Spring注解之@validated使用
概念
spring-boot中可以用@validated来校验数据，如果数据异常则会统一抛出异常，方便异常中心统一处理。
注解源码：
@Validated 作用在类、方法和参数上
@Target({ElementType.TYPE, ElementType.METHOD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface Validated {
Class<?>[] value() default {};
}
依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>spring-boot-starter-web已经引入了基础包，所以直接使用就可以了，没必要单独引入此依赖
使用（在controller中使用）
方法接收参数的实体类上使用
@ApiOperation("注册接口(账户、昵称不能重复)[不需要token]")
@PostMapping("register")
public ResponseVO<Object> register(@RequestBody @Validated RegisterDTO registerDTO) throws InterruptedException {
log.info("请求接口 /netsadcloud/user/register 参数：{}", JSON.toJSONString(registerDTO));
return userService.register(registerDTO);
}实体类
@ApiModel("注册DTO")
@Data
public class RegisterDTO {
@ApiModelProperty(value = "账户(小于等于12位,大于等于8位字符)", required = true)
@Size(max = 12,min = 8)
@NotBlank
private String account;
@ApiModelProperty(value = "密码(小于等于12位,大于等于8位字符)", required = true)
@Size(max = 12,min = 8)
@NotBlank
private String password;
@ApiModelProperty(value = "昵称(小于等于12位,大于等于8位字符)", required = true)
@Size(max = 12,min = 8)
@NotBlank
private String name;
}常用注解类型
注意，不要错用了异常类型，比如在int上不可用@size，常用注解如下：
PS：spring@Validated校验用法
1、controller添加注解
public BaseResponse addOrUpdateUnit(@RequestBody @Validated RiskUnitDto riskUnitDto) {
doublePreventDataService.addOrUpdateUnit(riskUnitDto);
return BaseResponse.success(null);
}2、参数对象添加注解
package com.cosmo.hg.synctask.dto;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.experimental.Delegate;
import org.hibernate.validator.constraints.Range;
import javax.validation.Valid;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.math.BigDecimal;
import java.util.List;
@Data
@ApiModel(value = "RiskUnitDto对象", description = "风险分析单元新增/编辑请求类")
public class RiskUnitDto {
@Size(max = 32,message = "sign不能超过32个字符")
@ApiModelProperty(value = "标识",required = true)
@NotBlank(message = "sign不能为空")
private String sign;
@Valid
@ApiModelProperty(value = "风险分析单元对象数据",required = true)
private List<RiskUnitData> data;
@Data
public static class RiskUnitData{
@ApiModelProperty(value = "主键id",required = true)
@NotNull(message = "风险分析单元id不能为空")
private Long id;
@ApiModelProperty(value = "风险分析对象id",required = true)
@NotNull(message = "风险分析对象id不能为空")
private Long riskObjectId;
@ApiModelProperty(value = "分析单元名称",required = true)
@NotBlank(message = "分析单元名称不能为空")
@Size(max = 50,message = "分析单元名称不能超过50个字符")
private String riskUnitName;
@ApiModelProperty(value = "经度",required = true)
@NotNull(message = "经度不能为空")
private BigDecimal longitude;
@NotNull(message = "纬度不能为空")
@ApiModelProperty(value = "纬度",required = true)
private BigDecimal dimension;
@NotBlank(message = "riskUnitLocation:分析单元位置不能为空")
@ApiModelProperty(value = "分析单元位置",required = true)
@Size(max = 100,message = "riskUnitLocation:分析单元位置不能大于100个字符")
private String riskUnitLocation;
// @ApiModelProperty(value = "组织机构编码")
// private String orgCode;
//
// @ApiModelProperty(value = "风险分析对象序号")
// private String serialNum;
@ApiModelProperty(value = "风险等级")
@Range(max = 3,min = 0,message = "riskLevel:风险等级传值不对")
@NotBlank(message = "riskLevel:风险等级不能为空")
private String riskLevel;
@ApiModelProperty(value = "联系电话")
private String contactNumber;
// @ApiModelProperty(value = "责任人")
// private String hazardLiablePerson;
@NotBlank(message = "责任人名称不能为空")
@ApiModelProperty(value = "责任人名称",required = true)
@Size(max = 50,message = "责任人名称不能大于50个字符")
private String hazardLiablePersonName;
@NotBlank(message = "风险分析对象名称不能为空")
@ApiModelProperty(value = "风险分析对象名称",required = true)
@Size(max = 50,message = "风险分析对象名称不能大于50个字符")
private String riskObjectName;
@NotBlank(message = "分析单元编码不能为空")
@ApiModelProperty(value = "分析单元编码",required = true)
@Size(max = 50,message = "分析单元编码不能大于50个字符")
private String riskUnitCode;
@NotBlank(message = "是否具有中毒、爆炸、火灾等危险的场所 0-否1-是不能为空")
@ApiModelProperty(value = "是否具有中毒、爆炸、火灾等危险的场所 0-否1-是")
@Range(max = 1,min = 0,message = "是否具有中毒、爆炸、火灾等危险的场所 0-否1")
private String dangerousPlace;
@NotBlank(message = "设备设施编号不能为空")
@ApiModelProperty(value = "设备设施编号",required = true)
@Size(max = 50,message = "equipmentId：设备设施编号不能大于50个字符")
private String equipmentId;
@NotBlank(message = "作业活动编号不能为空")
@ApiModelProperty(value = "作业活动编号",required = true)
@Size(max = 50,message = "activityworkId：作业活动编号不能大于50个字符")
private String activityworkId;
@NotBlank(message = "riskpointType:风险点类型不能为空")
@ApiModelProperty(value = "风险点类型",required = true)
@Range(max = 3,min = 1,message = "riskpointType：风险点类型传值不对")
private String riskpointType;
}
}说明：
@NotBlank 校验字符串，并且校验字符串是否为空""
@NotNull 校验是否为空null，包装类型
@Size字符串长度校验
@Range数字范围校验 @Range(max = 3,min = 0)
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