[org.springframework.http.converter.HttpMessageNotReadableException: Required request body is missing

 这是因为@RequestBody 不支持get方法所致

@GetMapping("/doQuery")
public RespPageBean getUsersByPage(@RequestParam(defaultValue = "1") Integer page, @RequestParam(defaultValue = "10") Integer size, @RequestBody User user)
{
    return userService.getUsers(page,size,user);
}

改成 @RequestMapping("/doQuery")即可