SpringBoot注解验证参数

亦凉 2023-07-15 09:26 53阅读 0赞

*  SpringBoot注解验证参数  
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 *  使用实例
    
        public class Test { 
          
              @NotNull(message = "ID不能为空")
              @Range(min = 1, max = 100, message = "ID必须在1到100之间")
              private Integer id;
          
              @NotBlank(message = "姓名不能为空")
              @Length(min = 2, max = 6, message = "姓名必须在2到6位之间")
              private String name;
          
              @NotNull(message = "余额不能为空")
              @DecimalMax(value = "30.50", message = "余额不能超过30.5")
              @DecimalMin(value = "1.50", message = "余额不能低于1.5")
              private BigDecimal amount;
          
              @NotNull(message = "生日不能为空")
              @Past(message = "生日必须是过去")
              private Date birthday;
          
              @NotBlank(message = "邮箱不能为空")
              @Email(message = "邮箱格式不正确")
              private String email;
          
              @NotBlank(message = "手机号不能为空")
              @Pattern(regexp = "^(((13[0-9])|(14[579])|(15([0-3]|[5-9]))|(16[6])|(17[0135678])|(18[0-9])|(19[89]))\\d{8})$", message = "手机号格式错误")
              private String phone;
          
          }
 *  然后在controller的每个接口中使用@Validated和BindingResult类;@Validated注解用于验证一个入参，验证之后的消息绑定到BindingResult类中：

@PostMapping("/test")
        @ApiOperation(value = "测试", notes = "", response = Result.class)
        public Result test(@ApiParam(name = "test", value = "参数", required = true) @Validated @RequestBody Test test, BindingResult bindingResult) { 
            if(bindingResult.hasErrors()){ 
                String errorMsg = bindingResult.getFieldError().getDefaultMessage();
                return Result.error(errorMsg);
            }
            return Result.ok("参数验证通过");
        }

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