Springboot2.X集成redis集群(Lettuce)连接

1.前言

搭建好redis集群环境，如图:

2.导入依赖

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

3. 配置application.properties

spring:
  # Redis 配置信息
  redis:
    timeout: 6000
    cluster:
      nodes: 172.81.235.217:7001,172.81.235.217:7002,172.81.235.217:7003,172.81.235.217:7004,172.81.235.217:7005,172.81.235.217:7006
    ###################以下为lettuce连接池增加的配置###########################
    lettuce:
      pool:
        max-active:  100 # 连接池最大连接数（使用负值表示没有限制）
        max-idle: 100 # 连接池中的最大空闲连接
        min-idle: 50 # 连接池中的最小空闲连接
        max-wait: 10000 # 连接池最大阻塞等待时间（使用负值表示没有限制

4.新建下面的两个配置类

package com.micro.config;

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.MapPropertySource;
import org.springframework.data.redis.connection.RedisClusterConfiguration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisSentinelConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;

import java.util.Set;

/**
 * @BelongsProject: MicroService
 * @BelongsPackage: com.micro.config
 * @CreateTime: 2020-11-25 09:28
 * @Description: TODO
 */
@Configuration
@ConfigurationProperties(prefix = "spring.redis.cluster")
public class RedisClusterConfig {

    private Set<String> nodes;
    private String master;

    @Value("${spring.redis.timeout}")
    private long timeout;
    @Value("${spring.redis.lettuce.pool.max-idle}")
    private int maxIdle;
    @Value("${spring.redis.lettuce.pool.min-idle}")
    private int minIdle;
    @Value("${spring.redis.lettuce.pool.max-wait}")
    private long maxWait;
    @Value("${spring.redis.lettuce.pool.max-active}")
    private int maxActive;

    /**
     * 创建一个Redis连接工厂
     * @return
     */
    @Bean
    public RedisConnectionFactory lettuceConnectionFactory() {

        RedisClusterConfiguration redisClusterConfiguration= new RedisClusterConfiguration(nodes);

        GenericObjectPoolConfig genericObjectPoolConfig = new GenericObjectPoolConfig();
        genericObjectPoolConfig.setMaxIdle(maxIdle);
        genericObjectPoolConfig.setMinIdle(minIdle);
        genericObjectPoolConfig.setMaxTotal(maxActive);
        genericObjectPoolConfig.setMaxWaitMillis(maxWait);

        LettucePoolingClientConfiguration lettuceClientConfiguration = LettucePoolingClientConfiguration.builder()
                .poolConfig(genericObjectPoolConfig)
                .build();
        return new LettuceConnectionFactory(redisClusterConfiguration, lettuceClientConfiguration);
    }



    public void setNodes(Set<String> nodes) {
        this.nodes = nodes;
    }

    public void setMaster(String master) {
        this.master = master;
    }
}

package com.micro.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

/**
 * @BelongsProject: MicroService
 * @BelongsPackage: com.micro.config
 * @CreateTime: 2020-11-25 09:33
 * @Description: TODO
 */
@Configuration
public class RedisTemplateConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory factory) {
        //创建Json序列化对象
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(Object.class);

        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // 将默认序列化改为Jackson2JsonRedisSerializer序列化
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setKeySerializer(jackson2JsonRedisSerializer);// key序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);// value序列化
        template.setConnectionFactory(factory);
        template.afterPropertiesSet();
        return template;
    }
}

5.执行测试

@SpringBootTest
@RunWith(SpringRunner.class)
public class RedisConfigurationTest {

@Autowired
private RedisTemplate redisTemplate;

  @Test
  public void redisTemplate() throws Exception {
  
          redisTemplate.opsForValue().set("author", "Damein_xym");
  }

}