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使用springboot验证请求中的列表是否为[null]

spring-validation spring-validator spring-boot spring java

PatPanda · 技术社区 · 4 月前

我的目标是针对如下请求进行验证(失败):

{
  "title": "some title",
  "foos": [null]
}

我有一个简单的代码:

import jakarta.validation.Valid;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
class FieldValidationController {

    @PostMapping("/question")
    String question(@Valid @RequestBody SomeRequest someRequest) {
        return "test";
    }

}

record SomeRequest(

    @NotEmpty(message = "Please enter the title")
    String title,

    @NotNull
    @NotEmpty
    @Valid
    List<@Valid Foo> foos

) {
}

import jakarta.validation.constraints.NotEmpty;
import jakarta.validation.constraints.NotNull;

import java.util.Map;

@NotNull
record Foo(@NotNull @NotEmpty String name, @NotNull @NotEmpty Map<String, Object> themap) {
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
class FieldValidationApplication {

    public static void main(String[] args) {
        SpringApplication.run(FieldValidationApplication.class, args);
    }

}

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.4.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <artifactId>question</artifactId>

    <properties>
        <maven.compiler.source>23</maven.compiler.source>
        <maven.compiler.target>23</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

我可以确认这是如何工作的,因为在我的5个测试用例中,有4个是好的(失败)。

1-良好:

curl --location 'http://localhost:8080/question' \
--header 'Content-Type: application/json' \
--data '{
  "title": "some title"
}'

2-良好:

curl --location 'http://localhost:8080/question' \
--header 'Content-Type: application/json' \
--data '{
  "title": "some title",
  "foos": null
}'

3-良好:

curl --location 'http://localhost:8080/question' \
--header 'Content-Type: application/json' \
--data '{
  "title": "some title",
  "foos": []
}'

4-良好:

curl --location 'http://localhost:8080/question' \
--header 'Content-Type: application/json' \
--data '{
  "title": "some title",
  "foos": [{}]
}'

然而,我预计这也会失败,但事实并非如此。

curl --location 'http://localhost:8080/question' \
--header 'Content-Type: application/json' \
--data '{
  "title": "some title",
  "foos": [null]
}'

我可以问一下如何核对吗 [null] ?

1 回复 | 直到 4 月前

Georgii Lvov 4 月前

您需要添加 @NotNull 到 Foo 通用参数:

record SomeRequest(

            @NotEmpty(message = "Please enter the title")
            String title,

            @NotNull
            @NotEmpty
            @Valid
            List<@NotNull @Valid Foo> foos // here @NotNull added

    ) {
}