Question

我正在尝试在我的项目中实现自动连接，但是当我运行它时，我的应用程序似乎没有在application-context.xml中看到我的SessionFactory定义。

我可能遗漏了一些非常明显的东西，尽管我已经尝试过几个有类似问题但没有成功的帖子的解决方案。

我正在使用Spring MVC和Hibernate。

这是我的application-context.xml。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">

    <context:annotation-config />
    <context:component-scan base-package="arlua" />

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/pages/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>

    <bean id="serverDatasource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName">
            <value>oracle.jdbc.driver.OracleDriver</value>
        </property>
        <property name="url">
            <value>url</value>
        </property>
        <property name="username">
            <value>${user}</value>
        </property>
        <property name="password">
            <value>${pwd}</value>
        </property>
    </bean>

    <bean id="propertyPlaceholderConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreUnresolvablePlaceholders" value="true"/>
    </bean>

    <bean id="mySessionFactory"
        class="org.springframework.orm.hibernate3.annotation.LocalSessionFactoryBean">
        <property name="mappingResources">
            <list>
                <value>mapping/user_info.hbm.xml</value>
                <value>mapping/login.hbm.xml</value>
                <value>mapping/linked_accounts.hbm.xml</value>
                <value>mapping/application_instance.hbm.xml</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
            </props>
        </property>
        <property name="dataSource" ref="serverDatasource"/>
    </bean>

    <bean id = "userInfoDaoImpl" class="arlua.dao.impl.UserInfoDaoImpl">
        <property name="sessionFactory" ref="mySessionFactory"/>
    </bean>

    <bean id = "loginDaoImpl" class="arlua.dao.impl.LoginDaoImpl">
        <property name="sessionFactory" ref="mySessionFactory"/>
    </bean>

    <bean id = "linkedAccountsDaoImpl" class="arlua.dao.impl.LinkedAccountsDaoImpl">
        <property name="sessionFactory" ref="mySessionFactory"/>
    </bean>
    <!--
    <bean id = "applicationInstanceDaoImpl" class="arlua.dao.impl.ApplicationInstanceDaoImpl">
        <property name="sessionFactory" ref="mySessionFactory"/>
    </bean>
     -->
    <!--  *************  TRANSACTION MANAGEMENT USING AOP **************** -->

    <bean id="myTransactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="mySessionFactory"/>    
    </bean>

    <aop:config>
        <aop:pointcut id="allMethods" expression="execution(* arlua.dao.TableEntityFetchDao.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="allMethods"/>
    </aop:config>

    <tx:advice id="txAdvice" transaction-manager="myTransactionManager">
        <tx:attributes>
            <tx:method name="saveEntity"
                propagation = "REQUIRES_NEW"
                isolation = "READ_COMMITTED"
                rollback-for = "Exception"/>
            <tx:method name="updateEntity"
                propagation = "REQUIRES_NEW"
                isolation = "READ_COMMITTED"
                rollback-for = "Exception"/>
            <tx:method name="getEntity"
                propagation = "REQUIRES_NEW"
                isolation = "READ_COMMITTED"
                rollback-for = "Exception"/>
            <tx:method name="getAllEntities"
                propagation = "REQUIRES_NEW"
                isolation = "READ_COMMITTED"
                rollback-for = "Exception"/>
        </tx:attributes>
    </tx:advice>

</beans>

这是我尝试自动装配的控制器类。

package arlua.controller;

import arlua.dao.TableEntityFetchDao;
import arlua.dao.impl.ApplicationInstanceDaoImpl;
import arlua.service.SearchCriteria;
import arlua.service.UserAction;
import arlua.tables.ApplicationInstanceTable;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.servlet.ModelAndView;

@Controller
@SessionAttributes
public class SearchAppController{
    @Autowired public ApplicationInstanceDaoImpl applicationInstanceDaoImpl;

    private String input;
    private ApplicationInstanceTable oldApp, newApp;

    @RequestMapping(value = "/search_app_instance", method = RequestMethod.POST)
    public String mySearchMethod(@ModelAttribute("search_criteria") SearchCriteria search){
        input = search.getInput();

        if(input != null)
            input = input.toUpperCase();

        return "redirect:search_app_instance";
    }

    @RequestMapping("/search_app_instance")
    public ModelAndView mySuccessMethod(){
        ModelAndView model = new ModelAndView("search_app_instance");

            //Check and Make sure that the app exists
            //ApplicationContext factory = 
            //  new ClassPathXmlApplicationContext("spring-namespace.xml");
            //TableEntityFetchDao urd = (TableEntityFetchDao)factory.getBean("applicationInstanceDaoImpl");
            try{
                ApplicationInstanceTable app = 
                    (ApplicationInstanceTable) applicationInstanceDaoImpl.getEntity(input);
                oldApp = app;
                //Load app data into table
                model.addObject("app_id", app.getApplication_id());
                model.addObject("name", app.getName());
                model.addObject("default_exp_period", app.getDefault_expiration_period());
                model.addObject("server", app.getServer());
                model.addObject("description", app.getDescription());
                model.addObject("active", app.getActive());
                model.addObject("conn_string", app.getConn_string());
                model.addObject("creation_date", app.getCreation_date().getTime());
                model.addObject("error", "");
            }
            catch(Exception e){
                if(input != null)
                {
                    model.addObject("error", "Application could not be found.");
                    input = "";
                }
            }

        return model;
    }


    @RequestMapping(value = "/app_actions", method = RequestMethod.POST)
    public String userActionsMethod(@ModelAttribute("user_action") UserAction action, 
            @ModelAttribute("app_info") ApplicationInstanceTable app_info){
        if(action.getAction().equals("update_info"))
        {
            newApp = app_info;
            return "redirect:update_app_info";
        }
        return "redirect:search_app_instance";
    }

    @RequestMapping("/update_app_info")
    public ModelAndView updateInfoMethod(){
        ModelAndView model = new ModelAndView("search_app_instance");

            ApplicationContext factory = 
                new ClassPathXmlApplicationContext("spring-namespace.xml");
            TableEntityFetchDao urd = (TableEntityFetchDao)factory.getBean("applicationInstanceDaoImpl");
            newApp.setApplication_id(oldApp.getApplication_id());
            newApp.setCreation_date(oldApp.getCreation_date());
            urd.updateEntity(newApp);

        model.addObject("msg", "Application '" + newApp.getApplication_id() + "' modified successfully.");
        return model;
    }

}

ApplicationInstanceDaoImpl Class

package arlua.dao.impl;

import arlua.dao.TableEntityFetchDao;
import arlua.tables.ApplicationInstanceTable;

import java.util.List;

import javax.annotation.Resource;

import org.hibernate.SessionFactory;
import org.springframework.stereotype.Repository;

@Repository("applicationInstanceDaoImpl")
public class ApplicationInstanceDaoImpl extends TableEntityFetchDao{

    public SessionFactory mySessionFactory;

    @Resource(name = "mySessionFactory")
    public void setMySessionFactory(SessionFactory mySessionFactory){
        this.mySessionFactory = mySessionFactory;
    }

    public void saveEntity(Object applicationInstance) {
        this.mySessionFactory.getCurrentSession().save((ApplicationInstanceTable)applicationInstance);
    }

    public ApplicationInstanceTable getEntity(Object application_id) {
        return (ApplicationInstanceTable)this.mySessionFactory.getCurrentSession().
            get(ApplicationInstanceTable.class, (String)application_id);
    }

    public void updateEntity(Object applicationInstance) {
        this.mySessionFactory.getCurrentSession().update((ApplicationInstanceTable)applicationInstance);
    }

    public void deleteEntity(Object applicationInstance) {
        this.mySessionFactory.getCurrentSession().delete((ApplicationInstanceTable)applicationInstance);
    }

    public List<?> getAllEntities() {
        return this.mySessionFactory.getCurrentSession().createQuery
            ("FROM application_instance").list();
    }
}

TableEntityFetchDao类

package arlua.dao;

import java.util.List;

import org.hibernate.SessionFactory;

/*
This class will serve as a generic blueprint for all of the other data access implementation classes
that are used to perform basic CRUD operations on the arlua tables (ie UserInfoDaoImpl).
 */
public abstract class TableEntityFetchDao {

    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory){
        this.sessionFactory = sessionFactory;
    }

    public abstract void saveEntity(final Object entity);

    public abstract Object getEntity(final Object key);

    public abstract void updateEntity(final Object entity);

    public abstract void deleteEntity(final Object entity);

    public abstract List<?> getAllEntities();
}

这是我的大部分堆栈跟踪。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchAppController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public arlua.dao.impl.ApplicationInstanceDaoImpl arlua.controller.SearchAppController.applicationInstanceDaoImpl; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationInstanceDaoImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'mySessionFactory' is defined
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
    at org.apache.catalina.core.StandardService.start(StandardService.java:525)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchAppController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: public arlua.dao.impl.ApplicationInstanceDaoImpl arlua.controller.SearchAppController.applicationInstanceDaoImpl; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationInstanceDaoImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'mySessionFactory' is defined
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:285)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1074)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1075)
    at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:383)
    at org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.registerHandler(AbstractUrlHandlerMapping.java:362)
    at org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.detectHandlers(AbstractDetectingUrlHandlerMapping.java:82)
    at org.springframework.web.servlet.handler.AbstractDetectingUrlHandlerMapping.initApplicationContext(AbstractDetectingUrlHandlerMapping.java:58)
    at org.springframework.context.support.ApplicationObjectSupport.initApplicationContext(ApplicationObjectSupport.java:119)
    at org.springframework.web.context.support.WebApplicationObjectSupport.initApplicationContext(WebApplicationObjectSupport.java:72)
    at org.springframework.context.support.ApplicationObjectSupport.setApplicationContext(ApplicationObjectSupport.java:73)
    at org.springframework.context.support.ApplicationContextAwareProcessor.invokeAwareInterfaces(ApplicationContextAwareProcessor.java:106)
    at org.springframework.context.support.ApplicationContextAwareProcessor.postProcessBeforeInitialization(ApplicationContextAwareProcessor.java:85)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:394)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1413)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
    ... 26 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: public arlua.dao.impl.ApplicationInstanceDaoImpl arlua.controller.SearchAppController.applicationInstanceDaoImpl; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationInstanceDaoImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'mySessionFactory' is defined
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:502)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:282)
    ... 46 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationInstanceDaoImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'mySessionFactory' is defined
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:300)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1074)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:474)
    ... 48 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'mySessionFactory' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:527)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1083)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:274)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:435)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:409)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:541)
    at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:156)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)
    at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:297)
    ... 59 more

编辑：我最终通过自动装配到TableEntityFetchDao接口而不是正在实现它的类ApplicationInstanceDaoImpl修复我的问题。

所以，这个

@Autowired public ApplicationInstanceDaoImpl applicationInstanceDaoImpl;

成为此

@Autowired public TableEntityFetchDao applicationInstanceDao;

这似乎解决了我的问题。

Answer 1

而不是：

@Resource(name = "mySessionFactory")
public void setMySessionFactory(SessionFactory mySessionFactory){
    this.mySessionFactory = mySessionFactory;
}

使用：

@Autowired
private SessionFactory mySessionFactory;

修改

截至下面的评论：

不确定为什么方法不起作用但我的猜测是父TableEntityFetchDao类具有会话工厂的setter，然后ApplicationInstanceDaoImpl - 子类覆盖它并且spring因某种原因不喜欢它，如果TableEntityFetchDao是一个接口，则会注入setter，因为@Resource的作用与@Autowired的作用相同，@Resource允许指定bean的名称注入，@Autowire允许您将bean标记为不需要。

要让@Resource正常工作，我会尝试从父类中删除setter方法。无论哪种方式都没有意义，因为没有使用它。 sessionFactory字段。这也可以删除。然后类只包含抽象方法，可以成为一个接口。另外，我会使用TableEntityFetchDao注释对@Service进行注释，以便更好地理解它是服务层类。

Answer 2

@Resource(name = "mySessionFactory")
public void setMySessionFactory(SessionFactory mySessionFactory){
    this.mySessionFactory = mySessionFactory;
}

尝试@Autowired public void setMySessionFactory(SessionFactory mySessionFactory){ this.mySessionFactory = mySessionFactory; }

Answer 3

从弹簧配置文件

中的以下代码段修改您的代码

<bean id="mySessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="mappingLocations">
    <list>
        <value>mapping/user_info.hbm.xml</value>
        <value>mapping/login.hbm.xml</value>
        <value>mapping/linked_accounts.hbm.xml</value>
        <value>mapping/application_instance.hbm.xml</value>
    </list>
</property>
<property name="hibernateProperties">
    <props>
        <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
        <prop key="hibernate.hbm2ddl.auto">update</prop>
    </props>
</property>
<property name="dataSource" ref="serverDatasource"/>

我希望这段代码对您有用，如果您仍然遇到问题，请告诉我

问题是使用spring mvc和hibernate自动装配sessionfactory bean

3 个答案: