JSON parse error: Cannot deserialize instance of `int` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc

代码程序：

@PostMapping("selectById")

@ResponseBody

public Result selectById(@RequestBody int id) {

   Result result =new Result();

   List<User> list = userService.selectById(id);

   if(list.size()==1){

   result.setCode("000");

   result.setMsg("success");

   result.setData(list);

}else if(list.size()==0){

      result.setCode("E01");

      result.setMsg("输入的id找不到有效用户");

      result.setData(null);

   }else {

      result.setCode("E02");

      result.setMsg("输入的id找到大于1个有效用户");

      result.setData(list);

   }

   return result;

}

请求内容：

POST http://localhost:8080/user/selectById

POST data:
{
"id":300
}

返回信息：

{
: "timestamp":"2019-02-08T14:05:17.430+0000",
: "status":400,
: "error":"Bad Request",
: "message":"JSON parse error: Cannot deserialize instance of `int` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `int` out of START_OBJECT token\n at [Source: (PushbackInputStream); line: 1, column: 1]",
: "path":"/user/selectById"
}

用的是post的方式，传的入参是int id，不是一个对象。

需要改成对象，然后获取对象的id

@ApiOperation(value = "根据ID查询用户的信息")

	@PostMapping("selectById")

	@ResponseBody

	public Result selectById(@RequestBody User user) {

		Result result =new Result();

		List<User> list = userService.selectById(user.getId());

		if(list.size()==1){

		result.setCode("000");

		result.setMsg("success");

		result.setData(list);

	}else if(list.size()==0){

			result.setCode("E01");

			result.setMsg("输入的id找不到有效用户");

			result.setData(null);

		}else {

			result.setCode("E02");

			result.setMsg("输入的id找到大于1个有效用户");

			result.setData(list);

		}

		return result;

	}

巴特西

JSON parse error: Cannot deserialize instance of `int` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc

最新文章

热门文章