redis客户端cluster集群模式整合

一、pom文件引入redis依赖

<!-- redis 版本 -->
<redis.version>2.9.0</redis.version>
<spring.redis.version>1.8.1.RELEASE</spring.redis.version>

<!-- redis -->
<dependency>
    <groupId>commons-pool</groupId>
    <artifactId>commons-pool</artifactId>
    <version>1.5.6</version>
</dependency>
<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>${redis.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-redis</artifactId>
    <version>${spring.redis.version}</version>
</dependency>
</dependencies>

二、redis的可配置化参数

redis.properties配置参数

# JedisPoolConfig的参数
# 最大连接数
redis.pool.maxTotal=30
# 最大空闲时间
redis.pool.maxIdle=10
# 每次最大连接数
redis.pool.numTestsPerEvictionRun=1024
# 释放扫描的扫描间隔
redis.pool.timeBetweenEvictionRunsMillis=30000
# 连接的最小空闲时间
redis.pool.minEvictableIdleTimeMillis=1800000
# 连接控歘按时间多久后释放，当空闲时间>该值且空闲连接>最大空闲连接数时直接释放
redis.pool.softMinEvictableIdleTimeMillis=10000
# 获得链接时的最大等待毫秒数，小于0：阻塞不确定时间，默认-1
redis.pool.maxWaitMillis=1500
# 在获得链接的时候检查有效性，默认false
redis.pool.testOnBorrow=true
# 在空闲时检查有效性，默认false
redis.pool.testWhileIdle=true
# 连接耗尽时是否阻塞，false报异常，true阻塞超时,默认true
redis.pool.blockWhenExhausted=false

# redis集群中的密码
redis.password=han.sun

# RedisClusterConfiguration配置
redis.maxRedirects=6

# 主机和端口号
redis.host1=127.0.0.1
redis.port1=7001
redis.host2=127.0.0.1
redis.port2=7002
redis.host3=127.0.0.1
redis.port3=7003
redis.host4=127.0.0.1
redis.port4=7004
redis.host5=127.0.0.1
redis.port5=7005
redis.host6=127.0.0.1
redis.port6=7006

三、spring和redis整合

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">

    <context:component-scan base-package="com.eastrobot.robotdev"/>

    <!-- 加载配置文件 -->
    <bean id="annotationPropertyConfigurerRedis"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="order" value="1"/>
        <property name="ignoreUnresolvablePlaceholders" value="true"/>
        <property name="locations">
            <list>
                <value>classpath:redis.properties</value>
            </list>
        </property>
    </bean>

    <!--配置 jedis pool-->
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <!-- 最大连接数 -->
        <property name="maxTotal" value="${redis.pool.maxTotal}"/>
        <!-- 最大空闲时间 -->
        <property name="maxIdle" value="${redis.pool.maxIdle}"/>
        <!-- 每次最大连接数 -->
        <property name="numTestsPerEvictionRun" value="${redis.pool.numTestsPerEvictionRun}"/>
        <!-- 释放扫描的扫描间隔 -->
        <property name="timeBetweenEvictionRunsMillis" value="${redis.pool.timeBetweenEvictionRunsMillis}"/>
        <!-- 连接的最小空闲时间 -->
        <property name="minEvictableIdleTimeMillis" value="${redis.pool.minEvictableIdleTimeMillis}"/>
        <!-- 连接空闲按时间多久后释放，当空闲时间大于该值且空闲连接>最大空闲连接数时直接释放 -->
        <property name="softMinEvictableIdleTimeMillis" value="${redis.pool.softMinEvictableIdleTimeMillis}"/>
        <!-- 获得连接时的最大等待毫秒数，小于0：阻塞不确定时间，默认-1 -->
        <property name="maxWaitMillis" value="${redis.pool.maxWaitMillis}"/>
        <!-- 在获得连接的时候检查有效性，默认false -->
        <property name="testOnBorrow" value="${redis.pool.testOnBorrow}"/>
        <!-- 在空闲时检查有效性，默认false -->
        <property name="testWhileIdle" value="${redis.pool.testWhileIdle}"/>
        <!-- 连接耗尽时是否阻塞，false报异常，true阻塞超时 默认：true-->
        <property name="blockWhenExhausted" value="${redis.pool.blockWhenExhausted}"/>
    </bean>


    <!--配置RedisClusterConfiguration-->
    <bean id="redisClusterConfiguration" class="org.springframework.data.redis.connection.RedisClusterConfiguration">
        <property name="maxRedirects" value="${redis.maxRedirects}"/>
        <property name="clusterNodes">
            <set>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host1}"/>
                    <constructor-arg name="port" value="${redis.port1}"/>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host2}"/>
                    <constructor-arg name="port" value="${redis.port2}"/>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host3}"/>
                    <constructor-arg name="port" value="${redis.port3}"/>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host4}"/>
                    <constructor-arg name="port" value="${redis.port4}"/>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host5}"/>
                    <constructor-arg name="port" value="${redis.port5}"/>
                </bean>
                <bean class="org.springframework.data.redis.connection.RedisNode">
                    <constructor-arg name="host" value="${redis.host6}"/>
                    <constructor-arg name="port" value="${redis.port6}"/>
                </bean>
            </set>
        </property>
    </bean>

    <!-- Spring-redis连接池管理工厂 -->
    <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <constructor-arg name="poolConfig" ref="jedisPoolConfig"/>
        <constructor-arg name="clusterConfig" ref="redisClusterConfiguration"/>
        <property name="password" value="${redis.password}"/>
    </bean>

    <!--redisTemplate-->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">
        <property name="connectionFactory" ref="jedisConnectionFactory"/>
        <property name="keySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
        <!-- 如果想设置value为对象的话，这里不能配置成StringRedisSerializer -->
        <!-- 否则会报错  java.lang.ClassCastException: com.eastrobot.robotdev.entity.User cannot be cast to java.lang.String -->
        <!-- 而是要用JdkSerializationRedisSerializer，然后javabean实现Serializable接口 -->
        <property name="valueSerializer">
            <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
        </property>
        <property name="hashKeySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
        <property name="hashValueSerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>

        <!--开启事务  -->
        <property name="enableTransactionSupport" value="true"/>
    </bean>


</beans>

四、测试

public class ServiceTest extends BaseTest {

    private static final Logger log = LogManager.getLogger(ServiceTest.class);


    @Autowired
    private RedisTemplate<String, String> redisTemplate;


    @Test
    public void test1() {
        ValueOperations<String, String> operations = redisTemplate.opsForValue();

        // 存入key-value
        operations.set("name2", "zhangsan123");

        // 根据key取出Value
        Object name = operations.get("name2");
        System.out.println("name2:" + name);

        // 追加
        operations.append("name2", "is man");
        name = operations.get("name2");
        System.out.println("name2:" + name);

        // 获得并修改
        operations.getAndSet("name2", "xiaoijiqiren");
        name = operations.get("name2");
        System.out.println("修改后：" + name);
    }

    @Test
    public void boundValueOperations() {
        String key = "name1";
        /*
         * 先获取redis对value的操作对象,需要先设定key
         */
        BoundValueOperations<String, String> stringTemplate = redisTemplate.boundValueOps(key);

        //赋值key
        stringTemplate.set("test123424");
        //获取value
        String value = stringTemplate.get();
        System.out.println(key + "的值为:" + value);

        //从value下标,第0位开始替换原有字符串
        stringTemplate.set("test1", 0);
        String value1 = stringTemplate.get();
        System.out.println(key + "的值为:" + value1);

        //从value下标,第1位开始替换原有字符
        stringTemplate.set("test2", 1);
        String value2 = stringTemplate.get();
        System.out.println(key + "的值为:" + value2);

        //从value下标第7位进行替换,如果超过原有字符串长度,差额中间补齐并且则将原有字符串跟新的进行拼接,
        stringTemplate.set("test3", 7);
        String value3 = stringTemplate.get();
        System.out.println(key + "的值为:" + value3);

        /*
         * 设置value缓存时间 V value, long timeout, TimeUnit unit
         *     三个字段分别对应 value,缓存时间,缓存单位,例如天,小时等,具体的,看TimeUnit源码
         */
        //设置超时时间为1天
        stringTemplate.set("testTimeout", 1, TimeUnit.DAYS);
        //获取缓存时间,单位 秒
        Long expire = stringTemplate.getExpire();
        System.out.println(key + "的缓存时间为:" + expire);
    }


    @Test
    public void testList() {
        ListOperations<String, String> ops = redisTemplate.opsForList();
        List<String> list = new ArrayList<>();
        list.add("sunhan");
        list.add("lisi");
        list.add("xiaoming");

        ops.leftPushAll("list1", list);
        ops.rightPushAll("list2", list);

        List list1 = ops.range("list1", 0, -1);
        for (Object o : list1) {
            log.info("1字段:{}", o);
        }
        List list2 = ops.range("list2", 0, -1);
        for (Object o : list2) {
            log.info("2字段:{}", o);
        }
    }


    @Test
    public void testListPop() {
        ListOperations<String, String> ops = redisTemplate.opsForList();
        // 获取到list的长度
        log.info("list1长度:{}", ops.size("list1"));
        log.info("list2长度:{}", ops.size("list2"));
        // 获取 列表下标的元素，如果下标越界获取的数据为null
        log.info(ops.index("list1", 1));
        // pop取栈头、栈尾
        log.info(ops.leftPop("list2"));
        log.info(ops.rightPop("list2"));

        //
        log.info(ops.remove("list2", 0, "sunhan"));

    }


}

五、发生的问题

• 1、spring-data-redis代码进行存储, 客户端却取不到数据
  
  原因：如果key没做序列化存储，实际存进去的key前面会多几个字符，如果你用redis客户端查询你想要的key，
  最好在程序里对key进行序列化，这样最终的key值才是你想要的key,redisTemplate下面有这两个属性
  

  <property name="keySerializer"> 
  <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> 
  </property> 
  <property name="hashKeySerializer"> 
  <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> 
  </property> 

  springBoot做法:
  

  @Configuration
  public class RedisConfig {
  
      @Bean
      JedisConnectionFactory jedisConnectionFactory() {
          return new JedisConnectionFactory();
      }
  
      @Bean
      public <T> RedisTemplate<String, T> redisTemplate(RedisConnectionFactory factory) {
          RedisTemplate<String, T> template = new RedisTemplate<String, T>();
          template.setConnectionFactory(factory);
  //1.序列化key
          template.setKeySerializer(new StringRedisSerializer());//spring自带
  //2.序列划value
          template.setValueSerializer(new RedisObjectSerializer());//自定义
          return template;
      }
  
  }