Spring integration Spring集成IMAP-文件夹关闭异常

我试图使用spring集成获得基本的Imapmailreceiver，但我偶然发现了一个粘性文件夹关闭异常。 在阅读电子邮件内容时，我经常遇到文件夹关闭异常，但我能够正确获取主题

非常感谢您的帮助

1。我的应用程序上下文如下所示

<int:channel id="emails"/>

<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>
<int-mail:imap-idle-channel-adapter id="mailAdapter"
                             store-uri="ACTUALCREDENTIALHERE"
                              java-mail-properties="javaMailProperties"
                              channel="emails"
                              should-delete-messages="true"
                              auto-startup="false"
                              should-mark-messages-as-read="true" />
<int:service-activator id="receiveEmail" input-channel="emails" ref="MessageReceiver"/>
<bean id="MessageReceiver" class="org.springframework.integration.mail.imapidle.MessageReceiver" />
</beans>

    ApplicationContext ac = new ClassPathXmlApplicationContext("/META-INF/spring/integration/gmail.xml");


 ImapIdleChannelAdapter ic=(ImapIdleChannelAdapter)ac
    .getBean("mailAdapter");

    ic.start();

public class MessageReceiver {
    public void handle(javax.mail.Message message){
        MailToStringTransformer m2s = new MailToStringTransformer();
            m2s.setCharset("utf-8");


//payload instanceof MimeMultipart
            if (message instanceof MimeMessage) {
                try {
                 System.out.println("inside mimemessagehandler");
                   // javax.mail.Message mailMessage = (javax.mail.Message) payload;
                    System.out.println(message.getSubject());
                    System.out.println(getTextFromMessage(message));

                    Address[] receipts = message.getAllRecipients();
                    System.out.println("RECEIPIENTS MAIL ID");
                    if (receipts != null && receipts.length > 0) {
                        for (int i = 0; i < receipts.length; i++) {
                            System.out.println(((InternetAddress) receipts[i]).getAddress());
                        }
                    }

                    System.out.println("FROM MAIL ID");
                    Address[] froms = message.getFrom();
                    String email = froms == null ? null
                            : ((InternetAddress) froms[0]).getAddress();
                    System.out.println(email);

                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }

        }



    private static  String getTextFromMessage(javax.mail.Message message) throws Exception {
    String result = "";
    if (message.isMimeType("text/plain")) {
        result = message.getContent().toString();
    } else if (message.isMimeType("multipart/*")) {
        MimeMultipart mimeMultipart = (MimeMultipart) message.getContent();
        result = getTextFromMimeMultipart(mimeMultipart);
    }
    return result;
}

private static String getTextFromMimeMultipart(MimeMultipart mimeMultipart) throws Exception {
    String result = "";

    int count = mimeMultipart.getCount();
    System.out.println("CCC "+count);
    for (int i = 0; i < count; i++) {
       // mimeMultipart.toString()
        BodyPart bodyPart = mimeMultipart.getBodyPart(i);
        if (bodyPart.isMimeType("text/plain")) {
           result = mimeMultipart.toString();//(String) bodyPart.getContent();

        } else if (bodyPart.isMimeType("text/html")) {
            String html = (String) bodyPart.getContent();
            // result = result + "\n" + org.jsoup.Jsoup.parse(html).text();
        } else if (bodyPart.getContent() instanceof MimeMultipart) {
            result = result + getTextFromMimeMultipart((MimeMultipart) bodyPart.getContent());
        }
    }
    return result;
}

}

3。服务激活器如下所示

<int:channel id="emails"/>

<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>
<int-mail:imap-idle-channel-adapter id="mailAdapter"
                             store-uri="ACTUALCREDENTIALHERE"
                              java-mail-properties="javaMailProperties"
                              channel="emails"
                              should-delete-messages="true"
                              auto-startup="false"
                              should-mark-messages-as-read="true" />
<int:service-activator id="receiveEmail" input-channel="emails" ref="MessageReceiver"/>
<bean id="MessageReceiver" class="org.springframework.integration.mail.imapidle.MessageReceiver" />
</beans>

    ApplicationContext ac = new ClassPathXmlApplicationContext("/META-INF/spring/integration/gmail.xml");


 ImapIdleChannelAdapter ic=(ImapIdleChannelAdapter)ac
    .getBean("mailAdapter");

    ic.start();

public class MessageReceiver {
    public void handle(javax.mail.Message message){
        MailToStringTransformer m2s = new MailToStringTransformer();
            m2s.setCharset("utf-8");


//payload instanceof MimeMultipart
            if (message instanceof MimeMessage) {
                try {
                 System.out.println("inside mimemessagehandler");
                   // javax.mail.Message mailMessage = (javax.mail.Message) payload;
                    System.out.println(message.getSubject());
                    System.out.println(getTextFromMessage(message));

                    Address[] receipts = message.getAllRecipients();
                    System.out.println("RECEIPIENTS MAIL ID");
                    if (receipts != null && receipts.length > 0) {
                        for (int i = 0; i < receipts.length; i++) {
                            System.out.println(((InternetAddress) receipts[i]).getAddress());
                        }
                    }

                    System.out.println("FROM MAIL ID");
                    Address[] froms = message.getFrom();
                    String email = froms == null ? null
                            : ((InternetAddress) froms[0]).getAddress();
                    System.out.println(email);

                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }

            }

        }



    private static  String getTextFromMessage(javax.mail.Message message) throws Exception {
    String result = "";
    if (message.isMimeType("text/plain")) {
        result = message.getContent().toString();
    } else if (message.isMimeType("multipart/*")) {
        MimeMultipart mimeMultipart = (MimeMultipart) message.getContent();
        result = getTextFromMimeMultipart(mimeMultipart);
    }
    return result;
}

private static String getTextFromMimeMultipart(MimeMultipart mimeMultipart) throws Exception {
    String result = "";

    int count = mimeMultipart.getCount();
    System.out.println("CCC "+count);
    for (int i = 0; i < count; i++) {
       // mimeMultipart.toString()
        BodyPart bodyPart = mimeMultipart.getBodyPart(i);
        if (bodyPart.isMimeType("text/plain")) {
           result = mimeMultipart.toString();//(String) bodyPart.getContent();

        } else if (bodyPart.isMimeType("text/html")) {
            String html = (String) bodyPart.getContent();
            // result = result + "\n" + org.jsoup.Jsoup.parse(html).text();
        } else if (bodyPart.getContent() instanceof MimeMultipart) {
            result = result + getTextFromMimeMultipart((MimeMultipart) bodyPart.getContent());
        }
    }
    return result;
}

}

---

嗯，如果

文件夹

已关闭，我们似乎无法从

MimeBodyPart

获取内容。在

AbstractMailReceiver.receive（）中，我们似乎正好遇到了这种情况：

不确定为什么我们在接收到dowstream后但在发送dowstream之前关闭该文件夹，但是我建议您尝试使用
DefaultMailHeaderMapper
作为
ImapMailReceiver
。在这种情况下，
MimeMessage
的内容在所述的
AbstractMailReceiver.receive（）中内部转换为
org.springframework.messaging.Message
：

if（this.headerMapper！=null）{
org.springframework.messaging.Message[]已转换=
新的org.springframework.messaging.Message[filteredMessages.length]；
int n=0；
for（mimessage消息：filteredMessages）{
映射头=this.headerMapper.toHeaders（消息）；
转换后的[n++]=getMessageBuilderFactory（）.withPayload（提取内容（消息、标题））
.CopyHeader（标题）
.build（）；
}
转换收益；
}

同时，请在这件事上提出一个建议，我们考虑修复<代码>文件夹。在我的最佳感觉中，根本不应该这样做，或者我们应该将其作为标题提供给最终用户，让他/她决定何时何地关闭文件夹（如果是）。
您需要显示完整的堆栈跟踪；您还可以通过将
mail.debug
设置为
true
来获得一些线索。另外，为什么在
org.springframework.integration.mail
下的包中有用户类？真奇怪。用户类应该在自己的（非框架）包中。@GaryRussell，请看一下我的答案。@GaryRussell完整堆栈跟踪也有同样的问题，无法删除收到的电子邮件，因为接收函数“删除邮件”中的文件夹已关闭？看起来和这个问题无关。我们之前讨论过
getContent（）
，是的，但我知道，在关闭文件夹之后，所有检索到的电子邮件都无法更改，例如，我希望在其中一封电子邮件上设置删除标志（为了应用它，我应该调用folder.expunge方法），但该文件夹已在检索函数中关闭。目的是什么？请把所有这些问题和顾虑转移到JIRA身上。SO在这件事上还没有价值。@ArtemBilan您能给我举个例子，从配置文件的通道适配器中获取headerMapper吗