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hibernate-validator校验对象属性为List

2023-02-18 16:36:20 时间

君子拙于不知己而信于知己也——司马迁

文档：

https://docs.jboss.org/hibernate/stable/validator/reference/en-US/html_single/#_with_list

我们这里首先引入starter

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

然后我们带两个Entity以及一个Controller

package com.ruben.simplestreamquery.pojo;

import lombok.Data;

import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import java.util.List;

@Data
public class TestEntity {

    @NotNull
    private Long id;

    @NotEmpty
    private List<EntityItem> list;

}
package com.ruben.simplestreamquery.pojo;

import lombok.Data;

import javax.validation.constraints.NotNull;

/**
 * @author VampireAchao
 * @since 2022/12/20 14:57
 */
@Data
public class EntityItem {
    @NotNull
    private Long id;
}
package com.ruben.simplestreamquery.controller;

import com.ruben.simplestreamquery.pojo.TestEntity;
import lombok.extern.slf4j.Slf4j;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

/**
 * TestController
 *
 * @author VampireAchao
 * @since 2022/10/5
 */
@Slf4j
@RestController
public class TestController {

    @PostMapping("test")
    public void list(@RequestBody @Validated TestEntity testEntity) {
        log.info("请求成功！{}", testEntity);
    }

}

我们编写一个Mock

package com.ruben.simplestreamquery;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.ruben.simplestreamquery.pojo.EntityItem;
import com.ruben.simplestreamquery.pojo.TestEntity;
import io.github.vampireachao.stream.core.collection.Lists;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

/**
 * @author VampireAchao
 * @since 2022/12/20 13:48
 */
@SpringBootTest
@AutoConfigureMockMvc
class TestControllerTest {

    @Test
    void test(@Autowired MockMvc mockMvc, @Autowired ObjectMapper objectMapper) throws Exception {
        final TestEntity entity = new TestEntity();
        entity.setId(1L);
        entity.setList(Lists.of(new EntityItem()));
        final String jsonStr = objectMapper.writeValueAsString(entity);
        mockMvc.perform(post("/test")
                        .contentType("application/json")
                        .content(jsonStr))
                .andExpect(status().isOk());
    }

}

此时我们对List<EntityItem>的校验失效了

如何生效？

将List<EntityItem>加上@Valid注解

package com.ruben.simplestreamquery.pojo;

import lombok.Data;

import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.NotNull;
import java.util.List;

@Data
public class TestEntity {

    @NotNull
    private Long id;

    @NotEmpty
    private List<@Valid EntityItem> list;

}

再次测试

校验生效了

我们稍微封装一下异常处理

package com.ruben.simplestreamquery.handler;

import com.ruben.simplestreamquery.pojo.vo.GlobalResult;
import io.github.vampireachao.stream.core.stream.Steam;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.List;

/**
 * ResponseHandler
 *
 * @author VampireAchao
 * @since 2022/10/5
 */
@RestControllerAdvice
public class ResponseHandler {
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    public GlobalResult parameterValidatorResolver(MethodArgumentNotValidException e) {
        List<FieldError> errors = e.getBindingResult().getFieldErrors();
        final GlobalResult result = GlobalResult.error();
        result.set("msg", Steam.of(errors).map(error -> error.getField() + " " + error.getDefaultMessage()).join("  "));
        return result;
    }

}

然后打印出来响应结果

package com.ruben.simplestreamquery;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.ruben.simplestreamquery.pojo.EntityItem;
import com.ruben.simplestreamquery.pojo.TestEntity;
import io.github.vampireachao.stream.core.collection.Lists;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

/**
 * @author VampireAchao
 * @since 2022/12/20 13:48
 */
@Slf4j
@SpringBootTest
@AutoConfigureMockMvc
class TestControllerTest {

    @Test
    void test(@Autowired MockMvc mockMvc, @Autowired ObjectMapper objectMapper) throws Exception {
        final TestEntity entity = new TestEntity();
        entity.setId(1L);
        entity.setList(Lists.of(new EntityItem()));
        final String jsonStr = objectMapper.writeValueAsString(entity);
        final MvcResult result = mockMvc.perform(post("/test")
                        .contentType("application/json")
                        .content(jsonStr))
                .andExpect(status().isOk())
                .andReturn();
        log.info(result.getResponse().getContentAsString());
    }

}

成功提示

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