用Java删除电子邮件 _用Java删除电子邮件

在发送, 转发和接收电子邮件时, 我们也可以将其删除。 Message类的setFlag方法用于删除特定消息。

为了更好地理解此示例, 请首先学习使用JavaMail API发送电子邮件的步骤。

为了使用JavaMail API接收或发送电子邮件, 你需要加载两个jar文件：mail.jar activation.jar下载这些jar文件（或）到Oracle网站下载最新版本。

使用JavaMail API删除电子邮件的步骤
删除电子邮件共有5个步骤。他们是：

获取会话对象
创建存储对象并连接到当前主机
创建文件夹对象并打开它
获取要删除的消息
使用setFlag方法删除消息

在Java中删除电子邮件的示例

import com.sun.mail.imap.protocol.FLAGS; import java.io.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; public class DeleteMail { public static void main(String args[]) throws Exception { String user= "sonoojaiswal@srcmini.com"; //change accordingly String password="xxxxx"; //change accordingly //1) get the session object Properties properties = System.getProperties(); Session session = Session.getDefaultInstance(properties); //2) create the store object and connect to the current host Store store = session.getStore("pop3"); store.connect("mail.srcmini.com", user, password); //3) create the folder object and open it Folder folder = store.getFolder("inbox"); if (!folder.exists()) { System.out.println("inbox not found"); System.exit(0); } folder.open(Folder.READ_WRITE); //4) Get the message to delete Message[] msg = folder.getMessages(); //System.out.println((messages.length+1)+" message found"); for (int i = 0; i < msg.length; i++) { System.out.println("--------- " + (i + 1) + "------------"); String from = InternetAddress.toString(msg[i].getFrom()); if (from != null) { System.out.println("From: " + from); }String replyTo = InternetAddress.toString( msg[i].getReplyTo()); if (replyTo != null) { System.out.println("Reply-to: " + replyTo); }String to = InternetAddress.toString( msg[i].getRecipients(Message.RecipientType.TO)); if (to != null) { System.out.println("To: " + to); }String subject = msg[i].getSubject(); if (subject != null) { System.out.println("Subject: " + subject); } Date sent = msg[i].getSentDate(); if (sent != null) { System.out.println("Sent: " + sent); } System.out.println("Message : "); System.out.println(msg[i].getContent()); }//end of for loop// get the message number to delete (optional) System.out.println("Enter message number to delete :"); BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String no = br.readLine(); //5) delete the message using setFlag method msg[Integer.parseInt(no) - 1].setFlag(FLAGS.Flag.DELETED, true); System.out.println("Message Deleted ....."); folder.close(true); store.close(); } }

【用Java删除电子邮件】如上例所示, 我们能够从用户邮箱中删除电子邮件。现在通过以下方式运行该程序：