springboot注解校验参数

 

 

 

 

 

实例

基本应用

引入依赖

?

1 2 3 4

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

　

 

Controller 中需要校验的参数Bean前添加Validated

public ResultVO updateSysUser(@RequestBody @Validated(Groups.Update.class) SysUserIPt sysUserIPt) {
        String token = request.getHeader(CommonConstant.ACCESS_TOKEN);
        SysUser userInfo = (SysUser)redisService.get(CommonConstant.PREFIX_USER_INFO+token);
        SysUser sysUser = BeanConvertor.convertBean(sysUserIPt,SysUser.class);
        try {
            int count = sysUserService.updateSysUser(sysUser,userInfo);
        } catch (Exception e) {
            e.printStackTrace();
            return ResultVO.vo(ResultCode.ERROR,e.getMessage());
        }
        SysUserIPo sysUserIPo = BeanConvertor.convertBean(sysUser, SysUserIPo.class);
        return ResultVO.vo(sysUserIPo);
    }

给参数对象添加校验注解

  /**
     * 用户ID
     */
      @NotEmpty(message = "用户id不能为空" , groups = Groups.Update.class)
        private String userId;

      /**
     * 部门ID
     */
      @NotEmpty(message = "部门ID不能为空",groups = Groups.Add.class)
      @NotEmpty(message = "部门ID不能为空",groups = Groups.Update.class)
      private String deptId;

      /**
     * 登录账号
     */
      @NotEmpty(message = "登录账号不能为空",groups = Groups.Add.class)
      @NotEmpty(message = "登录账号不能为空",groups = Groups.Update.class)
      private String loginName;

异常的统一处理

参数校验不通过时，会抛出 BingBindException 异常，可以在统一异常处理中，做统一处理。

/**
     * 方法参数错误异常
     * @param e
     * @return
     */
    @ExceptionHandler({MethodArgumentNotValidException.class,BindException.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public ResultVO<Object> MethodArgumentNotValidExceptionHandler(Exception e) {
        log.error("参数异常");
        BindingResult bindingResult = null;
        Map map = new HashMap<>();
        if (e instanceof MethodArgumentNotValidException) {
            bindingResult = ((MethodArgumentNotValidException)e).getBindingResult();
        } else if (e instanceof BindException) {
            bindingResult = ((BindException)e).getBindingResult();
        }
        bindingResult.getFieldErrors().forEach((fieldError)->
                map.put(fieldError.getField(),fieldError.getDefaultMessage())
        );
        return ResultVO.vo( ResultCode.VALIDATE_FAILED  , map);
    }

然后加上分组校验

public class Groups {
    public interface Add{}
    public interface  Update{}
}
就成功了