global-result-handler | 极致优雅！零侵入的全局异常处理、接口参数校验、错误码、统一响应格式解决方案

/**
 * class {@code ExampleController} 使用案例的Controller.
 *
 * @author feiniaojin
 */
@Controller
@RequestMapping("/example")
@Slf4j
@Validated
@Api("ExampleController")
public class ExampleController {

  @Resource
  private ExampleService exampleSer  

@GetMapping
@ResponseBody
public Result GeneralPageQuery(Parameter params) {
    
    Result result = new Result();
    //TODO 1.校验params参数，非空校验、长度校验
    try{
        //TODO 2.调用Service的一系列操作
        //TODO 3.将操作结果设置到result对象中
    }catch(Exception e)  

@Data
public class RequestDTO {

    @NotNull(message = "userId is null ")
    private Long userId;

    @NotNull(message = "userName is null ")
    @Length(min = 6, max = 12)
    private String userName;

    @NotNull(message = "age is null ")
    @