spring web ResponseEntity 无法序列化

Question

如果使用@Cacheable 作为返回值'ResponseEntity'，我会遇到序列化错误。

Caused by: org.springframework.data.redis.serializer.SerializationException: Cannot serialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to serialize object using DefaultSerializer; nested exception is java.lang.IllegalArgumentException: DefaultSerializer requires a Serializable payload but received an object of type [org.springframework.http.ResponseEntity]

演示:

@Controller
@CacheConfig(cacheNames = "logs")
public class LogController {
  @Cacheable(key = "#id")
  @RequestMapping(value = LogConstants.LOGS_ID_PATH, method = RequestMethod.GET)
  public ResponseEntity<Log> findById(@PathVariable Long id) {
   //....
  }
}

Answer 1

缓存对象应该是 Serializable 但 ResponseEntity 不是 Serializable。

您可以在不同级别添加缓存，这样就可以使返回类型可序列化或添加一些能够保存 ResponseEntity

的客户序列化器/反序列化器