redis集群--5.jedis工具类

1      工具类(接口封装)

常用的操作redis的方法提取出一个接口，分别对应单机版和集群版创建两个实现类。

1.1  接口定义

public interface JedisClient {

String set(String key, String value);
String get(String key);
Boolean exists(String key);
Long expire(String key, int seconds);
Long ttl(String key);
Long incr(String key);
Long hset(String key, String field,String value);
String hget(String key, String field);
Long hdel(String key, String... field);
Boolean hexists(String key, Stringfield);
List<String> hvals(String key);
Long del(String key);
}

1.2  注意

注意：单机版和集群版不能共存，使用单机版时注释集群版的配置。使用集群版，把单机版注释。

2      单机版

2.1  实现类

public class JedisClientPool implements JedisClient {

private JedisPool jedisPool;

public JedisPool getJedisPool() {
return jedisPool;
}

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

@Override
public String set(String key, String value) {
Jedis jedis = jedisPool.getResource();
String result = jedis.set(key, value);
jedis.close();
return result;
}

@Override
public String get(String key) {
Jedis jedis = jedisPool.getResource();
String result = jedis.get(key);
jedis.close();
return result;
}

@Override
public Boolean exists(String key) {
Jedis jedis = jedisPool.getResource();
Boolean result = jedis.exists(key);
jedis.close();
return result;
}

@Override
public Long expire(String key, int seconds) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.expire(key, seconds);
jedis.close();
return result;
}

@Override
public Long ttl(String key) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.ttl(key);
jedis.close();
return result;
}

@Override
public Long incr(String key) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.incr(key);
jedis.close();
return result;
}

@Override
public Long hset(String key, String field, String value) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.hset(key, field, value);
jedis.close();
return result;
}

@Override
public String hget(String key, String field) {
Jedis jedis = jedisPool.getResource();
String result = jedis.hget(key, field);
jedis.close();
return result;
}

@Override
public Long hdel(String key, String... field) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.hdel(key, field);
jedis.close();
return result;
}

@Override
public Boolean hexists(String key, String field) {
Jedis jedis = jedisPool.getResource();
Boolean result = jedis.hexists(key, field);
jedis.close();
return result;
}

@Override
public List<String> hvals(String key) {
Jedis jedis = jedisPool.getResource();
List<String> result = jedis.hvals(key);
jedis.close();
return result;
}

@Override
public Long del(String key) {
Jedis jedis = jedisPool.getResource();
Long result = jedis.del(key);
jedis.close();
return result;
}

}

2.2  applicationContext-redis.xml

配置：applicationContext-redis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd"> 
<!-- 连接redis单机版 -->
<bean id="jedisClientPool" class="cn.e3mall.common.jedis.JedisClientPool">
<property name="jedisPool" ref="jedisPool"></property>
</bean>
<bean id="jedisPool" class="redis.clients.jedis.JedisPool">
<constructor-arg name="host" value="192.168.25.101"/>
<constructor-arg name="port" value="6379"/>
</bean>

</beans> 

3      集群版

3.1  实现类

public class JedisClientCluster implements JedisClient {

private JedisCluster jedisCluster;

public JedisCluster getJedisCluster() {
return jedisCluster;
}

public void setJedisCluster(JedisCluster jedisCluster) {
this.jedisCluster = jedisCluster;
}

@Override
public String set(String key, String value) {
return jedisCluster.set(key, value);
}

@Override
public String get(String key) {
return jedisCluster.get(key);
}

@Override
public Boolean exists(String key) {
return jedisCluster.exists(key);
}

@Override
public Long expire(String key, int seconds) {
return jedisCluster.expire(key, seconds);
}

@Override
public Long ttl(String key) {
return jedisCluster.ttl(key);
}

@Override
public Long incr(String key) {
return jedisCluster.incr(key);
}

@Override
public Long hset(String key, String field, String value) {
return jedisCluster.hset(key, field, value);
}

@Override
public String hget(String key, String field) {
return jedisCluster.hget(key, field);
}

@Override
public Long hdel(String key, String... field) {
return jedisCluster.hdel(key, field);
}

@Override
public Boolean hexists(String key, String field) {
return jedisCluster.hexists(key, field);
}

@Override
public List<String> hvals(String key) {
return jedisCluster.hvals(key);
}

@Override
public Long del(String key) {
return jedisCluster.del(key);
}

}

3.2  Spring的配置：

<!-- 连接redis集群 -->
<bean id="jedisClientCluster" class="cn.e3mall.common.jedis.JedisClientCluster">
<property name="jedisCluster" ref="jedisCluster"/>
</bean>
<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">
<constructor-arg name="nodes">
<set>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.101"></constructor-arg>
<constructor-arg name="port" value="6379"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.101"></constructor-arg>
<constructor-arg name="port" value="6380"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.101"></constructor-arg>
<constructor-arg name="port" value="6381"></constructor-arg>
</bean>
<bean class="redis.clients.jedis.HostAndPort">
<constructor-arg name="host" value="192.168.25.101"></constructor-arg>
<constructor-arg name="port" value="6382"></constructor-arg>
</bean>
</set>
</constructor-arg>
</bean> 

4      测试

单机版和集群版都一样，他们唯一区别就是spring配置不同

@Test
public void testJedisClient() throws Exception{
//初始化spring容器
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-redis.xml");
//从容器中获得JedisClient对象
JedisClient jedisClient =applicationContext.getBean(JedisClient.class);
jedisClient.set("mytest", "jedisClient");
String string = jedisClient.get("mytest");
System.out.println(string);
}