Springboot整合redis

Springboot 整合redis

• 在pom.xml文件中导入依赖

<!-- redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
​
<!-- spring2.X集成redis所需common-pool2-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.6.0</version>
</dependency>

• 在application.properties 配置redis配置

  #Redis服务器地址
  spring.redis.host=xxx.xxx.xxx.xxx  // 自己redis的ip地址
  #Redis服务器连接端口
  spring.redis.port=6379
  #Redis数据库索引（默认为0）
  spring.redis.database= 0
  #连接超时时间（毫秒）
  spring.redis.timeout=1800000
  #连接池最大连接数（使用负值表示没有限制）
  spring.redis.lettuce.pool.max-active=20
  #最大阻塞等待时间(负数表示没限制)
  spring.redis.lettuce.pool.max-wait=-1
  #连接池中的最大空闲连接
  spring.redis.lettuce.pool.max-idle=5
  #连接池中的最小空闲连接
  spring.redis.lettuce.pool.min-idle=0
  

• 添加 redis配置类

  @EnableCaching
  @Configuration
  public class RedisConfig extends CachingConfigurerSupport {
  ​
      @Bean
      public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
          RedisTemplate<String, Object> template = new RedisTemplate<>();
          RedisSerializer<String> redisSerializer = new StringRedisSerializer();
          Jackson2JsonRedisSerializer 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);
          template.setConnectionFactory(factory);
  //key序列化方式
          template.setKeySerializer(redisSerializer);
  //value序列化
          template.setValueSerializer(jackson2JsonRedisSerializer);
  //value hashmap序列化
          template.setHashValueSerializer(jackson2JsonRedisSerializer);
          return template;
      }
  ​
      @Bean
      public CacheManager cacheManager(RedisConnectionFactory factory) {
          RedisSerializer<String> redisSerializer = new StringRedisSerializer();
          Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(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);
  // 配置序列化（解决乱码的问题）,过期时间600秒
          RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                  .entryTtl(Duration.ofSeconds(600))
                  .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                  .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                  .disableCachingNullValues();
          RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                  .cacheDefaults(config)
                  .build();
          return cacheManager;
      }
  }
  

  在配置上面config的时候也需要在pom.xml 文件中引入相关依赖

  <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.12.1</version>
      </dependency>
      <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.11.4</version>
      </dependency>
      <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.11.4</version>
  </dependency>