@Validated分组校验及扩展
一、介绍
在springBoot
项目中,我们往往要对参数进行校验,如果在代码中进行,就会显得很杂乱冗余
我在以前有介绍过@Valid
注解的使用和扩展
但上面这篇文章整理相关的知识点有局限性,主要体现在以下方面
- 没有分组校验
- 没有嵌套校验
- 校验都是针对一个字段的,没有多个字段之间关联的校验;比如说开始日期必须小于结束日期
故此,得使用@Validated
来进行完善校验。
二、使用
1)分组校验
package com.banmoon.test.controller;
import com.banmoon.test.dto.ResultData;
import com.banmoon.test.obj.request.ValidGroupRequest;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* 分组校验
*
* @author banmoon
*/
@Validated
@RestController
@RequestMapping("/valid")
public class ValidController {
@GetMapping("/group/save")
public ResultData<Void> groupSave(@Validated({ValidGroupRequest.DefaultGroup.class,
ValidGroupRequest.SaveGroup.class}) ValidGroupRequest request) {
return ResultData.success();
}
@GetMapping("/group/update")
public ResultData<Void> groupUpdate(@Validated({ValidGroupRequest.DefaultGroup.class,
ValidGroupRequest.UpdateGroup.class}) ValidGroupRequest request) {
return ResultData.success();
}
}
请求类ValidGroupRequest.java
package com.banmoon.test.obj.request;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Null;
/**
* 分組校验请求-入参
*
* @author banmoon
*/
@Data
@NoArgsConstructor
@ApiModel("分組校验请求-入参")
public class ValidGroupRequest {
public interface DefaultGroup {
}
public interface SaveGroup {
}
public interface UpdateGroup {
}
@NotNull(message = "ID不能为空", groups = UpdateGroup.class)
@ApiModelProperty("ID")
private Integer id;
@NotBlank(message = "姓名不能为空", groups = DefaultGroup.class)
@ApiModelProperty("姓名")
private String name;
@Null(message = "性别不能修改", groups = UpdateGroup.class)
@NotNull(message = "性别不能为空", groups = SaveGroup.class)
@ApiModelProperty("性别,1=男,2=女")
private Integer sex;
}
分别请求两个接口,且里面的都不满足
调用/valid/group/save | 调用/valid/group/update |
https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200930.png https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200935.png
在开发中,我不太喜欢这种公用一个请求类的写法。 以为这样每一个需要校验的字段,都需要加上一个group
,会写很多很麻烦 这样我还不如,复制粘贴再写一个请求类,从而达到分组的校验效果
2)嵌套校验
package com.banmoon.test.controller;
import com.banmoon.test.dto.ResultData;
import com.banmoon.test.obj.request.ValidBatchSaveRequest;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import java.util.List;
/**
* Valid 校验
*
* @author banmoon
*/
@Validated
@RestController
@RequestMapping("/valid")
public class ValidController {
@PostMapping("/batchSave")
public ResultData<Void> batchSave(@NotEmpty(message = "参数不能为空") @RequestBody List<@Valid ValidBatchSaveRequest> request) {
return ResultData.success();
}
@DeleteMapping("/batchDelete")
public ResultData<Void> batchDelete(@NotEmpty(message = "参数不能为空") @RequestBody List<@NotNull(message = "id不能为空") Integer> idList) {
return ResultData.success();
}
}
对应的请求类,ValidBatchSaveRequest.java
package com.banmoon.test.obj.request;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
/**
* @author banmoon
*/
@Data
@NoArgsConstructor
@ApiModel("嵌套校验-入参")
public class ValidBatchSaveRequest {
@NotBlank(message = "姓名不能为空")
@ApiModelProperty("姓名")
private String name;
@NotNull(message = "性别不能为空")
@ApiModelProperty("性别,1=男,2=女")
private Integer sex;
}
请求/valid/batchSave
时,两种情况
当外部的List校验失败时 | 内部的类校验失败时 |
https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200916.png https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200920.png
请求/valid/batchDelete
时,也是两种情况
当外部的List校验失败时 | 内部的包装类校验失败时 |
https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200903.png https://banmoon-pic.oss-cn-guangzhou.aliyuncs.com/images/20230131200907.png
如果请求类中还有其它的,需要校验的实体类,则在上面打上一个@Valid
注解即可 由于List
集合有点特殊,它需要在指定泛型的地方打上@Valid
,这样才可以对集合中的每一个对象进行校验
3)多字段联动校验
如何进行多字段之间的联动校验,就像开头讲到的那个例子一样,开始日期必须小于结束日期,
这样如何使用@Valid
进行联动校验呢,我们只需要这样
package com.banmoon.test.controller;
import com.banmoon.test.dto.ResultData;
import com.banmoon.test.obj.request.ValidFieldRelevanceRequest;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.validation.Valid;
/**
* Valid 校验
*
* @author banmoon
*/
@Validated
@RestController
@RequestMapping("/valid")
public class ValidController {
@PostMapping("/fieldRelevance")
public ResultData<Void> fieldRelevance(@Valid ValidFieldRelevanceRequest request) {
return ResultData.success();
}
}
重点是里面这个校验注解
package com.banmoon.test.obj.request;
import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.validation.constraints.AssertTrue;
import javax.validation.constraints.NotNull;
import java.util.Date;
/**
* 字段关联校验
*
* @author banmoon
*/
@Data
@NoArgsConstructor
@ApiModel("字段关联校验-入参")
public class ValidFieldRelevanceRequest {
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
@NotNull(message = "开始时间不能为空")
@ApiModelProperty("开始时间")
private Date beginDate;
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
@NotNull(message = "结束时间不能为空")
@ApiModelProperty("结束时间")
private Date endDate;
@AssertTrue(message = "结束时间必须大于开始时间")
@ApiModelProperty(hidden = true)
public boolean getValid() {
return this.beginDate.compareTo(endDate) < 0;
}
}
请求查看效果
三、最后
我是半月,你我一同共勉!!!