SpringBoot基于Hibernate Validator的JSR303校验

1. 加入依赖

      <dependency>
               <groupId>org.springframework.bootgroupId>
               <artifactId>spring-boot-starter-validationartifactId>
           dependency>
   

2. 在实体类的属性中使用注解设置参数校验

   @Data
   @ApiModel(value="AddCourseDto", description="新增课程基本信息")
   public class AddCourseDto {
   
    @NotEmpty(message = "课程名称不能为空")
    @ApiModelProperty(value = "课程名称", required = true)
    private String name;
   
    @NotEmpty(message = "适用人群不能为空")
    @Size(message = "适用人群内容过少",min = 10)
    @ApiModelProperty(value = "适用人群", required = true)
    private String users;
   
    @ApiModelProperty(value = "课程标签")
    private String tags;
   
    @NotEmpty(message = "课程分类不能为空")
    @ApiModelProperty(value = "大分类", required = true)
    private String mt;
   
    @NotEmpty(message = "课程分类不能为空")
    @ApiModelProperty(value = "小分类", required = true)
    private String st;
   
    @NotEmpty(message = "课程等级不能为空")
    @ApiModelProperty(value = "课程等级", required = true)
    private String grade;
   
    @ApiModelProperty(value = "教学模式（普通，录播，直播等）", required = true)
    private String teachmode;
   
    @ApiModelProperty(value = "课程介绍")
    @Size(message = "课程描述内容过少",min = 10)
    private String description;
   
    @ApiModelProperty(value = "课程图片", required = true)
    private String pic;
   
    @NotEmpty(message = "收费规则不能为空")
    @ApiModelProperty(value = "收费规则，对应数据字典", required = true)
    private String charge;
   
    @ApiModelProperty(value = "价格")
    private Float price;
    @ApiModelProperty(value = "原价")
    private Float originalPrice;
   
   
    @ApiModelProperty(value = "qq")
    private String qq;
   
    @ApiModelProperty(value = "微信")
    private String wechat;
    @ApiModelProperty(value = "电话")
    private String phone;
   
    @ApiModelProperty(value = "有效期")
    private Integer validDays;
   }
   
   

3. 在controller方法参数中使用 @Validated使校验生效

   public CourseBaseInfoDto createCourseBase(@RequestBody @Validated AddCourseDto addCourseDto)
   

4. 在全局异常中对JSR303错误信息解析

    //JSR303校验框架异常解析
       @ExceptionHandler(MethodArgumentNotValidException.class)
       @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
       public RestErrorResponse  methodArgumentNotValidException(MethodArgumentNotValidException exception){
   
           BindingResult bindingResult = exception.getBindingResult();
           //存储错误信息
           List<String> errors = new ArrayList<>();
           bindingResult.getFieldErrors().stream().forEach(item->{
               errors.add(item.getDefaultMessage());
           });
   
           //将list中的错误信息拼接起来
           String errMessage = StringUtils.join(errors, ",");
           //记录异常日志
           log.error("JSR303参数验证异常{}",exception.getMessage(),errMessage);
   
           //解析出异常信息
           RestErrorResponse restErrorResponse = new RestErrorResponse(errMessage);
           return restErrorResponse;
       }
   

5. 多个接口共用一个模型类：分组校验 定义一些常用组

   /**
    * @version 1.0
    * @Author zhaozhixin
    * @Date 2023/4/17 23:49
    * @注释 用于分级校验，定义一些常用的组
    */
   public class ValidationGroups {
       public interface Insert{};
       public interface Update{};
       public interface Delete{};
   }
   
   

6. 在模型类的属性的验证注解中增加groups属性：示例

    @NotEmpty(message = "课程名称不能为空",groups ={ValidationGroups.Insert.class} )
    @NotEmpty(message = "课程名称不能为空",groups ={ValidationGroups.Update.class} )
    @ApiModelProperty(value = "课程名称", required = true)
    private String name;
   

7. 在接口的@Validated注解中指定是哪个组

   @PostMapping("/course")public CourseBaseInfoDto createCourseBase(@RequestBody @Validated(ValidationGroups.Insert.class) AddCourseDto addCourseDto)