Spring3.1 Cache注解
依赖jar包:
- <!-- redis -->
- <dependency>
- <groupId>org.springframework.data</groupId>
- <artifactId>spring-data-redis</artifactId>
- <version>1.3.4.RELEASE</version>
- </dependency>
- <dependency>
- <groupId>redis.clients</groupId>
- <artifactId>jedis</artifactId>
- <version>2.5.2</version>
- </dependency>
applicationContext-cache-redis.xml
- <context:property-placeholder
- location="classpath:/config/properties/redis.properties" />
- <!-- 启用缓存注解功能,这个是必须的,否则注解不会生效,另外,该注解一定要声明在spring主配置文件中才会生效 -->
- <cache:annotation-driven cache-manager="cacheManager" />
- <!-- spring自己的换管理器,这里定义了两个缓存位置名称 ,既注解中的value -->
- <bean id="cacheManager" class="org.springframework.cache.support.SimpleCacheManager">
- <property name="caches">
- <set>
- <bean class="org.cpframework.cache.redis.RedisCache">
- <property name="redisTemplate" ref="redisTemplate" />
- <property name="name" value="default"/>
- </bean>
- <bean class="org.cpframework.cache.redis.RedisCache">
- <property name="redisTemplate" ref="redisTemplate02" />
- <property name="name" value="commonCache"/>
- </bean>
- </set>
- </property>
- </bean>
- <!-- redis 相关配置 -->
- <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
- <property name="maxIdle" value="${redis.maxIdle}" />
- <property name="maxWaitMillis" value="${redis.maxWait}" />
- <property name="testOnBorrow" value="${redis.testOnBorrow}" />
- </bean>
- <bean id="connectionFactory"
- class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
- p:host-name="${redis.host}" p:port="${redis.port}" p:pool-config-ref="poolConfig"
- p:database="${redis.database}" />
- <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
- <property name="connectionFactory" ref="connectionFactory" />
- </bean>
- <bean id="connectionFactory02"
- class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
- p:host-name="${redis.host}" p:port="${redis.port}" p:pool-config-ref="poolConfig"
- p:database="${redis.database}" />
- <bean id="redisTemplate02" class="org.springframework.data.redis.core.RedisTemplate">
- <property name="connectionFactory" ref="connectionFactory02" />
- </bean>
redis.properties
- # Redis settings
- # server IP
- redis.host=192.168.xx.xx
- # server port
- redis.port=6379
- # use dbIndex
- redis.database=0
- # 控制一个pool最多有多少个状态为idle(空闲的)的jedis实例
- redis.maxIdle=300
- # 表示当borrow(引入)一个jedis实例时,最大的等待时间,如果超过等待时间(毫秒),则直接抛出JedisConnectionException;
- redis.maxWait=3000
- # 在borrow一个jedis实例时,是否提前进行validate操作;如果为true,则得到的jedis实例均是可用的
- redis.testOnBorrow=true
RedisCache.java
- package org.cpframework.cache.redis;
- import java.io.ByteArrayInputStream;
- import java.io.ByteArrayOutputStream;
- 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() {
- // TODO Auto-generated method stub
- 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 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;
- }
- });
- }
- /**
- * 描述 : <Object转byte[]>. <br>
- * <p>
- * <使用方法说明>
- * </p>
- *
- * @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;
- }
- /**
- * 描述 : <byte[]转Object>. <br>
- * <p>
- * <使用方法说明>
- * </p>
- *
- * @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";
- }
- });
- }
- }