ssm开发使用redis作为缓存，使用步骤

Posted 2020-09-30 羽哲

1、关于spring配置文件中对于redis的配置

 

 1 　　<!-- redis配置 -->
 2     <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
 3         <!-- <property name="maxActive" value="90"/> -->
 4         <property name="maxIdle" value="5"/>
 5         <!-- <property name="maxWait" value="1000"/> -->
 6         <property name="testOnBorrow" value="true"/>
 7     </bean>
　　　　<!--配置redis数据源-->
 8     <bean id="jedisPool" class="redis.clients.jedis.JedisPool" destroy-method="destroy">
 9         <constructor-arg ref="jedisPoolConfig"/>
10         <constructor-arg value="192.168.21.195"/>
11         <constructor-arg value="6379"/>
12     </bean>
　　　　<!--配置自定义的RedisAPI工具类-->
13     <bean id="redisAPI" class="org.slsale.common.RedisAPI">
14         <property name="jedisPool" ref="jedisPool"/>
15     </bean>

 

 

 

2、配置自定义的RedisAPI,对redis数据库的管理

 

 1 package org.slsale.common;
 2 
 3 import redis.clients.jedis.Jedis;
 4 import redis.clients.jedis.JedisPool;
 5 
 6 /**
 7  * jedisAPI
 8  * @author luzhewu
 9  *
10  */
11 public class RedisAPI {
12     public JedisPool jedisPool;// redis连接池对象
13 
14     public JedisPool getJedisPool() {
15         return jedisPool;
16     }
17 
18     public void setJedisPool(JedisPool jedisPool) {
19         this.jedisPool = jedisPool;
20     }
21 
22     /**
23      * set key and value tp redis
24      * @param key
25      * @param value
26      * @return
27      */
28     public boolean set(String key, String value) {
29         Jedis jedis = null;
30         try {
31             jedis = jedisPool.getResource();// 获取jedis对象
32             jedis.set(key, value);
33             return true;
34         } catch (Exception e) {
35             e.printStackTrace();
36         } finally {
37             // 返还到连接池
38             returnResource(jedisPool, jedis);
39         }
40         return false;
41     }
42 
43     /**
44      * 判断某个key是否存在
45      * @param key
46      * @return
47      */
48     public boolean exist(String key) {
49         Jedis jedis = null;
50         try {
51             jedis = jedisPool.getResource();
52             return jedis.exists(key);
53         } catch (Exception e) {
54             e.printStackTrace();
55         } finally {
56             // 返还到连接池
57             returnResource(jedisPool, jedis);
58         }
59         return false;
60     }
61 
62     /**
63      * 通过key获取value
64      * @param key
65      * @return
66      */
67     public String get(String key) {
68         String value = null;
69         Jedis jedis = null;
70         try {
71             jedis = jedisPool.getResource();
72             value = jedis.get(key);
73         } catch (Exception e) {
74             e.printStackTrace();
75         } finally {
76             // 返还到连接池
77             returnResource(jedisPool, jedis);
78         }
79         return value;
80     }
81 
82     /**
83      * 返还到连接池
84      * @param jedisPool
85      * @param jedis
86      */
87     public static void returnResource(JedisPool jedisPool, Jedis jedis) {
88         if (jedis != null) {
89             jedisPool.returnResource(jedis);
90         }
91     }
92 }

 

3、redis相关依赖

 

1  　　　　<!-- redis相关依赖jedis -->
2         <dependency>
3             <groupId>redis.clients</groupId>
4             <artifactId>jedis</artifactId>
5         <version>2.6.1</version>