1：Redis安装

面向度娘，网上一大堆教程，自己去找找安装一下

2：定义接口

package com.nice.util.redis;import java.util.List;
public interface JedisClient {String set(String key, String value);String get(String key);Boolean exists(String key);Long expire(String key, int seconds);Long ttl(String key);Long incr(String key);Long hset(String key, String field, String value);String hget(String key, String field);Long hdel(String key, String field);Boolean hexists(String key, String field);List<String> hvals(String key);Long del(String key);
}

3：实现接口

package com.nice.util.redis;
import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
@Service
public class JedisClientPool implements JedisClient {@Autowiredprivate JedisPool jedisPool;public JedisPool getJedisPool() {return jedisPool;}public void setJedisPool(JedisPool jedisPool) {this.jedisPool = jedisPool;}@Overridepublic String set(String key, String value) {Jedis jedis = jedisPool.getResource();String result = jedis.set(key, value);jedis.close();return result;}@Overridepublic String get(String key) {Jedis jedis = jedisPool.getResource();String result = jedis.get(key);jedis.close();return result;}@Overridepublic Boolean exists(String key) {Jedis jedis = jedisPool.getResource();Boolean result = jedis.exists(key);jedis.close();return result;}@Overridepublic Long expire(String key, int seconds) {Jedis jedis = jedisPool.getResource();Long result = jedis.expire(key, seconds);jedis.close();return result;}@Overridepublic Long ttl(String key) {Jedis jedis = jedisPool.getResource();Long result = jedis.ttl(key);jedis.close();return result;}@Overridepublic Long incr(String key) {Jedis jedis = jedisPool.getResource();Long result = jedis.incr(key);jedis.close();return result;}@Overridepublic Long hset(String key, String field, String value) {Jedis jedis = jedisPool.getResource();Long result = jedis.hset(key, field, value);jedis.close();return result;}@Overridepublic String hget(String key, String field) {Jedis jedis = jedisPool.getResource();String result = jedis.hget(key, field);jedis.close();return result;}@Overridepublic Long hdel(String key, String field) {Jedis jedis = jedisPool.getResource();Long result = jedis.hdel(key, field);jedis.close();return result;}@Overridepublic Boolean hexists(String key, String field) {Jedis jedis = jedisPool.getResource();Boolean result = jedis.hexists(key, field);jedis.close();return result;}@Overridepublic List<String> hvals(String key) {Jedis jedis = jedisPool.getResource();List<String> result = jedis.hvals(key);jedis.close();return result;}@Overridepublic Long del(String key) {Jedis jedis = jedisPool.getResource();Long result = jedis.del(key);jedis.close();return result;}
}

4：配置Redis

我是直接配置到spring.xml里面的

<!-- 连接redis单机版--><bean id="jedisClientPool" class="com.nice.util.redis.JedisClientPool"><property name="jedisPool" ref="jedisPool"></property></bean><bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"><!-- 最大连接数 --><property name="maxTotal" value="30" /><!-- 最大空闲连接数 --><property name="maxIdle" value="10" /><!-- 每次释放连接的最大数目 --><property name="numTestsPerEvictionRun" value="1024" /><!-- 释放连接的扫描间隔（毫秒） --><property name="timeBetweenEvictionRunsMillis" value="30000" /><!-- 连接最小空闲时间 --><property name="minEvictableIdleTimeMillis" value="1800000" /><!-- 连接空闲多久后释放, 当空闲时间>该值 且 空闲连接>最大空闲连接数 时直接释放 --><property name="softMinEvictableIdleTimeMillis" value="10000" /><!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 --><property name="maxWaitMillis" value="1500" /><!-- 在获取连接的时候检查有效性, 默认false --><property name="testOnBorrow" value="true" /><!-- 在空闲时检查有效性, 默认false --><property name="testWhileIdle" value="true" /><!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true --><property name="blockWhenExhausted" value="false" /></bean><!-- redis单机 通过连接池 --><bean id="jedisPool" class="redis.clients.jedis.JedisPool" destroy-method="close"><constructor-arg name="poolConfig" ref="jedisPoolConfig"/><constructor-arg name="host" value="192.168.10.183"/><constructor-arg name="port" value="6379"/><constructor-arg name="timeout" value="3000"></constructor-arg><constructor-arg name="password" value="123456"></constructor-arg><constructor-arg name="database" value="10"></constructor-arg></bean>

5：业务逻辑层实现存入数据到Redis和从Redis中取数据

 			 //hexists方法是判断Redis数据库内是否存在对应的数据if(jedisClient.hexists("list","list")){List<VfsuDeviceInfo>list = JsonUtil1.toList(jedisClient.hget("list","list"),VfsuDeviceInfo.class);System.out.print("从redis缓存中取数据");rd.setData(list);rd.setMsg("请求成功");return rd;}else{System.out.print("从Mysql中取数据");meterList = fsuMapper.queryData(map);jedisClient.hset("list","list", JsonUtil1.obj2StringPretty(meterList));rd.setData(meterList);rd.setMsg("请求成功");return rd;}

6：设置Redis过期时间

 //30s后这个值就过期jedisClient.expire(meterList.get(i).getFsuid(),30);