Springboot校验器

添加依赖

implementation 'org.springframework.boot:spring-boot-starter-validation'

Controller层

@Api(tags = "用户相关接口")
@RestController
@RequestMapping("/user")
@Slf4j
@Validated //注意这个注解
public class UserController {

方法

 @ApiOperation(value = "用户登录")
@PostMapping(value = "/modify")
public ApiResponse modifyUser( @RequestBody  @Valid  RequestUserInfo userInfo) {
        log.info(JSON.toJSONString(userInfo));
        return ApiResponse.success("提交成功");
    }

对象

@Data
@NoArgsConstructor
@AllArgsConstructor

public class RequestUserInfo {
    @NotBlank(message = "姓名不能为空")
    private String name;
    @NotBlank(message = "身份证不能为空")
    private String idCardNum;
    @NotBlank(message = "出生日期不能为空")
    private String birthDay;
}

以上三个缺一不可