SpringBoot @Validated注解实现参数分组校验的方法实例

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

@Data
public class LoginVo {

 @ApiModelProperty(value = "用户名称")
 @NotEmpty(message = "用户名不能为空！",groups = LoginModel.class)
 @NotEmpty(message = "添加时用户名不能为空！",groups = SaveModel.class)
 private String userName;

 @ApiModelProperty(value = "密码")
 @Size(min = 2,message = "密码最少为2位",groups = LoginModel.class)
 @Size(min = 6,message = "密码最少为6位",groups = SaveModel.class)
 private String password;
}

import javax.validation.groups.Default;
public interface LoginModel extends Default {
}

import javax.validation.groups.Default;
public interface SaveModel extends Default{
}

 @ApiOperation(value = "登录以后返回token")
  @PostMapping(value = "/login")
  public Result login(@RequestBody @Validated(LoginModel.class) LoginVo loginVo) {
    String token = userService.login(loginVo.getUserName(), loginVo.getPassword());
    return Result.success(token);
  }

@RestControllerAdvice
@Slf4j
public class ParameterCalibration {

  @ExceptionHandler({MethodArgumentNotValidException.class, BindException.class})
  @ResponseStatus(HttpStatus.OK)
  @ResponseBody
  public Result handleMethodArgumentNotValidException(Exception exception) {
    StringBuilder errorInfo = new StringBuilder();
    BindingResult bindingResult=null;
    if(exception instanceof MethodArgumentNotValidException){
      bindingResult= ((MethodArgumentNotValidException)exception).getBindingResult();
    }
    if(exception instanceof BindException){
      bindingResult= ((BindException)exception).getBindingResult();
    }
    for(int i = 0; i < bindingResult.getFieldErrors().size(); i++){
      if(i > 0){
        errorInfo.append(",");
      }
      FieldError fieldError = bindingResult.getFieldErrors().get(i);
      errorInfo.append(fieldError.getField()).append(" :").append(fieldError.getDefaultMessage());
    }
    log.error(errorInfo.toString());
    //这里返回自己的Result的结果类。
    return Result.validateFailed(errorInfo.toString());
  }

  @ExceptionHandler(Exception.class)
  @ResponseStatus(HttpStatus.BAD_REQUEST)
  @ResponseBody
  public Result handleDefaultException(Exception exception) {
    log.error(exception.toString());
     //这里返回自己的Result的结果类。
    return Result.validateFailed("服务器错误",exception);
  }
}