spring 使用redis集群配置
上面两篇介绍了redis集群的配置合一些基本的概念,所以接下来当然是要在项目中使用咯,redis的java支持已经做的非常好了,所以我们来试着使用这些api来进行redis的操作,首先我们需要操作redis的架包:
<dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.7.3</version> </dependency>
我们需要做的仅仅是在spring配置文件中注入这些基本类,然后自己实现dao,下面是配置文件:
<context:property-placeholder ignore-unresolvable="true" location="classpath:yonyou.properties" /> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="1000"/> <property name="maxIdle" value="10"/> <property name="minIdle" value="1"/> <property name="maxWaitMillis" value="30000"/> <property name="testOnBorrow" value="true"/> <property name="testOnReturn" value="true"/> <property name="testWhileIdle" value="true"/> <!-- <property name="testWhileIdle" value="true"/> --> </bean> <bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool" destroy-method="destroy"> <constructor-arg ref="jedisPoolConfig"/> <constructor-arg>
<!--如果以后需要扩展集群,只需要复制一份redis,修改端口,然后在这里配置即可--> <list> <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg index="0" value="127.0.0.1"/> <constructor-arg index="1" value="6379"/> <constructor-arg index="2" value="instance:01"/> </bean> <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg index="0" value="127.0.0.1"/> <constructor-arg index="1" value="6380"/> <constructor-arg index="2" value="instance:02"/> </bean> <bean class="redis.clients.jedis.JedisShardInfo"> <constructor-arg index="0" value="127.0.0.1"/> <constructor-arg index="1" value="6381"/> <constructor-arg index="2" value="instance:03"/> </bean> </list> </constructor-arg> </bean> <!--java帮我们同步sentinel的信息,将主从信息同步到客户端来--> <bean class="redis.clients.jedis.JedisSentinelPool"> <constructor-arg index="0" value="mymaster"/> <constructor-arg index="1"> <set> <value>127.0.0.1:26379</value> </set> </constructor-arg> <constructor-arg index="2" ref="jedisPoolConfig"/> </bean>
上面配置好了以后,我们就相当于将redis集群给映射过来了,下来我们只需要做一些操作,涉及到数据的CRUD.
package com.yonyou.hotusm.module.nosql.redis; import redis.clients.jedis.ShardedJedis; //这个接口是操作sharedJedis public interface RedisDataSource { public abstract ShardedJedis getRedisClient(); public void returnResource(ShardedJedis shardedJedis); public void returnResource(ShardedJedis shardedJedis,boolean broken); }
实现:
package com.yonyou.hotusm.module.nosql.redis; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import redis.clients.jedis.ShardedJedis; import redis.clients.jedis.ShardedJedisPool; @Repository("redisDataSource") public class RedisDataSourceImpl implements RedisDataSource { private static final Logger log = LoggerFactory.getLogger(RedisDataSourceImpl.class); @Autowired private ShardedJedisPool shardedJedisPool; public ShardedJedis getRedisClient() { try { ShardedJedis shardJedis = shardedJedisPool.getResource(); return shardJedis; } catch (Exception e) { log.error("getRedisClent error", e); } return null; } public void returnResource(ShardedJedis shardedJedis) { shardedJedisPool.close(); //shardedJedisPool.returnResource(shardedJedis); } public void returnResource(ShardedJedis shardedJedis, boolean broken) { if (broken) { shardedJedisPool.close(); //shardedJedisPool.returnBrokenResource(shardedJedis); } else { shardedJedisPool.close(); //shardedJedisPool.returnResource(shardedJedis); } } }
下面就是操作jedis的具体类了:
@Repository("jedisTemplate") public class JedisTemplate { private static final Logger log = LoggerFactory.getLogger(JedisTemplate.class); @Autowired private RedisDataSource redisDataSource; public void disconnect() { ShardedJedis shardedJedis = redisDataSource.getRedisClient(); shardedJedis.disconnect(); } /** * 设置单个值 * * @param key * @param value * @return */ public String set(String key, String value) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.set(key, value); } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; } /** * 获取单个值 * * @param key * @return */ public String get(String key) { String result = null; ShardedJedis shardedJedis = redisDataSource.getRedisClient(); if (shardedJedis == null) { return result; } boolean broken = false; try { result = shardedJedis.get(key); } catch (Exception e) { log.error(e.getMessage(), e); broken = true; } finally { redisDataSource.returnResource(shardedJedis, broken); } return result; }
真正的还有很多操作,list,set,哈希什么的,我就不把代码贴出来了,看看api就知道了