查询参数中的java spring boot offsetDateTime

Question

我尝试创建以下api：

    @GetMapping("/workerslist")
    public List<Worker> getWorkersList(
            @RequestParam(name = "lastPollBefore", required = false) OffsetDateTime lastPollBefore,
            @RequestParam(name = "lastPollAfter", required = false) OffsetDateTime lastPollAfter){
        return workerService.getWorkers(lastPollBefore, lastPollAfter);
    }

但当我调用它时，我得到以下错误：

{
  "_type": "ValidationError",
  "key": "validation-error",
  "message": "Failed to convert value of type 'java.lang.String' to required type 'java.time.OffsetDateTime'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam java.time.OffsetDateTime] for value '2020-07-01T11:52:57.152Z'; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [2020-07-01T11:52:57.152Z]",
  "constraints": [
    
  ]
}

我找到了localDateTime的解决方案，但它们似乎不适用于offsetDateTime

Answer 1

您需要为控制器中的OffsetDateTime参数添加@DateTimeFormat注释。例如

    @GetMapping("/workerslist")
    public List<Worker> getWorkersList(
            @RequestParam(name = "lastPollBefore", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)OffsetDateTime lastPollBefore,
            @RequestParam(name = "lastPollAfter", required = false) @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)OffsetDateTime lastPollAfter){
        return workerService.getWorkers(lastPollBefore, lastPollAfter);
    }

您可能想用自己的自定义映射器覆盖Spring的默认对象映射器

比如：

@Configuration
public class JsonConfiguration {

  private static final ObjectMapper OBJECT_MAPPER =
      new ObjectMapper().registerModule(new JavaTimeModule())
          .disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
          .disable(DeserializationFeature.ADJUST_DATES_TO_CONTEXT_TIME_ZONE)
          .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

  @Bean
@Primary
  public static ObjectMapper getObjectMapper() {
    return OBJECT_MAPPER;
  }
}