spring4集成redis 并使用@cacheable注解

<dependency>

<groupId>org.springframework.data</groupId>

<artifactId>spring-data-redis</artifactId>

<version>1.6.0.RELEASE</version>

</dependency>

<dependency>

<groupId>redis.clients</groupId>

<artifactId>jedis</artifactId>

<version>2.7.3</version>

</dependency>

xmlns:cache="http://www.springframework.org/schema/cache
xsi:schemaLocation="http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd"[/code] 
不加会报错。

然后加上开启spring cache的注解功能

<cache:annotation-driven cache-manager="cacheManager"/>


在加上redis的配置文件

然后新建spring-context-redis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd" default-autowire="byName" default-lazy-init="false">
<!-- 加载*.properties属性文件 -->
<context:property-placeholder location="classpath:common.properties" />
<bean id="cacheManager" class="org.springframework.cache.support.SimpleCacheManager">
<property name="caches">
<set>
<bean class="com.xiaoantimes.code.web.util.RedisCache">
<property name="redisTemplate" ref="redisTemplate" />
<property name="name" value="default"/>
</bean>
<bean class="com.xiaoantimes.code.web.util.RedisCache">
<property name="redisTemplate" ref="redisTemplate" />
<property name="name" value="commonCache"/>
</bean>
</set>
</property>
</bean>

<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxTotal" value="${redis.maxActive}" />
<property name="maxWaitMillis" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>

<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
p:hostName="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:database="${redis.database}" p:poolConfig-ref="poolConfig"/>

<bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
<property name="connectionFactory"   ref="connectionFactory" />
</bean>

</beans>


其中cacheManager中的两个bean需要修改一下路径。路径为RedisCache.java所在路径

下面是RedisCache.java的代码

import java.io.ByteArrayInputStream;
import java.io.B
c875
yteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

import org.springframework.cache.Cache;
import org.springframework.cache.support.SimpleValueWrapper;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;

public class RedisCache implements Cache {
private RedisTemplate<String, Object> redisTemplate;
private String name;

public RedisTemplate<String, Object> getRedisTemplate() {
return redisTemplate;
}

public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
this.redisTemplate = redisTemplate;
}

public void setName(String name) {
this.name = name;
}

@Override
public String getName() {
return this.name;
}

@Override
public Object getNativeCache() {
// TODO Auto-generated method stub
return this.redisTemplate;
}

@Override
public ValueWrapper get(Object key) {
// TODO Auto-generated method stub
final String keyf = (String) key;
Object object = null;
object = redisTemplate.execute(new RedisCallback<Object>() {
public Object doInRedis(RedisConnection connection)
throws DataAccessException {

byte[] key = keyf.getBytes();
byte[] value = connection.get(key);
if (value == null) {
return null;
}
return toObject(value);

}
});
return (object != null ? new SimpleValueWrapper(object) : null);
}

@Override
public <T> T get(Object o, Class<T> aClass) {
return null;
}

@Override
public void put(Object key, Object value) {
// TODO Auto-generated method stub
final String keyf = (String) key;
final Object valuef = value;
final long liveTime = 86400;

redisTemplate.execute(new RedisCallback<Long>() {
public Long doInRedis(RedisConnection connection)
throws DataAccessException {
byte[] keyb = keyf.getBytes();
byte[] valueb = toByteArray(valuef);
connection.set(keyb, valueb);
if (liveTime > 0) {
connection.expire(keyb, liveTime);
}
return 1L;
}
});
}

/**
* @param obj
* @return
*/
private byte[] toByteArray(Object obj) {
byte[] bytes = null;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject(obj);
oos.flush();
bytes = bos.toByteArray();
oos.close();
bos.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return bytes;
}

/**
* @param bytes
* @return
*/
private Object toObject(byte[] bytes) {
Object obj = null;
try {
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
ObjectInputStream ois = new ObjectInputStream(bis);
obj = ois.readObject();
ois.close();
bis.close();
} catch (IOException ex) {
ex.printStackTrace();
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
}
return obj;
}

@Override
public void evict(Object key) {
// TODO Auto-generated method stub
final String keyf = (String) key;
redisTemplate.execute(new RedisCallback<Long>() {
public Long doInRedis(RedisConnection connection)
throws DataAccessException {
return connection.del(keyf.getBytes());
}
});
}

@Override
public void clear() {
// TODO Auto-generated method stub
redisTemplate.execute(new RedisCallback<String>() {
public String doInRedis(RedisConnection connection)
throws DataAccessException {
connection.flushDb();
return "ok";
}
});
}
}


还有common.properties内容

redis.database= 0
redis.host=
redis.port=6379
redis.pass=
redis.maxIdle=300
redis.maxActive=600
redis.maxWait=1000
redis.testOnBorrow=true


使用  直接在方法上加@Cacheable(value=”commonCache”)

完成。