这里简易封装了一下对redis缓存对象的管理，这个连接池只针对单独服务器，如果要使用集群的话这个就不适用了，需要使用ShardedJedisPool
Listshards = Arrays.asList( new JedisShardInfo("localhost",6379), new JedisShardInfo("localhost",6380)); ShardedJedisPool pool = new ShardedJedisPool(new JedisPoolConfig(), shards);
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package com.ctweb.util.redis;
import javax.annotation.PostConstruct;
import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import com.ctweb.util.ProcessCodeEnum;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
/**
*
* @author Dylan
* @date 2015年12月10日
*/
@Component
public class RedisClinet {
private static Logger log = LogManager.getLogger(RedisClinet.class);
@Value("${redis.host}")
private String host;
@Value("${redis.port}")
private String port;
@Value("${redis.auth}")
private String auth;
@Value("${redis.maxTotal}")
private int maxTotal;
@Value("${redis.maxIdle}")
private int maxIdle;
@Value("${redis.maxWaitMillis}")
private long maxWaitMillis;
private JedisPool jedisPool;
/*public RedisClinet(){
initialPool();
}*/
/**
* 初始化非切片池
*/
@PostConstruct
private void initialPool()
{
// 池基本配置
JedisPoolConfig config = new JedisPoolConfig();
//连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true
//config.setBlockWhenExhausted(true);
//设置的逐出策略类名, 默认DefaultEvictionPolicy(当连接超过最大空闲时间,或连接数超过最大空闲连接数)
//config.setEvictionPolicyClassName("org.apache.commons.pool2.impl.DefaultEvictionPolicy");
//是否启用pool的jmx管理功能, 默认true
//config.setJmxEnabled(true);
//config.setJmxNamePrefix("pool");
//是否启用后进先出, 默认true
//config.setLifo(true);
//最大空闲连接数, 默认8个
config.setMaxIdle(maxIdle <= 0 ? 10 : maxIdle);
//最大连接数, 默认8个
config.setMaxTotal(maxTotal <= 0 ? 50 : maxTotal);
//获取连接时的最大等待毫秒数(如果设置为阻塞时BlockWhenExhausted),如果超时就抛异常, 小于零:阻塞不确定的时间, 默认-1
config.setMaxWaitMillis(maxWaitMillis <= 0 ? 100000 : maxWaitMillis);
//逐出连接的最小空闲时间 默认1800000毫秒(30分钟)
//config.setMinEvictableIdleTimeMillis(1800000);
//最小空闲连接数, 默认0
//config.setMinIdle(0);
//每次逐出检查时 逐出的最大数目 如果为负数就是 : 1/abs(n), 默认3
//config.setNumTestsPerEvictionRun(3);
//对象空闲多久后逐出, 当空闲时间>该值 且 空闲连接>最大空闲数 时直接逐出,不再根据MinEvictableIdleTimeMillis判断 (默认逐出策略)
//config.setSoftMinEvictableIdleTimeMillis(1800000);
//在获取连接的时候检查有效性, 默认false
//config.setTestOnBorrow(false);
//在空闲时检查有效性, 默认false
//config.setTestWhileIdle(false);
//逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
//config.setTimeBetweenEvictionRunsMillis(-1);
jedisPool = new JedisPool(config, host, Integer.parseInt(null == port?"0":port));
log.debug("init jedis connection pool success -> host:"+host+",port:"+port);
}
/**
* 连接返回连接池
* @param jedis
* @param isBroken
*/
private void release(Jedis jedis, boolean isBroken) {
if (jedis != null) {
if (isBroken) {
jedisPool.returnBrokenResource(jedis);
} else {
jedisPool.returnResource(jedis);
}
log.debug("release jedis connection to pool ,active num:"+jedisPool.getNumActive()+",idel num:"+jedisPool.getNumIdle()+",wait num:"+jedisPool.getNumWaiters());
}
}
/**
* 获取jedis client
* @return
*/
private Jedis getJedis(){
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
jedis.auth(auth);
log.debug("get jedis client from connection pool success");
} catch (Exception e) {
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("get jedis client from connection pool fail or jedis connection pool init have error,check the host/port/auth!",e);
}
return jedis;
}
/**
* 对象置入缓存
* @param object
* @param key
* @param args 失效时间（单位：秒） 小于等于0认为永不过期
* @return
*/
public void set(Object object,String key,int... args) {
boolean isBroken = false;
if(null == object || StringUtils.isBlank(key))
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis set object or key can not be null");
Jedis jedis = null;
int validTime = ArrayUtils.isNotEmpty(args) ? args[0] : 0;
try {
jedis = getJedis();
jedis.set(key.getBytes(), SerializeUtil.serialize(object));
if(validTime > 0)
jedis.expire(key.getBytes(), validTime);
} catch (Exception e) {
isBroken = true;
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis set object have error",e);
}finally{
release(jedis, isBroken);
}
}
/**
* 从缓存中取值
* @param key
* @return
*/
public Object get(String key){
boolean isBroken = false;
if(StringUtils.isBlank(key))
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis get key can not be null");
Jedis jedis = null;
Object result = null;
try {
jedis = getJedis();
byte[] value = jedis.get(key.getBytes());
result = SerializeUtil.unSerialize(value);
} catch (Exception e) {
isBroken = true;
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis get object have error",e);
}finally{
release(jedis, isBroken);
}
return result;
}
/**
* 从缓存中删除
* @param key
* @return
*/
public boolean del(String key){
boolean isBroken = false;
if(StringUtils.isBlank(key))
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis del key can not be null");
Jedis jedis = null;
boolean isSuc = false;
try {
jedis = getJedis();
isSuc = jedis.del(key.getBytes())>0;
} catch (Exception e) {
isBroken = true;
throw ProcessCodeEnum.PROCESS_ERR.buildProcessException("jedis del object have error",e);
}finally{
release(jedis, isBroken);
}
return isSuc;
}
}