Spring Data Rest Validation Confusion

Question

寻找有关正确处理验证错误的Spring数据休息验证的一些帮助:

我对这里关于spring-data-rest验证的文档非常困惑:http://docs.spring.io/spring-data/rest/docs/current/reference/html/#validation

我正在尝试正确处理试图保存新公司实体的POST调用的验证

我有这个实体:

@Entity
public class Company implements Serializable {

@Id
@GeneratedValue
private Long id;

@NotNull
private String name;

private String address;

private String city;

private String country;

private String email;

private String phoneNumber;

@OneToMany(cascade = CascadeType.ALL, mappedBy = "company")
private Set<Owner> owners = new HashSet<>();

public Company() {
    super();
}

...

和这个RestResource dao

import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.rest.core.annotation.RestResource;

import com.domain.Company;

@RestResource
public interface CompanyDao extends PagingAndSortingRepository<Company,   Long> {


}

POST请求api /公司:

{
  "address" : "One Microsoft Way",
  "city" : "Redmond",
  "country" : "USA",
  "email" : "info@microsoft.com",
  "phoneNumber" : "(425) 703-6214"

}

当我发出一个带有空名称的POST时,我得到了httpcode 500的以下休息响应

{"timestamp":1455131008472,"status":500,"error":"内部服务器错误","异常":"javax.validation.ConstraintViolationException","message":"类验证失败[com.domain.Company ]在持久化时间组[javax.validation.groups.Default,] \n约束违规列表:[\n\t \nConstraintViolationImpl {interpolatedMessage ='可能不为空',propertyPath = name,rootBeanClass = class com.domain.Company, messageTemplate = '{javax.validation.constraints.NotNull.message}'} \n]的", "路径": "/ API /公司/"}

我尝试创建以下bean,但它似乎永远不会做任何事情:

@Component(value="beforeCreateCompanyValidator")
public class BeforeCreateCompanyValidator implements Validator{

@Override
public boolean supports(Class<?> clazz) {
    return Company.class.isAssignableFrom(clazz);
}

@Override
public void validate(Object arg0, Errors arg1) {
    System.out.println("xxxxxxxx");


}

}

即使它确实有效,它如何通过正确的http代码和可理解的json响应来帮助我开发更好的错误响应？

如此迷茫

使用1.3.2.RELEASE

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.2.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

Answer 1

@Mathias似乎以下内容足以检查jsr 303注释,并且自动返回带有好消息的400代码的http代码(我甚至不需要BeforeCreateCompanyValidator或BeforeSaveCompanyValidator类):

@Configuration
public class RestValidationConfiguration extends RepositoryRestConfigurerAdapter{

@Bean
@Primary
/**
 * Create a validator to use in bean validation - primary to be able to autowire without qualifier
 */
Validator validator() {
    return new LocalValidatorFactoryBean();
}


@Override
public void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener validatingListener) {
    Validator validator = validator();
    //bean validation always before save and create
    validatingListener.addValidator("beforeCreate", validator);
    validatingListener.addValidator("beforeSave", validator);
}

}

响应404,{"errors":[{"entity":"Company","message":"may not null","invalidValue":"null","property":"name"},{"entity" :"公司","消息":"可能不为空","invalidValue":"null","property":"address"}]}

Answer 2

我认为您的问题是 bean 验证发生得太晚了 - 它是在持久化之前在 JPA 级别完成的。我发现 - 与 spring mvc 不同 - spring-data-rest 在调用控制器方法时没有进行 bean 验证。为此，您将需要一些额外的配置。

您希望 spring-data-rest 验证您的 bean - 这将为您提供很好的错误消息响应和正确的 http 返回代码。

我在 spring-data-rest 中配置了我的验证，如下所示：

@Configuration
public class MySpringDataRestValidationConfiguration extends RepositoryRestConfigurerAdapter {

    @Bean
    @Primary
    /**
     * Create a validator to use in bean validation - primary to be able to autowire without qualifier
     */
    Validator validator() {
        return new LocalValidatorFactoryBean();
    }

    @Bean
    //the bean name starting with beforeCreate will result into registering the validator before insert
    public BeforeCreateCompanyValidator beforeCreateCompanyValidator() {
        return new BeforeCreateCompanyValidator();
    }

    @Override
    public void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener validatingListener) {
        Validator validator = validator();
        //bean validation always before save and create
        validatingListener.addValidator("beforeCreate", validator);
        validatingListener.addValidator("beforeSave", validator);
    }
}

当 bean 验证和/或我的自定义验证器发现错误时，我收到一个 400 - 错误的请求，负载如下：

    Status = 400
    Error message = null
    Headers = {Content-Type=[application/hal+json]}
    Content type = application/hal+json
   Body = {
     "errors" : [ {
     "entity" : "siteWithAdminUser",
     "message" : "may not be null",
     "invalidValue" : "null",
     "property" : "adminUser"
     } ]
   }