如何将@ConvertGroup与@GroupSequenceProvider一起使用

我正在尝试使用 @ConvertGroup 对我的spring启动项目进行一些级联验证，但它似乎不起作用 . 谁能告诉我我做错了什么？

我为这个问题创建了一个精简的项目 .

你可以在这里查看：https://github.com/ericbv/cascadingValidationConvertGroupSpringBoot

我有以下表格的DTO：

父母Dto

@GroupSequenceProvider(ParentGroupSequenceProvider.class)
public class ParentDto {

    @Valid
    @ConvertGroup(from= CreateChild.class , to = Creation.class)
    private ChildDto childDto;

    private boolean createChild;

    public ChildDto getChildDto() {
        return childDto;
    }

    public void setChildDto(ChildDto childDto) {
        this.childDto = childDto;
    }

    public boolean isCreateChild() {
        return createChild;
    }

    public void setCreateChild(boolean createChild) {
        this.createChild = createChild;
    }
}

根据我的理解，如果在验证父级时存在CreateGroup组，则ConvertGroup注释应在子验证中传递CreationGroup . （该组将由ParentGroupSequenceProvider提供 .

和子对象：

public class ChildDto {
    @NotEmpty(groups = Creation.class)
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

如果存在“创建”组，则名称不能为空 . 我已经通过将 @GroupSequence({ChildDto.class,Creation.class}) 添加到此类的顶部进行了测试，这导致了验证错误 .

父DTO具有以下组序列提供程序：

public class ParentGroupSequenceProvider implements DefaultGroupSequenceProvider<ParentDto> {

    static Logger log = Logger.getLogger(ParentGroupSequenceProvider.class.getName());
    @Override
    public List<Class<?>> getValidationGroups(ParentDto parentDto) {
        List<Class<?>> sequence = new ArrayList<Class<?>>();

      /*
       * must be added to the returned list so that the validator gets to know
       * the default validation rules, at the very least.
       */
        sequence.add(ParentDto.class);

        if (parentDto == null)
            return sequence;
      /*
       *  Here, we can implement a certain logic to determine what are the additional group of rules
       *  that must be applied.
       */
        if(parentDto.isCreateChild()){
            sequence.add(CreateChild.class);
            log.info("Added CreateChild to groups");

        }

        return sequence;
    }
}

如果创建布尔值为true，则此序列提供程序将添加creatChild组 .

我通过使用 @NotEmpty(groups = CreateChild.class) 向parentDto添加字符串属性来测试groupSequenceProvider . 这引发了验证错误，因此我知道该组已提供 .

控制器mehtod：

@RequestMapping(value = "/test",method = RequestMethod.POST)
public String doPost(@Valid ParentDto parentDto, BindingResult bindingResult){
    if(bindingResult.hasErrors()){
        bindingResult.getAllErrors().forEach( error-> log.error(error));
        return "redirect: /error";
    }else{
        return "redirect: /";
    }

}

问题是当表单提交并且createChild为true时，不验证childDto中的name属性 .

我错过了什么？

Pom文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<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>

    <groupId>com.test</groupId>
    <artifactId>valid-testing</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>valid-testing</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.3.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-el</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

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


</project>