android下邮件发送开源组件：javamail-android_仿outlook andorid开源-优快云博客

本文介绍如何使用JavaMail API在Android设备上发送包含附件的电子邮件，包括类库的引入、配置步骤及示例代码。通过实例演示了如何设置邮件参数、添加收件人、发送邮件及附加文件。

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说明

JavaMail，顾名思义，提供给开发者处理电子邮件相关的编程接口。它是Sun发布的用来处理email的API。它可以方便地执行一些常用的邮件传输。我们可以基于JavaMail开发出类似于Microsoft Outlook的应用程序。

官网

http://code.google.com/p/javamail-android/

使用

email类的实现（在官方example上增加了点东西）：

package net.shouyong.common;


import java.util.Date;
import java.util.Properties;
import javax.activation.CommandMap;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.activation.MailcapCommandMap;
import javax.mail.BodyPart;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * @author shouyong
 * @version 1.0 at 2014-2-23 email实现类(原文：http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_%28no_Intents%29_in_Android)。
 */
public class Mail extends javax.mail.Authenticator {
	private String _user;
	private String _pass;

	private String[] _to;
	private String _from;

	private String _port;
	private String _sport;

	private String _host;

	private String _subject;
	private String _body;

	private boolean _auth;

	private boolean _debuggable;

	private Multipart _multipart;

	public Mail() {
		_host = "smtp.gmail.com"; // default smtp server
		_port = "465"; // default smtp port
		_sport = "465"; // default socketfactory port

		_user = ""; // username
		_pass = ""; // password
		_from = ""; // email sent from
		_subject = ""; // email subject
		_body = ""; // email body

		_debuggable = false; // debug mode on or off - default off
		_auth = true; // smtp authentication - default on

		_multipart = new MimeMultipart();

		// There is something wrong with MailCap, javamail can not find a
		// handler for the multipart/mixed part, so this bit needs to be added.
		MailcapCommandMap mc = (MailcapCommandMap) CommandMap
				.getDefaultCommandMap();
		mc.addMailcap("text/html;; x-java-content-handler=com.sun.mail.handlers.text_html");
		mc.addMailcap("text/xml;; x-java-content-handler=com.sun.mail.handlers.text_xml");
		mc.addMailcap("text/plain;; x-java-content-handler=com.sun.mail.handlers.text_plain");
		mc.addMailcap("multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed");
		mc.addMailcap("message/rfc822;; x-java-content-handler=com.sun.mail.handlers.message_rfc822");
		CommandMap.setDefaultCommandMap(mc);
	}

	public Mail(String user, String pass) {
		this();

		_user = user;
		_pass = pass;
	}

	public boolean send() throws Exception {
		Properties props = _setProperties();

		if (!_user.equals("") && !_pass.equals("") && _to.length > 0
				&& !_from.equals("") && !_subject.equals("")
				&& !_body.equals("")) {
			Session session = Session.getInstance(props, this);

			MimeMessage msg = new MimeMessage(session);

			msg.setFrom(new InternetAddress(_from));

			InternetAddress[] addressTo = new InternetAddress[_to.length];
			for (int i = 0; i < _to.length; i++) {
				addressTo[i] = new InternetAddress(_to[i]);
			}
			msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);

			msg.setSubject(_subject);
			msg.setSentDate(new Date());

			// setup message body
			BodyPart messageBodyPart = new MimeBodyPart();
			messageBodyPart.setText(_body);
			_multipart.addBodyPart(messageBodyPart);

			// Put parts in message
			msg.setContent(_multipart);

			// send email
			Transport.send(msg);

			return true;
		} else {
			return false;
		}
	}

	public void addAttachment(String filename) throws Exception {
		BodyPart messageBodyPart = new MimeBodyPart();
		DataSource source = new FileDataSource(filename);
		messageBodyPart.setDataHandler(new DataHandler(source));
		messageBodyPart.setFileName(filename);

		_multipart.addBodyPart(messageBodyPart);
	}

	@Override
	public PasswordAuthentication getPasswordAuthentication() {
		return new PasswordAuthentication(_user, _pass);
	}

	private Properties _setProperties() {
		Properties props = new Properties();

		props.put("mail.smtp.host", _host);

		if (_debuggable) {
			props.put("mail.debug", "true");
		}

		if (_auth) {
			props.put("mail.smtp.auth", "true");
		}

		props.put("mail.smtp.port", _port);
		props.put("mail.smtp.socketFactory.port", _sport);
		props.put("mail.smtp.socketFactory.class",
				"javax.net.ssl.SSLSocketFactory");
		props.put("mail.smtp.socketFactory.fallback", "false");

		return props;
	}

	// the getters and setters
	public String getBody() {
		return _body;
	}

	/**
	 * 设置邮件内容。
	 * @param _body
	 */
	public void setBody(String _body) {
		this._body = _body;
	}

	public String[] getTo() {
		return _to;
	}

	/**
	 * 设置收件人。
	 * @param _to
	 */
	public void setTo(String[] _to) {
		this._to = _to;
	}

	/**
	 * 设置发件人
	 * @param _from
	 */
	public void setFrom(String _from) {
		this._from = _from;
	}

	/**
	 * 设置邮件标题。
	 * @param _subject
	 */
	public void setSubject(String _subject) {
		this._subject = _subject;
	}
}

发送邮件

	private void sendMail(){
		Mail m = new Mail("example@gmail.com", "passwdf");

		String[] toArr = { "enlangs@163.com", "abcdef@163.com" };
		m.setTo(toArr);
		m.setFrom("example@gmail.com");
		m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
		m.setBody("Email body.");

		try {
			m.addAttachment("/data/nkc_jdt_big.jpg");

			if (m.send()) {
				Toast.makeText(this, "Email was sent successfully.",
						Toast.LENGTH_LONG).show();
			} else {
				Toast.makeText(this, "Email was not sent.",
						Toast.LENGTH_LONG).show();
			}
		} catch (Exception e) {
			e.printStackTrace();
			Log.e("MailApp", "Could not send email", e);
		}
	}