用Java实现发送邮件到163

/*

 在java版经常看到有人问如何用javamail发送邮件？如何接收邮件？如何访问多个文件夹等。问题零散，而历史的回复早已经淹没在问题的海洋之中。

 本人之前所做过一个java项目，其中包含有WebMail功能，当初为用java实现而对javamail摸索了一段时间，总算有点收获。看到论坛中的经常有此方面的问题，因此把我的一些经验帖出来，希望对大家有些帮助。

 此篇仅介绍用javamail实现发送邮件功能，其中涉及smtp认证，邮件附件发送，及HTML内容邮件等。

 其它有关多邮箱的实现，接收POP3邮件及IMAP等内容，将在后续文章中介绍。

 如下程序需要：javamail，JAF包，j2ee.jar包含了上述两个包，建议大家安装J2SDKEE或直接拷贝j2ee.jar，将其添加到jbuilder的library中，或系统ClassPath中

 */

package com.tntxia.mymail;

import java.util.*;

import javax.mail.*;

import javax.mail.internet.*;

import java.util.Date;

import javax.activation.*;

import java.io.*;


public class sendMail {

	private MimeMessage mimeMsg; // MIME邮件对象

	private Session session; // 邮件会话对象

	private Properties props; // 系统属性

	private boolean needAuth = false; // smtp是否需要认证

	private String username = ""; // smtp认证用户名和密码

	private String password = "";

	private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

	/**

*

*/

	public sendMail() {

		// setSmtpHost(getConfig.mailHost);// 如果没有指定邮件服务器,就从getConfig类中获取

		createMimeMessage();

	}

	public sendMail(String smtp) {

		setSmtpHost(smtp);

		createMimeMessage();

	}

	/**
	 * 
	 * @param hostName
	 *            String
	 */

	public void setSmtpHost(String hostName) {

		System.out.println("设置系统属性：mail.smtp.host = " + hostName);

		if (props == null)
			props = System.getProperties(); // 获得系统属性对象

		props.put("mail.smtp.host", hostName); // 设置SMTP主机

	}

	/**
	 * 
	 * @return boolean
	 */

	public boolean createMimeMessage()

	{

		try {

			System.out.println("准备获取邮件会话对象！");

			session = Session.getDefaultInstance(props, null); // 获得邮件会话对象

		}

		catch (Exception e) {

			System.err.println("获取邮件会话对象时发生错误！" + e);

			return false;

		}

		System.out.println("准备创建MIME邮件对象！");

		try {

			mimeMsg = new MimeMessage(session); // 创建MIME邮件对象

			mp = new MimeMultipart();

			return true;

		}

		catch (Exception e) {

			System.err.println("创建MIME邮件对象失败！" + e);

			return false;

		}

	}

	/**
	 * 
	 * @param need
	 *            boolean
	 */

	public void setNeedAuth(boolean need) {

		System.out.println("设置smtp身份认证：mail.smtp.auth = " + need);

		if (props == null)
			props = System.getProperties();

		if (need) {

			props.put("mail.smtp.auth", "true");

		} else {

			props.put("mail.smtp.auth", "false");

		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public void setNamePass(String name, String pass) {

		username = name;

		password = pass;

	}

	/**
	 * 
	 * @param mailSubject
	 *            String
	 * 
	 * @return boolean
	 */

	public boolean setSubject(String mailSubject) {

		System.out.println("设置邮件主题！");

		try {

			mimeMsg.setSubject(mailSubject);

			return true;

		}

		catch (Exception e) {

			System.err.println("设置邮件主题发生错误！");

			return false;

		}

	}

	/**
	 * 
	 * @param mailBody
	 *            String
	 */

	public boolean setBody(String mailBody) {

		try {

			BodyPart bp = new MimeBodyPart();

			bp.setContent("" + mailBody, "text/html;charset=GB2312");

			mp.addBodyPart(bp);

			return true;

		}

		catch (Exception e) {

			System.err.println("设置邮件正文时发生错误！" + e);

			return false;

		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public boolean addFileAffix(String filename) {

		System.out.println("增加邮件附件：" + filename);

		try {

			BodyPart bp = new MimeBodyPart();

			FileDataSource fileds = new FileDataSource(filename);

			bp.setDataHandler(new DataHandler(fileds));

			bp.setFileName(fileds.getName());

			mp.addBodyPart(bp);

			return true;

		}

		catch (Exception e) {

			System.err.println("增加邮件附件：" + filename + "发生错误！" + e);

			return false;

		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public boolean setFrom(String from) {

		System.out.println("设置发信人！");

		try {

			mimeMsg.setFrom(new InternetAddress(from)); // 设置发信人

			return true;

		}

		catch (Exception e)

		{
			return false;
		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public boolean setTo(String to) {

		if (to == null)
			return false;

		try {

			mimeMsg.setRecipients(Message.RecipientType.TO,
					InternetAddress.parse(to));

			return true;

		}

		catch (Exception e)

		{
			return false;
		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public boolean setCopyTo(String copyto)

	{

		if (copyto == null)
			return false;

		try {

			mimeMsg.setRecipients(Message.RecipientType.CC,
					(Address[]) InternetAddress.parse(copyto));

			return true;

		}

		catch (Exception e)

		{
			return false;
		}

	}

	/**
	 * 
	 * @param name
	 *            String
	 * 
	 * @param pass
	 *            String
	 */

	public boolean sendout()

	{

		try {

			mimeMsg.setContent(mp);

			mimeMsg.saveChanges();

			System.out.println("正在发送邮件....");

			Session mailSession = Session.getInstance(props, null);

			Transport transport = mailSession.getTransport("smtp");

			transport.connect((String) props.get("mail.smtp.host"), username,
					password);

			transport.sendMessage(mimeMsg,
					mimeMsg.getRecipients(Message.RecipientType.TO));

			// transport.send(mimeMsg);

			System.out.println("发送邮件成功！");

			transport.close();

			return true;

		}

		catch (Exception e)

		{

			System.err.println("邮件发送失败！" + e);

			return false;

		}

	}

	/**
	 * 
	 * Just do it as this
	 */

	public static void main(String[] args) {

		String mailbody = "" + "csdn";

		sendMail themail = new sendMail("smtp.163.com");

		themail.setNeedAuth(true);

		if (themail.setSubject("标题") == false)
			return;

		if (themail.setBody(mailbody) == false)
			return;

		if (themail.setTo("[email protected]") == false)
			return;

		if (themail.setFrom("[email protected]") == false)
			return;

//		if (themail.addFileAffix("c:\\boot.ini") == false)
//			return;

		themail.setNamePass("********", "*********");   // 账号密码

		if (themail.sendout() == false)
			return;

	}

}