Java操作redis客户端Jedis连接集群(Cluster)

Posted 2021-03-18 royal6

创建JedisCluster类连接redis集群。

@Test

public void testJedisCluster() throws Exception {

     //创建一连接，JedisCluster对象,在系统中是单例存在

     Set<HostAndPort> nodes = new HashSet<>();

     nodes.add(new HostAndPort("127.0.0.1", 7001));

     nodes.add(new HostAndPort("127.0.0.1", 7002));

     nodes.add(new HostAndPort("127.0.0.1", 7003));

     nodes.add(new HostAndPort("127.0.0.1", 7004));

     nodes.add(new HostAndPort("127.0.0.1", 7005));

     nodes.add(new HostAndPort("127.0.0.1", 7006));

     JedisCluster cluster = new JedisCluster(nodes);

     //执行JedisCluster对象中的方法，方法和redis一一对应。

     cluster.set("cluster-test", "my jedis cluster test");

     String result = cluster.get("cluster-test");

     System.out.println(result);

     //程序结束时需要关闭JedisCluster对象

     cluster.close();

}

 

使用spring

• 配置applicationContext.xml

<!-- 连接池配置 -->

<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">

     <!-- 最大连接数 -->

     <property name="maxTotal" value="30" />

     <!-- 最大空闲连接数 -->

     <property name="maxIdle" value="10" />

     <!-- 每次释放连接的最大数目 -->

     <property name="numTestsPerEvictionRun" value="1024" />

     <!-- 释放连接的扫描间隔（毫秒） -->

     <property name="timeBetweenEvictionRunsMillis" value="30000" />

     <!-- 连接最小空闲时间 -->

     <property name="minEvictableIdleTimeMillis" value="1800000" />

     <!-- 连接空闲多久后释放, 当空闲时间>该值 且 空闲连接>最大空闲连接数 时直接释放 -->

     <property name="softMinEvictableIdleTimeMillis" value="10000" />

     <!-- 获取连接时的最大等待毫秒数,小于零:阻塞不确定的时间,默认-1 -->

     <property name="maxWaitMillis" value="1500" />

     <!-- 在获取连接的时候检查有效性, 默认false -->

     <property name="testOnBorrow" value="true" />

     <!-- 在空闲时检查有效性, 默认false -->

     <property name="testWhileIdle" value="true" />

     <!-- 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true -->

     <property name="blockWhenExhausted" value="false" />

</bean>

<!-- redis集群 -->

<bean id="jedisCluster" class="redis.clients.jedis.JedisCluster">

     <constructor-arg index="0">

         <set>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7001"></constructor-arg>

              </bean>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7002"></constructor-arg>

              </bean>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7003"></constructor-arg>

              </bean>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7004"></constructor-arg>

              </bean>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7005"></constructor-arg>

              </bean>

              <bean class="redis.clients.jedis.HostAndPort">

                   <constructor-arg index="0" value="192.168.101.3"></constructor-arg>

                   <constructor-arg index="1" value="7006"></constructor-arg>

              </bean>

         </set>

     </constructor-arg>

     <constructor-arg index="1" ref="jedisPoolConfig"></constructor-arg>

</bean>

View Code

 

• 测试代码

private ApplicationContext applicationContext;

     @Before

     public void init() {

         applicationContext = new ClassPathXmlApplicationContext(

                   "classpath:applicationContext.xml");

     }

 

     // redis集群

     @Test

     public void testJedisCluster() {

         JedisCluster jedisCluster = (JedisCluster) applicationContext

                   .getBean("jedisCluster");

         jedisCluster.set("name", "zhangsan");

         String value = jedisCluster.get("name");

         System.out.println(value);

     }