REST中的@DateTimeFormat变量为空

Question

我已经看到了如何在Spring中使用LocalDateTime RequestParam？我得到“未能将字符串转换为LocalDateTime”，但我仍然有问题。

因此编写一个具有rest API的Spring Boot应用程序。

@RequestMapping(value = "/api/v1/climates/locationdates/{location}/{sdate}/{edate}", method = RequestMethod.GET)
   public ResponseEntity<Object> getClimate(@PathVariable("location") long location,
                                             @DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss") LocalDateTime sdate, 
                                             @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime edate) {
      System.out.println("CONTROLLER location is " + location + " start is " + sdate + " end is " + edate);           
      return new ResponseEntity<>(climateService.getClimatesByLocationAndDates(location, sdate, edate), HttpStatus.OK);
   }

{“时间戳”：“2019-12-19T11:05:21.707+0000”,“状态”：500,“错误”：“内部服务器错误”,“消息”：“值不得为空！；嵌套异常为java.lang.IllegalArgumentException：值不得为空！”,“路径”：“/API/V1/Climates/LocationDates/1/2019-12-17T11:30:00/2019-12-17T11:55:00”}

在日志中

控制器位置为1开始为null结束为null

@Id
@GeneratedValue(strategy = GenerationType.AUTO, generator = "climate_gen")
private long id;

private float temperature;
private float humidity;
@JsonFormat(shape=JsonFormat.Shape.STRING, pattern="yyyy-MM-dd'T'HH:mm:ss")
private LocalDateTime date;
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "location_id", nullable = false)
private Location location;

Answer 1

将@pathvariable添加到sdate和edate以访问url中的值，如下所示：

@RequestMapping(value = "/api/v1/climates/locationdates/{location}/{sdate}/{edate}", method = RequestMethod.GET)
    public ResponseEntity<Object> getClimate(@PathVariable("location") long location,
            @PathVariable("sdate") @DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss") LocalDateTime sdate,
            @PathVariable("edate") @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) LocalDateTime edate) {

         System.out.println("CONTROLLER location is " + location + " start is " + sdate + " end is " + edate);           
         return new ResponseEntity<>(climateService.getClimatesByLocationAndDates(location, sdate, edate), HttpStatus.OK);
   }