SpringBoot连接Redis集群

SpringBoot连接Redis集群

1、引入依赖

		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
        </dependency>

​ 2、添加配置

spring:
  application:
    name: redis-cluster
  redis:
    cluster:
      nodes: ${ip}:${port},${ip}:${port}  #自行填充，
      max-redirects: 6  #节点数量
redis:
  timeout: 10000 #客户端超时时间单位是毫秒 默认是2000
  maxIdle: 300 #最大空闲数
  maxTotal: 1000 #控制一个pool可分配多少个jedis实例,用来替换上面的redis.maxActive,如果是jedis 2.4以后用该属性
  maxWaitMillis: 1000 #最大建立连接等待时间。如果超过此时间将接到异常。设为-1表示无限制。
  minEvictableIdleTimeMillis: 300000 #连接的最小空闲时间 默认1800000毫秒(30分钟)
  numTestsPerEvictionRun: 1024 #每次释放连接的最大数目,默认3
  timeBetweenEvictionRunsMillis: 30000 #逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
  testOnBorrow: true #是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
  testWhileIdle: true #在空闲时检查有效性, 默认false
server:
  port: 8001

3、创建配置类

package com.john.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import redis.clients.jedis.JedisPoolConfig;

import java.util.HashSet;
import java.util.Set;

@Configuration
public class JedisConfig {

    @Value("${spring.redis.cluster.nodes}")
    private String clusterNodes;

    @Value("${spring.redis.cluster.max-redirects}")
    private int maxRedirects;

    @Value("${redis.timeout}")
    private int timeout;

    @Value("${redis.maxIdle}")
    private int maxIdle;

    @Value("${redis.maxTotal}")
    private int maxTotal;

    @Value("${redis.maxWaitMillis}")
    private int maxWaitMillis;

    @Value("${redis.minEvictableIdleTimeMillis}")
    private int minEvictableIdleTimeMillis;

    @Value("${redis.numTestsPerEvictionRun}")
    private int numTestsPerEvictionRun;

    @Value("${redis.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;

    @Value("${redis.testOnBorrow}")
    private boolean testOnBorrow;

    @Value("${redis.testWhileIdle}")
    private boolean testWhileIdle;

    /**
     * Redis连接池的配置
     *
     * @return JedisPoolConfig
     */
    @Bean
    public JedisPoolConfig getJedisPoolConfig() {
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        // 最大空闲数
        jedisPoolConfig.setMaxIdle(maxIdle);
        // 连接池的最大数据库连接数
        jedisPoolConfig.setMaxTotal(maxTotal);
        // 最大建立连接等待时间
        jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
        // 逐出连接的最小空闲时间 默认1800000毫秒(30分钟)
        jedisPoolConfig.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        // 每次逐出检查时 逐出的最大数目 如果为负数就是 : 1/abs(n), 默认3
        jedisPoolConfig.setNumTestsPerEvictionRun(numTestsPerEvictionRun);
        // 逐出扫描的时间间隔(毫秒) 如果为负数,则不运行逐出线程, 默认-1
        jedisPoolConfig.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        // 是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
        jedisPoolConfig.setTestOnBorrow(testOnBorrow);
        // 在空闲时检查有效性, 默认false
        jedisPoolConfig.setTestWhileIdle(testWhileIdle);
        return jedisPoolConfig;
    }


    /**
     * Redis集群的配置
     * @return RedisClusterConfiguration
     */
    @Bean
    public RedisClusterConfiguration redisClusterConfiguration() {
        RedisClusterConfiguration redisClusterConfiguration = new RedisClusterConfiguration();
        // Set clusterNodes
        String[] serverArray = clusterNodes.split(",");
        Set<RedisNode> nodes = new HashSet<RedisNode>();
        for (String ipPort : serverArray) {
            String[] ipAndPort = ipPort.split(":");
            nodes.add(new RedisNode(ipAndPort[0].trim(), Integer.valueOf(ipAndPort[1])));
        }
        redisClusterConfiguration.setClusterNodes(nodes);
        redisClusterConfiguration.setMaxRedirects(maxRedirects);
        return redisClusterConfiguration;
    }

    /**
     * redis连接工厂类
     * @return JedisConnectionFactory
     */
    @Bean
    public JedisConnectionFactory jedisConnectionFactory() {
        // 集群模式
        JedisConnectionFactory factory = new JedisConnectionFactory(redisClusterConfiguration(), getJedisPoolConfig());
        return factory;
    }


    /**
     * 实例化 RedisTemplate 对象
     *
     * @return RedisTemplate
     */
    @Bean
    public RedisTemplate<String,Object> redisTemplate() {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        // Template初始化
        initDomainRedisTemplate(redisTemplate);
        return redisTemplate;
    }

    /**
     * 设置数据存入 redis 的序列化方式 使用默认的序列化会导致key乱码
     */
    private void initDomainRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
        // 开启redis数据库事务的支持
        redisTemplate.setEnableTransactionSupport(true);
        redisTemplate.setConnectionFactory(jedisConnectionFactory());

        // 如果不配置Serializer，那么存储的时候缺省使用String，如果用User类型存储，那么会提示错误User can't cast to
        // String！
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        redisTemplate.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        redisTemplate.setHashKeySerializer(stringRedisSerializer);

        // jackson序列化对象设置
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(
                Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // value序列化方式采用jackson
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);

        redisTemplate.afterPropertiesSet();
    }

}

4、controller测试

package com.john.controller;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class JedisController {

    @Resource
    RedisTemplate<String,Object> redisTemplate;

    @PostMapping("/setValue")
    public Object setValue(){
        Object niubi = redisTemplate.opsForValue().get("niubi");
        return niubi;
    }

}

读取之前存储的niubi

@PostMapping("/setValue")
public Object setValue(){
    Object niubi = redisTemplate.opsForValue().get("niubi");
    return niubi;
}