JSR303校验(表单参数校验)

news2024/9/19 10:58:31

1、maven坐标

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
    <version>3.0.1</version>
</dependency>

2、校验规则

3、定义好校验规则还需要开启校验，在controller方法中添加@Validated注解

如下

@PostMapping
@ResponseBody
public CourseBaseInfoDto createCourse(@RequestBody @Validated AddCourseDto addCourseDto){
    Long companyId = 22L;
    CourseBaseInfoDto course = courseBaseService.createCourse(companyId,addCourseDto);
    return course;
}

4、添加规则在实体类上面

package com.xuechengpluscontent.dto;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Size;
import java.math.BigDecimal;

/**
 * @description 添加课程dto
 * @author Mr.M
 * @date 2022/9/7 17:40
 * @version 1.0
 */
@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666")
 @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")
 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;
}

5、编写统一异常处理类

@ResponseBody
@ExceptionHandler(MethodArgumentNotValidException.class)
@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
public RestErrorResponse ValidException(MethodArgumentNotValidException e){
    BindingResult bindingResult = e.getBindingResult();
    StringBuffer errMsg=new StringBuffer();
    List<FieldError> fieldErrors = bindingResult.getFieldErrors();
    for (FieldError fieldError : fieldErrors) {
        errMsg.append(fieldError.getDefaultMessage());
    }
    log.info(errMsg.toString());
    System.out.println(errMsg.toString());
    return new RestErrorResponse(errMsg.toString());
}