Android客户端后台发送邮件（JMail)

今天在做项目的时候要处理用户注册问题，里面有个邮箱验证，网上找了一下果然有人做过，但是我拿过来都运行不起来，或者是发送不了邮件。后来我对这个浅浅的研究了一下，贴出来和大家共享。

Activity

package e.m;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MailSenderActivity extends Activity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    final Button send = (Button) this.findViewById(R.id.send);
    send.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        // TODO Auto-generated method stub
        try {
          GMailSender sender = new GMailSender("[e-mail]",
              "xxxxxx");
          sender.sendMail("This is Subject", "This is Body",
              "[e-mail]", "[e-mail]");
        } catch (Exception e) {
          Log.e("SendMail", e.getMessage(), e);
        }
      }
    });
  }
}

package e.m;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.Security;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class GMailSender extends javax.mail.Authenticator {        
    private String mailhost = "smtp.gmail.com";
    private String user;
    private String password;
    private Session session;
    static {
        Security.addProvider(new e.m.JSSEProvider());
    }
    public GMailSender(String user, String password) {
        this.user = user;
        this.password = password;
         Properties props = new Properties();
        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.host", mailhost);
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");

        props.setProperty("mail.smtp.quitwait", "false");
         session = Session.getDefaultInstance(props, this);
    } 
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, password);
    } 
    public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception {
        try{
     MimeMessage message = new MimeMessage(session);
        DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain"));
        message.setSender(new InternetAddress(sender));
        message.setSubject(subject);
        message.setDataHandler(handler);
        if (recipients.indexOf(',') > 0)
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients));
        else
           message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
        Transport.send(message);
        }catch(Exception e){ 
     } 
}  
   public class ByteArrayDataSource implements DataSource { 
       private byte[] data;
        private String type; 
        public ByteArrayDataSource(byte[] data, String type) { 
           super();
            this.data = data;
            this.type = type;
        }
         public ByteArrayDataSource(byte[] data) {
            super();
            this.data = data;
        }
         public void setType(String type) { 
           this.type = type;
        } 
        public String getContentType() {
            if (type == null)
                return "application/octet-stream";
            else
               return type; 
       }
         public InputStream getInputStream() throws IOException {
            return new ByteArrayInputStream(data);
        }
         public String getName() {
            return "ByteArrayDataSource";
        }
         public OutputStream getOutputStream() throws IOException {
            throw new IOException("Not Supported");
        }
    }
}

package e.m;

import java.security.AccessController;
import java.security.Provider;

public final class JSSEProvider extends Provider {
      public JSSEProvider() {
         super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
         AccessController.doPrivileged(new java.security.PrivilegedAction<Void>() {
             public Void run() { 
                put("SSLContext.TLS",
                         "org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
                 put("Alg.Alias.SSLContext.TLSv1", "TLS");
                 put("KeyManagerFactory.X509",
                         "org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
                 put("TrustManagerFactory.X509",
                         "org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
                 return null;
             } 
        });
     }
 }

如果是4.0以上请将以下代码放到线程中运行。

try {
          GMailSender sender = new GMailSender("[e-mail]",
              "xxxxxx");
          sender.sendMail("This is Subject", "This is Body",
              "[e-mail]", "[e-mail]");
        } catch (Exception e) {
          Log.e("SendMail", e.getMessage(), e);
        }

注意：这里我用的是google邮箱，如果要换其他邮箱，要在代码中设置相应的服务器。