ssm开发使用redis作为缓存，使用步骤

1、关于spring配置文件中对于redis的配置

 　　<!-- redis配置 -->
     <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
         <!-- <property name="maxActive" value="90"/> -->
         <property name="maxIdle" value="5"/>
         <!-- <property name="maxWait" value="1000"/> -->
         <property name="testOnBorrow" value="true"/>
     </bean>
　　　　<!--配置redis数据源-->
     <bean id="jedisPool" class="redis.clients.jedis.JedisPool" destroy-method="destroy">
         <constructor-arg ref="jedisPoolConfig"/>
         <constructor-arg value="192.168.21.195"/>
         <constructor-arg value="6379"/>
     </bean>
　　　　<!--配置自定义的RedisAPI工具类-->
     <bean id="redisAPI" class="org.slsale.common.RedisAPI">
         <property name="jedisPool" ref="jedisPool"/>
     </bean>

2、配置自定义的RedisAPI,对redis数据库的管理

 package org.slsale.common;

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

 /**
  * jedisAPI
  * @author luzhewu
  *
  */
 public class RedisAPI {
     public JedisPool jedisPool;// redis连接池对象

     public JedisPool getJedisPool() {
         return jedisPool;
     }

     public void setJedisPool(JedisPool jedisPool) {
         this.jedisPool = jedisPool;
     }

     /**
      * set key and value tp redis
      * @param key
      * @param value
      * @return
      */
     public boolean set(String key, String value) {
         Jedis jedis = null;
         try {
             jedis = jedisPool.getResource();// 获取jedis对象
             jedis.set(key, value);
             return true;
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             // 返还到连接池
             returnResource(jedisPool, jedis);
         }
         return false;
     }

     /**
      * 判断某个key是否存在
      * @param key
      * @return
      */
     public boolean exist(String key) {
         Jedis jedis = null;
         try {
             jedis = jedisPool.getResource();
             return jedis.exists(key);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             // 返还到连接池
             returnResource(jedisPool, jedis);
         }
         return false;
     }

     /**
      * 通过key获取value
      * @param key
      * @return
      */
     public String get(String key) {
         String value = null;
         Jedis jedis = null;
         try {
             jedis = jedisPool.getResource();
             value = jedis.get(key);
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
             // 返还到连接池
             returnResource(jedisPool, jedis);
         }
         return value;
     }

     /**
      * 返还到连接池
      * @param jedisPool
      * @param jedis
      */
     public static void returnResource(JedisPool jedisPool, Jedis jedis) {
         if (jedis != null) {
             jedisPool.returnResource(jedis);
         }
     }
 }

3、redis相关依赖

  　　　　<!-- redis相关依赖jedis -->
         <dependency>
             <groupId>redis.clients</groupId>
             <artifactId>jedis</artifactId>
         <version>2.6.1</version>