如何使用java訪問gmail中的標籤文件夾？

我們可以從Gmail收件箱閱讀郵件，但是我們是否可以從標籤中讀取？如果我從http://harikrishnan83.wordpress.com/2009/01/24/access-gmail-with-imap-using-java-mail-api/如何使用java訪問gmail中的標籤文件夾？

import java.util.Properties; 

import javax.mail.Folder; 
import javax.mail.Message; 
import javax.mail.MessagingException; 
import javax.mail.NoSuchProviderException; 
import javax.mail.Session; 
import javax.mail.Store; 

public class InboxReader { 

    public static void main(String args[]) { 
     Properties props = System.getProperties(); 
     props.setProperty("mail.store.protocol", "imaps"); 
     try { 
      Session session = Session.getDefaultInstance(props, null); 
      Store store = session.getStore("imaps"); 
      store.connect("imap.gmail.com", "<username>", "password"); 
      System.out.println(store); 

      Folder inbox = store.getFolder("Inbox"); 
      inbox.open(Folder.READ_ONLY); 
      Message messages[] = inbox.getMessages(); 
      for(Message message:messages) { 
       System.out.println(message); 
      } 
     } catch (NoSuchProviderException e) { 
      e.printStackTrace(); 
      System.exit(1); 
     } catch (MessagingException e) { 
      e.printStackTrace(); 
      System.exit(2); 
     } 

    } 

}

下面的例子如果我改變「收件箱」，由它拋出一個錯誤標籤名稱：收件箱中是找不到的。請幫忙嗎？

來源

2014-10-27 kirk douglas

因此，在這一行： '文件夾的收件箱= store.getFolder（「收件箱」）;' 你可以嘗試這樣的事： 'Folder inbox = store.getFolder（「FolderNameGoesHere」）;' – ryekayo 2014-10-27 22:06:01

With inbox = store.getFolder（「folderA」）;結果是CONTENT：[email protected]，內容不是字符串 – 2014-10-28 02:33:14

我的問題已通過msg.writeTo（System.out）解決; msg.setFlag（Flags.Flag.DELETED，true）; – 2014-10-28 02:50:00

試試下面的代碼爲我工作：

store.getFolder("FolderNameGoesHere"); 

private static Store getConnection() throws MessagingException { 
    Properties properties; 
    Session session; 
    Store store; 
    properties = new Properties(); 
    properties.setProperty("mail.host", "imap.gmail.com"); 
    properties.setProperty("mail.port", "995"); 
    properties.setProperty("mail.transport.protocol", "imaps"); 
    session = Session.getInstance(properties, 
            new javax.mail.Authenticator() { 
             protected PasswordAuthentication getPasswordAuthentication() { 
              return new PasswordAuthentication("[email protected]", 
                      "dummy"); 
             } 
            }); 
    store = session.getStore("imaps"); 
    store.connect(); 
    return store; 

} 

public static boolean isMailReceivedBySubject(String subject,String folder) throws MessagingException { 
    Store store = null; 
    boolean emailReceived = false; 
    try { 
     store = getConnection(); 
     Folder mailFolder = store.getFolder(folder); 
     mailFolder.open(Folder.READ_WRITE); 
     SearchTerm st = new AndTerm(new SubjectTerm(subject), new BodyTerm(subject)); 
     Message[] messages = mailFolder.search(st); 
     for (Message message : messages) { 
      System.out.println("message : " + message.getSubject()); 
      if (message.getSubject().contains(subject)) { 
       System.out.println("Found the email subject : " + subject); 
       emailReceived = true; 
       break; 
      } 
     } 
     return emailReceived; 
    }finally { 
     if (store != null) { 
      store.close(); 
     } 
    } 
}

來源

2015-02-24 14:46:24

如何使用java訪問gmail中的標籤文件夾？

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