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  • (08)redis之使用java客户端、spring连接redis、redis集群示例

    一、java代码连接

      1、新建工程,并引入以下包:

      jedis-2.7.0.jar、commons-pool2-2.3.jar、junit-4.10.jar

      2、单实例连接

      /**
         * 单实例连接
         */
        @Test
        public  void jedisClient(){
            //创建一个Jedis的连接
            Jedis jedis=new Jedis("192.168.7.151",6379);
            //可以选择库
            jedis.select(2);
            //写入值
            jedis.set("jediskey", "哈哈哈哈");
            //获取值
            String jedisStr=jedis.get("jediskey");
            System.out.println(jedisStr);
            Assert.assertEquals("哈哈哈哈",jedisStr);
            //关闭连接
            jedis.close();
        }

      2、连接池连接

      /**
         * 连接池连接
         */
        @Test
        public void jedisPool(){
            //创建一连接池对象
            JedisPool pool=new JedisPool("192.168.7.151",6379);
            //从连接池中获得连接
            Jedis jedis=pool.getResource();
            jedis.select(3);
            jedis.set("jeds", "jedis连接池");
            String getStr=jedis.get("jeds");
            System.out.println(getStr);
            //关闭连接
            jedis.close();
            //关闭连接池
            pool.close();
            Assert.assertEquals("jedis连接池", getStr);
        }

      3、JedisCluster连接集群

      /**
         * JedisCluster 连接集群
         * @throws Exception
         */
        @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("192.168.7.151", 7001));
            nodes.add(new HostAndPort("192.168.7.151", 7002));
            nodes.add(new HostAndPort("192.168.7.151", 7003));
            nodes.add(new HostAndPort("192.168.7.151", 7004));
            nodes.add(new HostAndPort("192.168.7.151", 7005));
            nodes.add(new HostAndPort("192.168.7.151", 7006));
            nodes.add(new HostAndPort("192.168.7.151", 7007));
            nodes.add(new HostAndPort("192.168.7.151", 7008));
            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();
        }

    二、使用spring配置单机redis

      1、新建工程,并引入以下包:

      commons-pool2-2.3.jar
      jedis-2.7.0.jar
      junit-4.10.jar
      spring-expression-3.2.0.RELEASE.jar
      spring-core-3.2.0.RELEASE.jar
      spring-context-3.2.0.RELEASE.jar
      spring-beans-3.2.0.RELEASE.jar
      commons-logging-1.1.1.jar

      2、工程中新建Source Folder目录:config,config里面添加applicationContext.xml,如下:

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.2.xsd 
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
    
        <!-- 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="false" />
            <!-- 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单机 通过连接池 -->
        <bean id="jedisPool" class="redis.clients.jedis.JedisPool" destroy-method="close">
            <constructor-arg name="poolConfig" ref="jedisPoolConfig" />
            <constructor-arg name="host" value="192.168.7.151" />
            <constructor-arg name="port" value="6379" />
        </bean>
    </beans>

      3、测试方法如下:

      /**
         * spring配置单机redis
         */
        @Test
        public void getJedisPool(){
            ClassPathXmlApplicationContext applicationContext=new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
            JedisPool pool = (JedisPool) applicationContext.getBean("jedisPool");
            Jedis jedis=pool.getResource();
            jedis.set("spring","spring测试redis");
            String spring = jedis.get("spring");
            System.out.println(spring);
            jedis.close();
            pool.close();
            applicationContext.close(); 
        }

    三、使用spring配置redis集群

      1、工程与引入的包如上

      2、新建applicationContext2.xml如下:

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans 
            http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
            http://www.springframework.org/schema/mvc 
            http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
            http://www.springframework.org/schema/context 
            http://www.springframework.org/schema/context/spring-context-3.2.xsd 
            http://www.springframework.org/schema/aop 
            http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
            http://www.springframework.org/schema/tx 
            http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">
    
        <!-- 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="false" />
            <!-- 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="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7001"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7002"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7003"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7004"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7005"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7006"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7007"></constructor-arg>
                    </bean>
                    <bean class="redis.clients.jedis.HostAndPort">
                        <constructor-arg index="0" value="192.168.7.151"></constructor-arg>
                        <constructor-arg index="1" value="7008"></constructor-arg>
                    </bean>
                </set>
            </constructor-arg>
            <constructor-arg index="1" ref="jedisPoolConfig"></constructor-arg>
        </bean>
        
    </beans>

      3、测试方法如下:

      /**
         * spring配置redis集群
         */
        @Test
        public void getJedisPool(){
            ClassPathXmlApplicationContext applicationContext=new ClassPathXmlApplicationContext("classpath:applicationContext2.xml");
            JedisCluster jedisCluster = (JedisCluster) applicationContext.getBean("jedisCluster");
            jedisCluster.set("jedisCluster","spring测试jedisCluster");
            String spring = jedisCluster.get("jedisCluster");
            System.out.println(spring);
            applicationContext.close(); 
        }
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  • 原文地址:https://www.cnblogs.com/javasl/p/12099052.html
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