已经在项目实战中讲了, springboot+redis项目实战完整篇 参考地址: https://www.jianshu.com/p/5596c3a4978d ### 3、redis消息发布和监听 发送消息 ```java package com.dist.controller; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import io.swagger.annotations.ApiParam; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; 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.RestController; import javax.annotation.Resource; /** * @author zhengja@dist.com.cn * @data 2019/6/11 14:05 */ @Api(tags = {"RedisSendMessageController"}, description = "redis发布测试") @RestController @RequestMapping(value = "rest/redis") public class RedisSendMessageController { //传string会出现乱码 @Resource private RedisTemplate redisTemplate; //解决string乱码问题 @Resource private StringRedisTemplate stringRedisTemplate; @ApiOperation(value = "redis-发布", notes = "redis-发布") @RequestMapping(value = "send/message", method = RequestMethod.GET) public void testPush(@ApiParam(value = "发布的消息内容", required = true) @RequestParam("body") String body){ /** * 使用redisTemplate的convertAndSend()函数, * String channel, Object message * channel代表管道, * message代表发送的信息 */ System.out.println("body==="+body); stringRedisTemplate.convertAndSend("topic1", body); } } ``` 监听器:接收消息 ```java package com.dist.listener; import org.springframework.data.redis.connection.Message; import org.springframework.data.redis.connection.MessageListener; import org.springframework.stereotype.Component; import java.io.UnsupportedEncodingException; /** * redis订阅方:接收消息 * * 为了接收 Redis 渠道发送过来的消息,我们先定义一个消息监听器( MessageListener ) * @author zhengja@dist.com.cn * @data 2019/6/11 13:58 */ @Component public class MyRedisSubscribeListener implements MessageListener { /** * 这里的 onMessage 方法是得到消息后的处理方法, 其中 message 参数代表 Redis 发送过来的消息, * pattern是渠道名称,onMessage方法里打印 了它们的内容。这里因为标注了 @Component 注解,所以 * 在 Spring Boot 扫描后,会把它自动装配到 IoC 容器中 ,监听着对象RedisMessageListener会自动 * 将消息进行转换。 * @param message * @param bytes */ @Override public void onMessage(Message message, byte[] bytes) { //消息体 String body = null; try { //解决string乱码 body = new String(message.getBody(),"utf-8"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } //渠道名称 String topic = new String(bytes); System.out.println("消息体:"+body); System.out.println("渠道名称:"+topic); } } ``` ### 4、redis接口缓存返回数据 直接上代码,具体效果自己测试,将此项目下载可以测试 ```java package com.dist.service.impl; import com.dist.constants.RedisConstants; import com.dist.service.RedisMethodsCacheService; import org.springframework.cache.annotation.CacheConfig; import org.springframework.cache.annotation.CacheEvict; import org.springframework.cache.annotation.CachePut; import org.springframework.cache.annotation.Cacheable; import org.springframework.stereotype.Service; /** * @author ZhengJa * @description * @data 2019/11/13 */ @Service @CacheConfig(cacheNames = RedisConstants.EntityCacheKey.OPINION) public class RedisMethodsCacheServiceImpl implements RedisMethodsCacheService { //value:组, key:组员 //@Cacheable(value = "getData1value", key = "'getData1key:'+#id", unless = "#result==null") //@Cacheable(value = "getData1value",key = "'getData1key'") @Cacheable(key = "'getData1key'") @Override public String getData(){ return "redis缓存-无参:方法返回的数据"; } /** * 多个参数查询 key的写法 * @param page 参数1 * @param pageSize 参数2 * @return Object */ @Cacheable(key = "#page+'-'+#pageSize") public Object findAllUsers(int page,int pageSize) { int pageStart = (page-1)*pageSize; return null; } /** Cacheable : value-组, key-组员 * 新增接口:每次新增数据,要清空缓存组,保证缓存与数据库同步 * @param parameter * @return java.lang.String */ @Cacheable(key = "'rediskey:'+#p0") @Override public String saveData(String parameter){ return "redis-新增: "+parameter; } /** Cacheable : value-组, key-组员 * 查询接口:首次查询缓存中没有,再到数据库查询,将查询返回的结果保存到缓存中,下次请求在缓存中取数据 * @param parameter * @return java.lang.String */ //@Cacheable(value = "getData2value",key = "'getData2key:'+#parameter") @Cacheable(key = "'rediskey:'+#p0") //@Cacheable(key = "'rediskey:'+#p0",keyGenerator = "wiselyKeyGenerator") @Override public String getData(String parameter){ return "redis-查询: "+parameter; } /** * 更新接口:同时更新缓存库 * @param parameter * @return java.lang.String */ //@CachePut(key = "'rediskey:'+#p0") @CachePut(key = "'rediskey:'+#p0") @Override public String putData(String parameter){ return "redis-更新: "+parameter; } /** * 删除数据:同时删除缓存库中对应的 组 ,目的保证数据一致性 * @param parameter * @return java.lang.String */ //@CacheEvict(allEntries=true)// 清空组下的所有缓存 @CacheEvict(key = "'rediskey:'+#p0")// 清空组下的某个缓存 @Override public String deleteData(String parameter){ return "redis-删除某个缓存: "+parameter; } /** * 删除数据:同时删除缓存库中对应的 组 ,目的保证数据一致性 * @param parameter * @return java.lang.String */ // 清空组下的所有缓存,忽略key //@CacheEvict(value=RedisConstants.EntityCacheKey.OPINION, allEntries=true) @CacheEvict(allEntries=true) @Override public String deleteAllData(String parameter){ return "redis-清除组:"+RedisConstants.EntityCacheKey.OPINION; } } ```