@valid(validated)校验(验证) 的使用注意事项

首先先查看springboot项目有没有@valid和@validated依赖，没有的话就导入依赖

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

1：对于只有参数的时候使用，需要在类上加@validated,验证才生效

/**
 * @Author xqf
 * @since 2023-08-27
 */
@RestController
@RequestMapping("/sys")
@Api(tags="参数校验")
@Slf4j
@Validated
public class ValidTestController {
    
    
	@ApiOperation("验证参数")
	@RequestMapping(value = "/validParameter", method = RequestMethod.POST)
	public Result<JSONObject> checkValidParameter(@NotBlank String validObject) {
    
    
		Result<JSONObject> result = new Result<JSONObject>();
		return result;
	}
}

2：验证传对象使用@RequestBody修饰里面的属性，使用@Valid和@Validated都可以如下

package org.jeecg.modules.system.controller;

import com.alibaba.fastjson.JSONObject;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.jeecg.common.api.vo.Result;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;
import javax.validation.constraints.NotBlank;

/**
 * @Author xu
 * @create 2023/8/27 11
 */
@RestController
@RequestMapping("/sys")
@Api(tags="参数校验")
@Slf4j
public class ValidTestController {
    
    
	@ApiOperation("验证对象")
	@RequestMapping(value = "/validObjec", method = RequestMethod.POST)
	public Result<JSONObject> checkValidObjec(@RequestBody @Valid ValidObject validObject)  {
    
    
		Result<JSONObject> result = new Result<>();
		return result;
	}
}

注意：验证对象，@NotBlank 注解不适用于整数类型，只能使用@NotNull或@Min(value)

package org.jeecg.modules.system.controller;

import lombok.Data;
import org.jeecg.modules.system.vo.dto.Age;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;

/**
 * 验证对象
 * @Author xu
 * @create 2023/8/27 11
 */
@Data
public class ValidObject {
    
    

    @NotNull(message = "年龄不可为空")
    private Integer age;

    @NotBlank(message = "名字不可为空")
    private String name;
    private Integer phone;
}

4：单单使用@NotBlank验证对象，是会一致提示校验出错如下，这种情况不能对封装对象单独验证。只能对对象里面的属性进行验证

@ApiOperation("验证对象")
	@RequestMapping(value = "/validObjec", method = RequestMethod.POST)
	public Result<JSONObject> checkValidObjec(@NotBlank ValidObject validObject)  {
    
    
		Result<JSONObject> result = new Result<>();
		return result;
	}

@NotBlank只对属性进行验证，不对对象进行验证
@@Valid写在类上，失效，需要用@Validated