使用Spring integration从imap读取电子邮件不起作用

Question

我在试一个例子。在本例中，我们提到了使用spring-integration 2.0.3，但是我得到了一个NullPointerExpetion，为了解决这个问题，我遵循了这里提到的内容。但是如果我使用Spring-Integration2.1，那么我认为它需要Spring3.0。

问题：Spring2.5版本和spring-integration是否可以使用从IMAP读取电子邮件？

以下是我的项目中设置的maven依赖项：

<dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring</artifactId>
        <version>2.5.6</version>
    </dependency>
...
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-core</artifactId>
<version>2.1.3.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-mail</artifactId>
    <version>2.1.3.RELEASE</version>
</dependency>

<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:mail="http://www.springframework.org/schema/integration/mail"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
    http://www.springframework.org/schema/integration/mail
    http://www.springframework.org/schema/integration/mail/spring-integration-mail-2.1.xsd 
    http://www.springframework.org/schema/util 
    http://www.springframework.org/schema/util/spring-util-2.0.xsd">


    <util:properties id="javaMailProperties">
    <prop key="mail.imap.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
    <prop key="mail.imap.socketFactory.fallback">false</prop>
    <prop key="mail.store.protocol">imaps</prop>
    <prop key="mail.debug">false</prop>
</util:properties>

<mail:inbound-channel-adapter id="imapAdapter"
                                  store-uri="imaps://<username>:<password>@imap.googlemail.com:993/INBOX"                                    
                                  channel="recieveEmailChannel"                                         
                                  should-delete-messages="false"
                                  should-mark-messages-as-read="true"                                     
                                  auto-startup="true"
                                  java-mail-properties="javaMailProperties">
    <int:poller fixed-delay="5" time-unit="SECONDS"/>
</mail:inbound-channel-adapter>

<int:channel id="recieveEmailChannel">        
    <int:interceptors>
        <int:wire-tap channel="logger"/>
    </int:interceptors>
</int:channel>

<int:logging-channel-adapter id="logger" level="DEBUG"/>

<int:service-activator input-channel="recieveEmailChannel" ref="emailReceiverService" method="receive"/>

<bean id="emailReceiverService" class="com.mycompany.DefaultEmailReceiverUtilService">
</bean>

EmailNotificationTest.java

public class EmailNotificationTest extends
    AbstractDependencyInjectionSpringContextTests

{

public static final String SOURCE_VERSION_ID = "$Id$";

    //Who ever wants to run this testcase ,Please uncomment this method
   protected String[] getConfigLocations()
    {
         return new String[]
        { "classpath:META-INF/spring/component.xml" };
    }

public void testSimpleEmailNotification()
{

}
}

如果运行testcase,则会收到以下异常：

org.springframework.beans.factory.beanDefinitionStoreException：从类路径资源[meta-inf/spring/component.XML]解析XML文档时出现意外异常；嵌套异常为java.lang.NoClassDeffounder错误：org/springframework.beans.factory.xml.xmlbeandefinitionreader.doloadbeandefinition(xmlbeandefinitionreader.java:420)在org.springframework.beans.factory.xml.xmlbeandefinitionreader.loadbeandefinition(xmlbeandefinitionreader.342)在Org.SpringFramework.Test.AbstractSinglePringContextTests.CreateApplicationContext（AbstractSinglePringContextTests.java:198)位于Org.SpringFramework.Test.AbstractSinglePringContextTests.LoadContextLocations（AbstractSinglePringContextTests.179)位于Org.SpringFramework.Test.AbstractSinglePringContextTests.LoadContextLocations（AbstractSinglePringContextTests.158)位于

Answer 1

我没有找到一个简单的Spring集成-->Spring版本表。以下是您可以做的：

• 转到https://repository.jboss.org/nexus/index.html#nexus-search；quick~spring-integration-core
• 选择任何版本
• 转到右下方容器中的“Maven Dependency”选项卡
• 单击“解析”链接

您将立即看到需要哪个Spring版本。例如，在Spring Integration 2.0.0中，您将看到它依赖于Spring 3.0.5。