JavaMail学习笔记(四)、使用POP3协议接收并解析电子邮件(全)
[java]
package org.yangxin.study.jm;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Flags;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
/**
* 使用POP3协议接收邮件
*/
public class POP3ReceiveMailTest {
public static void main(String[] args) throws Exception {
receive();
}
/**
* 接收邮件
*/
public static void receive() throws Exception {
// 准备连接服务器的会话信息
Properties props = new Properties();
props.setProperty("mail.store.protocol", "pop3"); // 协议
props.setProperty("mail.pop3.port", "110"); // 端口
props.setProperty("mail.pop3.host", "pop3.163.com"); // pop3服务器
// 创建Session实例对象
Session session = Session.getInstance(props);
Store store = session.getStore("pop3");
store.connect("xyang0917@163.com", "123456abc");
// 获得收件箱
Folder folder = store.getFolder("INBOX");
/* Folder.READ_ONLY:只读权限
* Folder.READ_WRITE:可读可写(可以修改邮件的状态)
*/
folder.open(Folder.READ_WRITE); //打开收件箱
// 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数
System.out.println("未读邮件数: " + folder.getUnreadMessageCount());
// 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0
System.out.println("删除邮件数: " + folder.getDeletedMessageCount());
System.out.println("新邮件: " + folder.getNewMessageCount());
// 获得收件箱中的邮件总数
System.out.println("邮件总数: " + folder.getMessageCount());
// 得到收件箱中的所有邮件,并解析
Message[] messages = folder.getMessages();
parseMessage(messages);
//释放资源
folder.close(true);
store.close();
}
/**
* 解析邮件
* @param messages 要解析的邮件列表
*/
public static void parseMessage(Message ...messages) throws MessagingException, IOException {
if (messages == null || messages.length < 1)
throw new MessagingException("未找到要解析的邮件!");
// 解析所有邮件
for (int i = 0, count = messages.length; i < count; i++) {
MimeMessage msg = (MimeMessage) messages[i];
System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- ");
System.out.println("主题: " + getSubject(msg));
System.out.println("发件人: " + getFrom(msg));
System.out.println("收件人:" + getReceiveAddress(msg, null));
System.out.println("发送时间:" + getSentDate(msg, null));
System.out.println("是否已读:" + isSeen(msg));
System.out.println("邮件优先级:" + getPriority(msg));
System.out.println("是否需要回执:" + isReplySign(msg));
System.out.println("邮件大小:" + msg.getSize() * 1024 + "kb");
boolean isContainerAttachment = isContainAttachment(msg);
System.out.println("是否包含附件:" + isContainerAttachment);
if (isContainerAttachment) {
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补充:软件开发 , Java ,