春季-触发“ beforeSave” RepositoryEventHandler之前的实体验证

Spring Data REST docs描述了在RepositoryEventHandler触发后验证实体的方法：

you simply need to register an instance of your validator with the
bean whose job it is to invoke validators after the correct event

在将实体传递给“ beforeSave” RepositoryEventHandlers之前,是否有方法对其应用[声明性] JSR-303验证？

从到目前为止我所看到的调试情况来看,情况并非如此,并且在进行任何验证之前都会触发“ beforeSave” RepositoryEventHandlers.

我可以直接在处理程序中编写验证调用,但这与处理“之后”验证的方式有所不同.

顺便说一句.在Spring Boot 1.3.8和1.5.1之间,事件处理程序调用的顺序似乎已更改.过去,验证发生在@HandleBeforeSave处理程序之前.在1.5.1中,在@HandleBeforeSave处理程序之后触发ValidatingRepositoryEventListener.

更新：

如评论中所述,Spring Data REST Jira中似乎有一个ticket对此已开放.

解决方法:

解决方法：

>创建PreflightValidatingRepositoryEventListener,它扩展了ValidatingRepositoryEventListener并使用@Order(Ordered.HIGHEST_PRECEDENCE)对其进行注释.

@Component
@Order(Ordered.HIGHEST_PRECEDENCE)
public class PreflightValidatingRepositoryEventListener extends ValidatingRepositoryEventListener {
    public PreflightValidatingRepositoryEventListener(ObjectFactory<PersistentEntities> persistentEntitiesFactory) {
        super(persistentEntitiesFactory);
    }
}

>添加与ValidatingRepositoryEventListener相同的验证器

@Configuration
@Import(RepositoryRestMvcConfiguration.class)
public class Config extends RepositoryRestConfigurerAdapter {

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

    @Autowired
    private PreflightValidatingRepositoryEventListener preflightValidatingRepositoryEventListener;

    @Override
    public void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener validatingListener) {
        Validator validator = validator();

        validatingListener.addValidator("beforeCreate", validator);
        validatingListener.addValidator("beforeSave", validator);

        preflightValidatingRepositoryEventListener.addValidator("beforeCreate", validator);
        preflightValidatingRepositoryEventListener.addValidator("beforeSave", validator);
    }
}

NOTE: Validation will be ran twice

标签：validation,spring-data-rest,spring
来源： https://codeday.me/bug/20191026/1934727.html