如何使用JavaMail获取邮件帐户中可用文件夹的列表 [英] How to get the list of available folders in a mail account using JavaMail

问题描述

我使用JavaMail API连接到我的个人帐户。我有我创建的Gmail帐户中的文件夹（标签）列表+收件箱，草稿等默认文件夹。如何列出所有可用文件夹（默认和用户创建的）？

我可以使用此API访问特定文件夹： Folder inbox = store.getFolder（Inbox）; 。是否有任何其他API可以获取邮件帐户中可用的文件夹列表？

解决方案

以下是可用的代码。这会让你处理所有的标签。要深入文件夹，您可以执行 folder.list（），或者您可以使用 store.getDefaultFolder（）。list（*）来检索所有的文件夹和子文件夹，如其他答案中所建议的。

  Properties props = System.getProperties（）; 
 props.setProperty（mail.store.protocol，imaps）; 
 Session session = Session.getDefaultInstance（props，null）; 
 Store store = session.getStore（imaps）; 
 store.connect（imap.gmail.com，[e-mail]，UR_P @ ZZWRD）; 
 System.out.println（store）; 
 
 Folder [] f = store.getDefaultFolder（）。list（）; 
 for（Folder fd：f）
 System.out.println（>>+ fd.getName（））; 
  

输出：

>> INBOX

>>个人

单元
>>收据
¥b $ b>> Travel

>>工作

>> [Gmail]

---

OLD ANSWER

请注意这是不正确的，正确地指出本答案 dkarp

这些应该是：

http://java.sun.com/products/javamail/javadocs /javax/mail/Store.html#getSharedNamespaces%28%29

http://java.sun.com/products/javamail/javadocs/javax/mail/Store .html＃getUserNamespaces％28java.lang.String％29

I am using JavaMail API to connect to my personal account. I have list of folders (labels) in my Gmail account which I created + the default folders like Inbox, Drafts etc. How can I list all the available folders (the default and the user created)?

I can access the particular folder using this API: Folder inbox = store.getFolder("Inbox");. Is there any other API to get the list of folders available in a mail account?

解决方案

Here is the code that works. This will give you handle to all the Labels. To go deeper in a folder, you may perform folder.list() or you can use store.getDefaultFolder().list("*") to retrieve all the folders and sub-folders as suggested in the other answer.

Properties props = System.getProperties();
props.setProperty("mail.store.protocol", "imaps");
Session session = Session.getDefaultInstance(props, null);
Store store = session.getStore("imaps");
store.connect("imap.gmail.com", "[e-mail]", "UR_P@ZZWRD");
System.out.println(store);

Folder[] f = store.getDefaultFolder().list();
for(Folder fd:f)
    System.out.println(">> "+fd.getName());

Output:

>> INBOX
>> Personal
>> Receipts
>> Travel
>> Work
>> [Gmail]

---

OLD ANSWER

Please note this is not correct, it's rightly pointed in this answer by dkarp

These should do:

http://java.sun.com/products/javamail/javadocs/javax/mail/Store.html#getSharedNamespaces%28%29

http://java.sun.com/products/javamail/javadocs/javax/mail/Store.html#getUserNamespaces%28java.lang.String%29

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