在spring-data-rest中使用验证器返回http 500而不是400

Question

我正试图在spring-data-rest中进行验证.从文档中你只需要提供一个验证器,我就可以使用它,但是当成功捕获/处理验证约束时,我会得到一个带有堆栈跟踪的500错误页面.

在config类中,RepositoryRestMvcConfiguration它有一个validationExceptionHandler,它看起来应该得到这样的验证错误,返回400而不是500.它也是一个延迟加载的bean.

我的设置不正确吗？还是有另一种方法让spring-data-rest返回400而不是500？

我正在使用spring-data-rest版本2.0.0版本

tomcat返回堆栈跟踪:

HTTP Status 500 - Request processing failed; nested exception is javax.validation.ConstraintViolationException: Validation failed for classes [test.domain.Account] during persist time for groups [javax.validation.groups.Default, ]

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.validation.ConstraintViolationException: Validation failed for classes [test.domain.Account] during persist time for groups [javax.validation.groups.Default, ]
List of constraint violations:[
    ConstraintViolationImpl{interpolatedMessage='size must be between 0 and 10', propertyPath=login, rootBeanClass=class test.domain.Account, messageTemplate='{javax.validation.constraints.Size.message}'}
]
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:855)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

账户实体:

@Entity
public class Account {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    Long id;

    @Column(unique = true)
    @Size(max = 10)
    String login;

}

RestMvcConfig:

@Configuration
public class RestExporterRestConfig extends RepositoryRestMvcConfiguration {}

Answer 1

似乎已经开始工作了；我必须重写 validatingRepositoryEventListener() 并手动将验证器添加到侦听器；

@Configuration
public class RestExporterRestConfig extends RepositoryRestMvcConfiguration {

    @Bean
    public Validator validator() {
        return new LocalValidatorFactoryBean();
    }

    @Bean
    @Override
    public ValidatingRepositoryEventListener validatingRepositoryEventListener() {
        ValidatingRepositoryEventListener listener = new ValidatingRepositoryEventListener();
        configureValidatingRepositoryEventListener(listener);
        listener.addValidator("afterCreate", validator());
        listener.addValidator("beforeCreate", validator());
        return listener;
    }

}

我现在收到 400 退回如下；

400 Bad Request
{"errors":
    [{  "entity":"Account",
        "message":"size must be between 0 and 10",
        "invalidValue":"login 0dsfdsfdsfdsfdsfdsfdsfds",
        "property":"login"
    }]
}