org.springframework.validation.BeanPropertyBindingResult

环境

springboot 2.4.1

validation 效验post or get 方式表单方式提交转对象，效验出错，不进   MethodArgumentNotValidException    or    ConstraintViolationException   异常处理。进全局异常处理

异常

org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'testBean' on field 'uid': rejected value [1]; codes [Null.testBean.uid,Null.uid,Null.java.lang.Integer,Null]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [testBean.uid,uid]; arguments []; default message [uid]]; default message [自增ID，不能指定]

bean

@Data
public class TestBean {
    @ApiModelProperty("自增id")
    @Null(message = "自增ID，不能指定")
    private Integer uid;
 
    @ApiModelProperty("名称")
    @NotBlank
    private String username;
    @ApiModelProperty("地址")
    @NotBlank(message = "地址不能为空")
    private String address;
}

Controller 

    //不管是get还是post 一样
    @PostMapping("/insert3")
    public R insert3(@Valid  TestBean testBean ) {
        return success(testBean.toString());
    }

解决方法

方法一  org.springframework.validation.BindException

    @ExceptionHandler(BindException.class)
    public R handleValidation(BindException e) {
        System.out.println("BindException");
        for (ObjectError error : e.getBindingResult().getAllErrors()) {
            return R.failed(error.getDefaultMessage());
        }
        return R.failed("请求参数有误");
    }

方法二

    //方法中加入BindingResult ，效验错误进入ConstraintViolationException
    @PostMapping("/insert3")   
    public R insert3(@Valid  TestBean testBean , BindingResult bindingResult) {
        return success(testBean.toString());
    }