content: package cn.datax.common.redis.config;
  
  import cn.datax.common.redis.service.DistributedLock;
  import cn.datax.common.redis.service.RedisService;
  import com.fasterxml.jackson.annotation.JsonAutoDetect;
  import com.fasterxml.jackson.annotation.JsonInclude;
  import com.fasterxml.jackson.annotation.JsonTypeInfo;
  import com.fasterxml.jackson.annotation.PropertyAccessor;
  import com.fasterxml.jackson.databind.DeserializationFeature;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.SerializationFeature;
  import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
  import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
  import org.springframework.context.annotation.Bean;
  import org.springframework.data.redis.connection.RedisConnectionFactory;
  import org.springframework.data.redis.core.*;
  import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
  import org.springframework.data.redis.serializer.RedisSerializer;
  import org.springframework.data.redis.serializer.StringRedisSerializer;
  
  @ConditionalOnClass(RedisOperations.class)
  public class RedisConfig {
  
      /**
       * 自定义redis序列化的机制,重新定义一个ObjectMapper.防止和MVC的冲突
       *
       * @return
       */
      @Bean
      public RedisSerializer<Object> redisSerializer() {
          ObjectMapper objectMapper = new ObjectMapper();
          // null数据不返回
          objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
          objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
          //反序列化时候遇到不匹配的属性并不抛出异常
          objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
          //序列化时候遇到空对象不抛出异常
          objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
          //反序列化的时候如果是无效子类型,不抛出异常
          objectMapper.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, false);
          //不使用默认的dateTime进行序列化,
          objectMapper.configure(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS, false);
          //使用JSR310提供的序列化类,里面包含了大量的JDK8时间序列化类
          objectMapper.registerModule(new JavaTimeModule());
          //启用反序列化所需的类型信息,在属性中添加@class
          objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
          //配置null值的序列化器
          GenericJackson2JsonRedisSerializer.registerNullValueSerializer(objectMapper, null);
          return new GenericJackson2JsonRedisSerializer(objectMapper);
      }
  
      /**
       * 实例化 RedisTemplate 对象
       *
       * @return
       */
      @Bean(name = "redisTemplate")
      public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory, RedisSerializer<Object> redisSerializer) {
          RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
          redisTemplate.setConnectionFactory(redisConnectionFactory);
          redisTemplate.setDefaultSerializer(redisSerializer);
          redisTemplate.setValueSerializer(redisSerializer);
          redisTemplate.setHashValueSerializer(redisSerializer);
          redisTemplate.setKeySerializer(StringRedisSerializer.UTF_8);
          redisTemplate.setHashKeySerializer(StringRedisSerializer.UTF_8);
          redisTemplate.afterPropertiesSet();
          return redisTemplate;
      }
  
      @Bean
      @ConditionalOnBean(name = "redisTemplate")
      public RedisService redisService() {
          return new RedisService();
      }
  
      @Bean
      @ConditionalOnBean(name = "redisTemplate")
      public DistributedLock distributedLock() {
          return new DistributedLock();
      }
  }