Andorid之使用GMail后台偷偷发送邮件(不要干坏事噢=。 =)

工具类:

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; 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; } public void setBody(String _body) { this._body = _body; } public String get_user() { return _user; } public void set_user(String _user) { this._user = _user; } public String get_pass() { return _pass; } public void set_pass(String _pass) { this._pass = _pass; } public String[] get_to() { return _to; } public void set_to(String[] _to) { this._to = _to; } public String get_from() { return _from; } public void set_from(String _from) { this._from = _from; } public String get_port() { return _port; } public void set_port(String _port) { this._port = _port; } public String get_sport() { return _sport; } public void set_sport(String _sport) { this._sport = _sport; } public String get_host() { return _host; } public void set_host(String _host) { this._host = _host; } public String get_subject() { return _subject; } public void set_subject(String _subject) { this._subject = _subject; } public String get_body() { return _body; } public void set_body(String _body) { this._body = _body; } public boolean is_auth() { return _auth; } public void set_auth(boolean _auth) { this._auth = _auth; } public boolean is_debuggable() { return _debuggable; } public void set_debuggable(boolean _debuggable) { this._debuggable = _debuggable; } public Multipart get_multipart() { return _multipart; } public void set_multipart(Multipart _multipart) { this._multipart = _multipart; } }

需要导入的三个包：

• mail.jar
• activation.jar
• additionnal.jar

自己程序调用，代码内有相应的注释

public void send(View v) { new Thread(){ public void run(){ // your gmail address & password 
                Mail m = new Mail("[email protected]", "123456zp"); String[] toArr = {"[email protected]", "[email protected]"}; // mail to who
 m.set_to(toArr); // mail come from
                  m.set_from("lee"); // mail's title
                  m.set_subject("This is an email sent using my Mail JavaMail wrapper from an Android device."); // mail's body
                  m.setBody("神马都没有"); try { // send attachment // m.addAttachment("/sdcard/foreveross"); 
             
                    if(m.send()) { runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub
                                Toast.makeText(MainActivity.this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); } }); } else { runOnUiThread(new Runnable() { @Override public void run() { // TODO Auto-generated method stub
                                 Toast.makeText(MainActivity.this, "Email was not sent.", Toast.LENGTH_LONG).show(); } }); } } catch(Exception e) { //Toast.makeText(MailApp.this, "There was a problem sending the email.", Toast.LENGTH_LONG).show(); 
                    Log.e("MailApp", "Could not send email", e); } } }.start(); }

附上本英文文档的描述：http://www.jondev.net/articles/Sending_Emails_without_User_Intervention_%28no_Intents%29_in_Android