mybatis的二级缓存sessionFactory缓存集成redis

package cn.seafood.cache;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ibatis.cache.Cache;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.exceptions.JedisConnectionException;
import cn.seafood.util.PropertiesLoader;

/**
*
* @ClassName: RedisCache
* @Description: TODO(使用第三方缓存服务器redis，处理二级缓存)
*
*/
public class RedisCache   implements Cache {
private static Log log = LogFactory.getLog(RedisCache.class);
/** The ReadWriteLock. */
private final ReadWriteLock readWriteLock = new ReentrantReadWriteLock();

private String id;
public RedisCache(final String id) {
if (id == null) {
throw new IllegalArgumentException("必须传入ID");
}
log.debug("MybatisRedisCache:id=" + id);
this.id=id;
}

@Override
public String getId() {
return this.id;
}

@Override
public int getSize() {
Jedis jedis = null;
JedisPool jedisPool = null;
int result = 0;
boolean borrowOrOprSuccess = true;
try {
jedis   = CachePool.getInstance().getJedis();
jedisPool = CachePool.getInstance().getJedisPool();
result = Integer.valueOf(jedis.dbSize().toString());
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
jedisPool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
jedisPool.returnResource(jedis);
}
return result;

}

@Override
public void putObject(Object key, Object value) {
if(log.isDebugEnabled())
log.debug("putObject:" + key.hashCode() + "=" + value);
if(log.isInfoEnabled())
log.info("put to redis sql :" +key.toString());
Jedis jedis = null;
JedisPool jedisPool = null;
boolean borrowOrOprSuccess = true;
try {
jedis   = CachePool.getInstance().getJedis();
jedisPool = CachePool.getInstance().getJedisPool();
jedis.set(SerializeUtil.serialize(key.hashCode()), SerializeUtil.serialize(value));
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
jedisPool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
jedisPool.returnResource(jedis);
}

}

@Override
public Object getObject(Object key) {
Jedis jedis = null;
JedisPool jedisPool = null;
Object value = null;
boolean borrowOrOprSuccess = true;
try {
jedis   = CachePool.getInstance().getJedis();
jedisPool = CachePool.getInstance().getJedisPool();
value  = SerializeUtil.unserialize(jedis.get(SerializeUtil.serialize(key.hashCode())));
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
jedisPool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
jedisPool.returnResource(jedis);
}
if(log.isDebugEnabled())
log.debug("getObject:" + key.hashCode() + "=" + value);
return value;
}

@Override
public Object removeObject(Object key) {
Jedis jedis = null;
JedisPool jedisPool = null;
Object value = null;
boolean borrowOrOprSuccess = true;
try {
jedis   = CachePool.getInstance().getJedis();
jedisPool = CachePool.getInstance().getJedisPool();
value  = jedis.expire(SerializeUtil.serialize(key.hashCode()), 0);
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
jedisPool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
jedisPool.returnResource(jedis);
}
if(log.isDebugEnabled())
log.debug("getObject:" + key.hashCode() + "=" + value);
return value;
}

@Override
public void clear() {
Jedis jedis = null;
JedisPool jedisPool = null;
boolean borrowOrOprSuccess = true;
try {
jedis   = CachePool.getInstance().getJedis();
jedisPool = CachePool.getInstance().getJedisPool();
jedis.flushDB();
jedis.flushAll();
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
jedisPool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
jedisPool.returnResource(jedis);
}
}

@Override
public ReadWriteLock getReadWriteLock() {
return readWriteLock;
}
/**
*
* @ClassName: CachePool
* @Description: TODO(单例Cache池)
*
*/
public static class CachePool {
JedisPool pool;
private static final CachePool cachePool = new CachePool();

public static CachePool getInstance(){
return cachePool;
}
private CachePool() {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxIdle(100);
config.setMaxWaitMillis(1000l);
PropertiesLoader pl =  new PropertiesLoader("classpath:config/redis.properties");
pool = new JedisPool(config,pl.getProperty("redisvip"));
}
public  Jedis getJedis(){
Jedis jedis = null;
boolean borrowOrOprSuccess = true;
try {
jedis = pool.getResource();
} catch (JedisConnectionException e) {
borrowOrOprSuccess = false;
if (jedis != null)
pool.returnBrokenResource(jedis);
} finally {
if (borrowOrOprSuccess)
pool.returnResource(jedis);
}
jedis = pool.getResource();
return jedis;
}

public JedisPool getJedisPool(){
return this.pool;
}

}

public static class SerializeUtil {
public static byte[] serialize(Object object) {
ObjectOutputStream oos = null;
ByteArrayOutputStream baos = null;
try {
// 序列化
baos = new ByteArrayOutputStream();
oos = new ObjectOutputStream(baos);
oos.writeObject(object);
byte[] bytes = baos.toByteArray();
return bytes;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

public static Object unserialize(byte[] bytes) {
if(bytes == null)return null;
ByteArrayInputStream bais = null;
try {
// 反序列化
bais = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bais);
return ois.readObject();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
}

public class LoggingRedisCache extends LoggingCache {

public LoggingRedisCache(String id) {
super(new RedisCache(id));
}

}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE  mapper  PUBLIC  "-//mybatis.org//DTD  Mapper  3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.mvc.model.Account">
<!-- redis缓存 -->
<cache eviction="LRU" type="com.mvc.cache.LoggingRedisCache"/><br>
<select id="loginAccount" parameterType="account" resultType="account" useCache="true">
select * from account a where a.login=#{login} and a.pass=#{pass}
</select>
</mapper>

<settings>
<!-- 这个配置使全局的映射器启用或禁用缓存 -->
<setting name="cacheEnabled" value="true" />
<!-- 对于未知的SQL查询，允许返回不同的结果集以达到通用的效果 -->
<setting name="multipleResultSetsEnabled" value="true"/>
<!-- 配置默认的执行器。SIMPLE 执行器没有什么特别之处。REUSE 执行器重用预处理语句。BATCH 执行器重用语句和批量更新 -->
<setting name="defaultExecutorType" value="REUSE" />
<!-- 全局启用或禁用延迟加载。当禁用时，所有关联对象都会即时加载。 -->
<setting name="lazyLoadingEnabled" value="false" />
<setting name="aggressiveLazyLoading" value="true" />
<!-- <setting name="enhancementEnabled" value="true"/> -->
<!-- 设置超时时间，它决定驱动等待一个数据库响应的时间。 -->
<setting name="defaultStatementTimeout" value="25000" />
</settings>

<setting name="lazyLoadingEnabled" value="false" />

<setting name="aggressiveLazyLoading" value="true" />