Spring-Data-Rest 验证器

问题描述 投票:0回答:5

我一直在尝试将 spring 验证器添加到 spring-data-rest 项目中。

我按照以下链接设置了“入门”应用程序:http://spring.io/guides/gs/accessing-data-rest/

...现在我尝试按照此处的文档添加自定义 PeopleValidator: http://docs.spring.io/spring-data/rest/docs/2.1.0.RELEASE/reference/html/validation-chapter.html

我的自定义 PeopleValidator 看起来像

package hello;

import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

public class PeopleValidator implements Validator {
    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }

    @Override
    public void validate(Object target, Errors errors) {
        errors.reject("DIE");
    }
}

...我的 Application.java 类现在看起来像这样

package hello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;

@Configuration
@EnableJpaRepositories
@Import(RepositoryRestMvcConfiguration.class)
@EnableAutoConfiguration
public class Application {

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

    @Bean
    public PeopleValidator beforeCreatePeopleValidator() {
        return new PeopleValidator();
    }
}

我希望 POST 到

http://localhost:8080/people
URL 会导致某种错误,因为 PeopleValidator 会拒绝所有内容。但是,不会引发任何错误,也不会调用验证器。

我还尝试手动设置验证器,如 spring-data-rest 文档的第 5.1 节所示。

我错过了什么?

java spring spring-boot spring-data-rest spring-validator
5个回答
17
投票

因此,“保存”事件之前/之后似乎仅在 PUT 和 PATCH 上触发。发布时,会触发之前/之后的“创建”事件。

我使用

configureValidatingRepositoryEventListener
覆盖再次尝试手动方式,它起作用了。我不确定我在工作中所做的事情与在家里所做的事情有何不同。明天我得看看。

我当然很想听听其他人是否有关于为什么它不起作用的建议。

郑重声明,新的 Application.java 类如下所示。

package hello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.rest.core.event.ValidatingRepositoryEventListener;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;

@Configuration
@EnableJpaRepositories
@Import(RepositoryRestMvcConfiguration.class)
@EnableAutoConfiguration
public class Application extends RepositoryRestMvcConfiguration {

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

    @Override
    protected void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener validatingListener) {
        validatingListener.addValidator("beforeCreate", new PeopleValidator());
    }
}

3
投票

看起来该功能目前尚未实现(2.3.0),不幸的是事件名称没有常量,否则下面的解决方案不会那么脆弱。

Configuration
使用正确的事件将所有正确命名的
Validator
beans 添加到
ValidatingRepositoryEventListener

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.rest.core.event.ValidatingRepositoryEventListener;
import org.springframework.validation.Validator;

@Configuration
public class ValidatorRegistrar implements InitializingBean {

    private static final List<String> EVENTS;
    static {
        List<String> events = new ArrayList<String>();
        events.add("beforeCreate");
        events.add("afterCreate");
        events.add("beforeSave");
        events.add("afterSave");
        events.add("beforeLinkSave");
        events.add("afterLinkSave");
        events.add("beforeDelete");
        events.add("afterDelete");
        EVENTS = Collections.unmodifiableList(events);
    }

    @Autowired
    ListableBeanFactory beanFactory;

    @Autowired
    ValidatingRepositoryEventListener validatingRepositoryEventListener;

    @Override
    public void afterPropertiesSet() throws Exception {
        Map<String, Validator> validators = beanFactory.getBeansOfType(Validator.class);
        for (Map.Entry<String, Validator> entry : validators.entrySet()) {
            EVENTS.stream().filter(p -> entry.getKey().startsWith(p)).findFirst()
                    .ifPresent(p -> validatingRepositoryEventListener.addValidator(p, entry.getValue()));
        }
    }
}

1
投票

有点在黑暗中刺伤 - 我没有使用过

spring-data-rest
。然而,在阅读了您正在关注的教程后,我认为问题是您需要
PersonValidator
而不是
PeopleValidator
。相应地重命名所有内容:

个人验证器

package hello;

import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

public class PersonValidator implements Validator {
    @Override
    public boolean supports(Class<?> clazz) {
        return true;
    }

    @Override
    public void validate(Object target, Errors errors) {
        errors.reject("DIE");
    }
}

申请

package hello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration;

@Configuration
@EnableJpaRepositories
@Import(RepositoryRestMvcConfiguration.class)
@EnableAutoConfiguration
public class Application {

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

    @Bean
    public PersonValidator beforeCreatePersonValidator() {
        return new PersonValidator();
    }
}

0
投票

另一种方法是使用此处指定的带注释的处理程序 http://docs.spring.io/spring-data/rest/docs/2.1.0.RELEASE/reference/html/events-chapter.html#d5e443

以下是如何使用带注释的处理程序的示例:

import gr.bytecode.restapp.model.Agent;
import org.springframework.data.rest.core.annotation.HandleBeforeCreate;
import org.springframework.data.rest.core.annotation.HandleBeforeSave;
import org.springframework.data.rest.core.annotation.RepositoryEventHandler;
import org.springframework.stereotype.Component;

@Component
@RepositoryEventHandler(Agent.class)
public class AgentEventHandler {

    public static final String NEW_NAME = "**modified**";

    @HandleBeforeCreate
    public void handleBeforeCreates(Agent agent) {
            agent.setName(NEW_NAME);
    }

    @HandleBeforeSave
    public void handleBeforeSave(Agent agent) {
        agent.setName(NEW_NAME + "..update");
    }
}

示例来自 github,为简洁起见进行了编辑。


0
投票

我猜 spring-data-rest 是基于 Spring Data PersistentEntity 构建的,直接应用验证(针对来自模型对象的验证信息)可能并不容易。

您可能需要执行以下操作才能使请求验证工作:

  1. 创建一个 bean 验证器工厂来创建 JSR-303 bean 验证器(如果您还没有):

@配置 公共类 BeanValidatorConfig {

@Bean
LocalValidatorFactoryBean localValidatorFactoryBean() {
    return new LocalValidatorFactoryBean();
}

}

  1. 添加 Bean 验证器

@组件 @RequiredArgsConstructor 公共类 CustomizedRepositoryRestConfiguration 实现 RepositoryRestConfigurer {

private final LocalValidatorFactoryBean validator;

@Override
public void configureValidatingRepositoryEventListener(ValidatingRepositoryEventListener v) {
    v.addValidator("beforeCreate", validator);
    v.addValidator("beforeSave", validator);
    v.addValidator("beforeLinkSave", validator);
}

}

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