JAVAMAIL

因为项目需要要发送邮件：所以写了一个javamail的demo：

public class Mail {

	// 21-30行把本程序所用变量进行定义。 具体在main中对它们赋植。
	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 Mail(String smtp) {
		setSmtpHost(smtp);
		createMimeMessage();
	}

	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);
	}

	public boolean createMimeMessage() {
		boolean flag = false;
		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);
			flag = 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(); // mp 一个multipart对象
			flag = true;
		} catch (Exception e) {
			System.err.println("创建MIME邮件对象失败！" + e);
			flag = false;
		}
		return flag;
	}

	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");
			props.put("mail.smtp.quitwait", "false");
		} else {
			props.put("mail.smtp.auth", "false");
			props.put("mail.smtp.quitwait", "false");
		}
	}

	public void setNamePass(String name, String pass) {
		System.out.println("程序得到用户名与密码");
		username = name;
		password = pass;
	}

	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;
		}
	}

	public boolean setBody(String mailBody) {
		try {
			System.out.println("设置邮件体格式");
			BodyPart bp = new MimeBodyPart();
			bp.setContent(
					"<meta http-equiv=Content-Type content=text/html; charset=gb2312>"
							+ 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;
		}
	}
	
	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;
		}
	}
	
	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;
		}
	}
	
	public boolean setTo(String to){
		System.out.println("设置收信人");
		if (to == null){
			return false;
		}
		try {
			mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
			return true;
		} catch (Exception e) {
			return false;
		}
	}
	
	public boolean setCopyTo(String copyto){
		System.out.println("发送附件到");
		if (copyto == null)
			return false;
		try {
			mimeMsg.setRecipients(Message.RecipientType.CC,
					(Address[]) InternetAddress.parse(copyto));
					return true;
		} catch (Exception e) {
			return false;
		}
	}
	
	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;
		}
	}
	
	public static void main(String[] args){
		String mailbody = "测试1";
		Mail themail = new Mail("mail.petrochina");
		themail.setNeedAuth(true);
		if (themail.setSubject("邮件测试") == false)
		return;
		//邮件内容 支持html 如 <font color=red>欢迎光临</font> <a href=\"http://www.laabc.com\">啦ABC</a>
		if (themail.setBody(mailbody) == false)
		return;
		//收件人邮箱
		if (themail.setTo("[e-mail]") == false)
		return;
		//发件人邮箱
		if (themail.setFrom("[e-mail]") == false)
		return;
		//设置附件
		//if (themail.addFileAffix("#######") == false)
		//return; // 附件在本地机子上的绝对路径
		themail.setNamePass("qijinxiangerp", "qijinxiangerp"); // 用户名与密码
		if(themail.sendout()== false)
		return;
	}
}

附件是使用的javamail的包
是：javamail 和activation 的包 sun网站有下载