4、redis之使用commons-pool

增加池的配置文件redis-pool.properties:

#最大能够保持idel状态的对象数
redis.pool.maxIdle=200
#当池内没有返回对象时，最大等待时间
redis.pool.maxWait=1000
#当调用borrow Object方法时，是否进行有效性检查
redis.pool.testOnBorrow=true
#当调用return Object方法时，是否进行有效性检查
redis.pool.testOnReturn=true
#IP
redis.ip=127.0.0.1
#Port
redis.port=6379

RedisApp.java

package com.yzl;

import java.util.ResourceBundle;

import org.apache.log4j.Logger;

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

/**
 * Reids之jedis的CRUD操作
 *
 * @author yangzhilong
 * @see [相关类/方法]（可选）
 * @since [产品/模块版本] （可选）
 */
public class RedisApp {
    public Logger log = Logger.getLogger(this.getClass());
    
    private static JedisPool pool;
    private static ResourceBundle bundle;
    
    static{
        bundle = ResourceBundle.getBundle("redis-pool");
        if(bundle == null){
            //假设直接抛出Exception咋必须进行处理，不然编译不会通过
            throw new IllegalArgumentException("redis-pool.properties file is not found");
        }
        JedisPoolConfig config = new JedisPoolConfig();
        //设置pool的一些参数,可选,详细配置项参见GenericObjectPoolConfig类
        config.setMaxIdle(Integer.valueOf(bundle.getString("redis.pool.maxIdle")));
        config.setMaxWaitMillis(Long.valueOf(bundle.getString("redis.pool.maxWait")));
        config.setTestOnBorrow(Boolean.valueOf(bundle.getString("redis.pool.testOnBorrow")));
        config.setTestOnReturn(Boolean.valueOf(bundle.getString("redis.pool.testOnReturn")));
        
        //使用默认配置时可以使用如下方法初始化池
        //pool = new JedisPool(bundle.getString("redis.ip"), Integer.valueOf(bundle.getString("redis.port")));
        pool = new JedisPool(config, bundle.getString("redis.ip"), Integer.valueOf(bundle.getString("redis.port")));
    }
    
    /**
     * 
     * 功能描述: <br>
     * CRUD操作之hello world
     *
     * @see [相关类/方法](可选)
     * @since [产品/模块版本](可选)
     */
    public void crudFromRedisWidthSimple(){
        Jedis jedis = new Jedis(bundle.getString("redis.ip"), Integer.valueOf(bundle.getString("redis.port")));
        log.info("get connection with simple ");
        crudMethod(jedis);
        //关闭连接
        jedis.close();
    }
    
    /**
     * 
     * 使用common-pool操作redis
     *
     * @see [相关类/方法](可选)
     * @since [产品/模块版本](可选)
     */
    public void crudFromRedisWidthPool(){
        Jedis jedis = pool.getResource();
        log.info("get connection from pool , obect is:" + jedis);
        crudMethod(jedis);
        //释放链接
        pool.returnResourceObject(jedis);
    }
    
    /**
     * 
     * crud基本操作单元
     *
     * @param jedis
     * @see [相关类/方法](可选)
     * @since [产品/模块版本](可选)
     */
    private void crudMethod(Jedis jedis){
        log.info("insert value to redis~~~");
        jedis.set("name", "hello jedis");
        
        log.info("get value from redis, value:" + jedis.get("name"));
        
        log.info("delete key from redis~~~");
        jedis.del("name");
        
        log.info("get value from redis, value:" + jedis.get("name"));
    }
}

RedisAppTest.java

package com.yzl;

import org.junit.Test;

/**
 * RedisApp的测试类
 *
 * @author yangzhilong
 * @see [相关类/方法]（可选）
 * @since [产品/模块版本] （可选）
 */
public class RedisAppTest {
    
    @Test
    public void crudFromRedisWidthSimpleTest(){
        RedisApp app = new RedisApp();
        app.crudFromRedisWidthSimple();
    }
    
    @Test
    public void crudFromRedisWidthPoolTest(){
        RedisApp app = new RedisApp();
        app.crudFromRedisWidthPool();
    }
}

运行单元测试的结果：

2015-08-12 16:03:24,449 [com.yzl.RedisApp]-[INFO] get connection from pool , obect is:redis.clients.jedis.Jedis@cee47f1
2015-08-12 16:03:24,449 [com.yzl.RedisApp]-[INFO] insert value to redis~~~
2015-08-12 16:03:24,449 [com.yzl.RedisApp]-[INFO] get value from redis, value:hello jedis
2015-08-12 16:03:24,449 [com.yzl.RedisApp]-[INFO] delete key from redis~~~
2015-08-12 16:03:24,449 [com.yzl.RedisApp]-[INFO] get value from redis, value:null

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