spring整合redis客户端及缓存接口设计（转）

 1 /**
 2  * @ClassName: JedisTemple
 3  * @Description: Jedis 操作模板类，为啥要这个？请参照{@link JdbcTemple} 封装重复不必要的操作
 4  * @author 徐飞
 5  * @date 2016年1月26日 下午2:37:24
 6  *
 7  */
 8 public class JedisTemple {
 9 
10     /** 缓存客户端 **/
11     private JedisPool jedisPool;// 非切片连接池
12 
13     public JedisTemple(JedisPool jedisPool) {
14         this.jedisPool = jedisPool;
15     }
16 
17     /**
18      * @Title: execute
19      * @Description: 执行{@link RedisPoolCallback#doInJedis(Jedis)}的方法
20      * @param action
21      * @return
22      * @author 徐飞
23      */
24     public <T> T execute(RedisPoolCallback<T> action) {
25         T value = null;
26         Jedis jedis = null;
27         try {
28             jedis = jedisPool.getResource();
29             return action.doInJedis(jedis);
30         } catch (Exception e) {
31             // 释放redis对象
32             jedisPool.returnBrokenResource(jedis);
33             e.printStackTrace();
34         } finally {
35             // 返还到连接池
36             returnResource(jedisPool, jedis);
37         }
38 
39         return value;
40     }
41 
42     /** 
43     * 返还到连接池 
44     * @param pool  
45     * @param redis 
46     */
47     private void returnResource(JedisPool pool, Jedis redis) {
48         // 如果redis为空不返回
49         if (redis != null) {
50             pool.returnResource(redis);
51         }
52     }
53 
54     public JedisPool getJedisPool() {
55         return jedisPool;
56     }
57 
58     public void setJedisPool(JedisPool jedisPool) {
59         this.jedisPool = jedisPool;
60     }
61 
62 }

 1 import redis.clients.jedis.Jedis;
 2 
 3 /**
 4  * @ClassName: RedisPoolCallback
 5  * @Description: redis操作回调接口，此接口主要为JedisTemple模板使用
 6  * @author 徐飞
 7  * @date 2016年1月26日 下午2:35:41
 8  *
 9  * @param <T>
10  */
11 public interface RedisPoolCallback<T> {
12     /**
13      * @Title: doInJedis
14      * @Description: 回调执行方法，需要重新此方法，一般推荐使用匿名内部类
15      * @param jedis
16      * @return
17      * @author 徐飞
18      */
19     T doInJedis(Jedis jedis);
20 }

 1 import redis.clients.jedis.Jedis;

 2 import redis.clients.util.SafeEncoder;
 3 
 4 import com.cxypub.baseframework.sdk.util.ObjectUtils;
 5 
 6 /**
 7  * @ClassName: RedisCacheClient
 8  * @Description: redis缓存客户端
 9  * @author 徐飞
10  * @date 2015-4-16 上午10:42:32
11  *
12  */
13 public class RedisCacheClient implements SimpleCache {
14 
15     private JedisTemple jedisTemple;
16 
17     public RedisCacheClient(JedisTemple jedisTemple) {
18         this.jedisTemple = jedisTemple;
19     }
20 
21     @Override
22     public boolean add(final String key, final Object valueObject) {
23         try {
24             jedisTemple.execute(new RedisPoolCallback<Boolean>() {
25                 @Override
26                 public Boolean doInJedis(Jedis jedis) {
27                     jedis.set(SafeEncoder.encode(key), ObjectUtils.object2Byte(valueObject));
28                     return true;
29                 }
30 
31             });
32         } catch (Exception e) {
33             e.printStackTrace();
34             return false;
35         }
36         return true;
37     }
38 
39     @Override
40     public Object get(final String key) {
41 
42         return jedisTemple.execute(new RedisPoolCallback<Object>() {
43             @Override
44             public Object doInJedis(Jedis jedis) {
45                 byte[] cacheValue = jedis.get(SafeEncoder.encode(key));
46                 if (cacheValue != null) {
47                     return ObjectUtils.byte2Object(cacheValue);
48                 }
49                 return null;
50             }
51 
52         });
53     }
54 
55     @Override
56     public long delete(final String key) {
57         return jedisTemple.execute(new RedisPoolCallback<Long>() {
58             @Override
59             public Long doInJedis(Jedis jedis) {
60                 return jedis.del(key);
61             }
62         });
63     }
64 
65     @Override
66     public boolean add(final String key, Object value, final int seconds) {
67         try {
68             this.add(key, value);
69             jedisTemple.execute(new RedisPoolCallback<Long>() {
70                 @Override
71                 public Long doInJedis(Jedis jedis) {
72                     return jedis.expire(key, seconds);
73                 }
74             });
75         } catch (Exception e) {
76             e.printStackTrace();
77             return false;
78         }
79         return true;
80     }
81 
82     @Override
83     public boolean exists(final String key) {
84         return jedisTemple.execute(new RedisPoolCallback<Boolean>() {
85             @Override
86             public Boolean doInJedis(Jedis jedis) {
87                 return jedis.exists(key);
88             }
89         });
90     }
91 
92 }

 1 # Redis settings
 2 redis.host=192.168.1.215
 3 redis.port=6379
 4 redis.pass=
 5 
 6 # 控制一个pool可分配多少个jedis实例，通过pool.getResource()来获取；
 7 # 如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。
 8 redis.maxTotal=600
 9 # 控制一个pool最多有多少个状态为idle(空闲的)的jedis实例。
10 redis.maxIdle=300
11 # 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，则直接抛出JedisConnectionException；
12 redis.maxWaitMillis=1000
13 # 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；
14 redis.testOnBorrow=true

<?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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop 
           http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.0.xsd"
    default-autowire="autodetect" default-lazy-init="false">

    <!-- jedis 配置 -->
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">  
        <property name="maxIdle" value="${redis.maxIdle}" />  
        <property name="maxTotal" value="${redis.maxTotal}" />  
        <property name="maxWaitMillis" value="${redis.maxWaitMillis}" />  
        <property name="testOnBorrow" value="${redis.testOnBorrow}" />  
    </bean>
    
    <!-- jedis 连接池  -->
    <bean id="jedisPool" class="redis.clients.jedis.JedisPool">
        <constructor-arg ref="jedisPoolConfig" />
        <constructor-arg value="${redis.host}" />
        <constructor-arg value="${redis.port}" type="java.lang.Integer" />
    </bean>
    
    <!-- jedis 操作 temple  -->
    <bean id="jedisTemple" class="com.cxypub.baseframework.sdk.cache.JedisTemple">
        <constructor-arg ref="jedisPool" />
    </bean>
    
    <!-- jedis 客户端，真正提供给系统使用的客户端，当然如果这个客户端的方法不满足，可以使用jedisTemple -->
    <bean id="jedisClient" class="com.cxypub.baseframework.sdk.cache.RedisCacheClient">
        <constructor-arg ref="jedisTemple" />
    </bean>
    

</beans>

package com.cxypub.baseframework.sdk.cache;

import java.util.Date;

import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

import com.cxypub.baseframework.sdk.dictionary.entity.Dictionary;

public class RedisTest {
    public static void main(String[] args) {
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(500);
        config.setMaxIdle(5);
        config.setMaxWaitMillis(1000 * 100);
        config.setTestOnBorrow(true);
        JedisPool jedisPool = new JedisPool(config, "192.168.1.215", 6379);
        JedisTemple jedisTemple = new JedisTemple(jedisPool);
        RedisCacheClient client = new RedisCacheClient(jedisTemple);
        Dictionary dict = new Dictionary();
        dict.setId("qwertryruyrtutyu");
        dict.setDictChineseName("上海");
        dict.setCreateTime(new Date());
        client.add("xufei", dict);
        Dictionary dict2 = (Dictionary) client.get("xufei");
        System.out.println(dict2);
        System.out.println(dict == dict2);
    }
}