Question

当我在日志显示邮件发送时按下发送按钮但实际上邮件未发送。请帮我下面的代码。为什么不发送邮件？

GMailSender.java

package com.example.sendmail;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
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;

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

public class GMailSender extends javax.mail.Authenticator {
    private String mailhost = "smtp.gmail.com";
    private String user;
    private String password;
    private Session session;

    private Multipart _multipart = new MimeMultipart();
    static {
        Security.addProvider(new com.example.sendmail.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);
            BodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText(body);
            _multipart.addBodyPart(messageBodyPart);

            // Put parts in message
            message.setContent(_multipart);
            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 void addAttachment(String filename) throws Exception {
        BodyPart messageBodyPart = new MimeBodyPart();
        DataSource source = new FileDataSource(filename);
        messageBodyPart.setDataHandler(new DataHandler(source));
        messageBodyPart.setFileName("download image");

        _multipart.addBodyPart(messageBodyPart);
    }

    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");
        }
    }
}

JSSEProvider.java

package com.example.sendmail;

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;
                    }
                });
    }
}

MainActivity.java

package com.example.sendmail;

import android.os.Bundle;
import android.os.Environment;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

 public class MainActivity extends Activity {
    Button send;
//String filename = "/sdcard/mysdfile";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        send = (Button) findViewById(R.id.send);
        send.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                new Thread(new Runnable() {
                    @SuppressLint("SdCardPath") public void run() {
                        try {
                            GMailSender sender = new GMailSender("sendermail@gmail.com","**password***");
                            ///Toast.makeText(getApplicationContext(), "Connect", Toast.LENGTH_LONG).show();
                            //sender.addAttachment(filename);
                            sender.addAttachment(Environment.getExternalStorageDirectory().getPath()+"/sdcard/mysdfile.txt");
                            sender.sendMail("Test mail", "This mail has been sent from android app along with attachment","sendermail@gmail.com",
                                    "recievermail@yahoo.com");

                            Log.i("Mail", "Sent");
                            //Toast.makeText(getApplicationContext(),"Your mail has been sent",Toast.LENGTH_LONG).show();


                        } catch (Exception e) {
                            runOnUiThread(new Runnable() 
                            {
                                public void run() 
                                {
                                    Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();    
                                }
                            }); 

                            Log.i("Mail", "Failed"+e);
                            //Toast.makeText(getApplicationContext(),"Error",Toast.LENGTH_LONG).show();

                        }
                    }
                }).start();

                send.setText("Ok");
            }
        });

    }

}

不会出现错误，也不会在发件人邮件中发送邮件，也不会在收件人邮件收件箱中发送邮件。

Answer 1

您需要导入lib BackgroundMailLibrary

 BackgroundMail bm = new BackgroundMail(PasswordChangeActivity.this);
                                            bm.setGmailUserName(mail id);
                                            bm.setGmailPassword(Utils.decryptIt(password)); 
                                            bm.setMailTo(ownerEmail);
                                            bm.setFormSubject(subject);
                                            bm.setFormBody(body);
                                            bm.send();

Answer 2

MainActivity.java

点击按钮点击::

String fromEmail = "sample@gmail.com";
                            String fromPassword = "xxxxxx";
                            String toEmails = to_sample@gmail.com;
                            String adminEmail = "admin@gmail.com";
                            String emailSubject = "App Registration Mail";
                            String adminSubject = "App Registration Mail";
                            String emailBody = "Your message";
                            String adminBody = "Your message";
                            new SendMailTask(YOurActivity.this).execute(fromEmail,
                                    fromPassword, toEmails, emailSubject, emailBody);

GMail.java

import java.io.UnsupportedEncodingException;
import java.util.List;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import android.app.AlertDialog.Builder;
import android.util.Log;

public class GMail {

    final String emailPort = "587";// gmail's smtp port
    final String smtpAuth = "true";
    final String starttls = "true";
    final String emailHost = "smtp.gmail.com";

    String fromEmail;
    String fromPassword;
    @SuppressWarnings("rawtypes")
    String toEmailList;
    String emailSubject;
    String emailBody;

    Properties emailProperties;
    Session mailSession;
    MimeMessage emailMessage;

    public GMail() {

    }

    @SuppressWarnings("rawtypes")
    public GMail(String fromEmail, String fromPassword,
            String toEmailList, String emailSubject, String emailBody) {
        this.fromEmail = fromEmail;
        this.fromPassword = fromPassword;
        this.toEmailList = toEmailList;
        this.emailSubject = emailSubject;
        this.emailBody = emailBody;

        emailProperties = System.getProperties();
        emailProperties.put("mail.smtp.port", emailPort);
        emailProperties.put("mail.smtp.auth", smtpAuth);
        emailProperties.put("mail.smtp.starttls.enable", starttls);
        Log.i("GMail", "Mail server properties set.");
    }

    public MimeMessage createEmailMessage() throws AddressException,
            MessagingException, UnsupportedEncodingException {

        mailSession = Session.getDefaultInstance(emailProperties, null);
        emailMessage = new MimeMessage(mailSession);

        emailMessage.setFrom(new InternetAddress(fromEmail, fromEmail));

            Log.i("GMail","toEmail: "+toEmailList);
            emailMessage.addRecipient(Message.RecipientType.TO,
                    new InternetAddress(toEmailList));


        emailMessage.setSubject(emailSubject);
        emailMessage.setContent(emailBody, "text/html");// for a html email
        // emailMessage.setText(emailBody);// for a text email
        Log.i("GMail", "Email Message created.");
        return emailMessage;
    }

    public void sendEmail() throws AddressException, MessagingException {

        Transport transport = mailSession.getTransport("smtp");
        transport.connect(emailHost, fromEmail, fromPassword);
        Log.i("GMail","allrecipients: "+emailMessage.getAllRecipients());
        transport.sendMessage(emailMessage, emailMessage.getAllRecipients());
        transport.close();
        Log.i("GMail", "Email sent successfully.");

    }


}

SendMailTask.java：

import java.util.List;

import android.app.Activity;
import android.app.ProgressDialog;
import android.app.AlertDialog.Builder;
import android.os.AsyncTask;
import android.util.Log;

@SuppressWarnings("rawtypes")
public class SendMailTask extends AsyncTask {

    private ProgressDialog statusDialog;
    private Activity sendMailActivity;

    public SendMailTask(Activity activity) {
        sendMailActivity = activity;

    }

    protected void onPreExecute() {
        statusDialog = new ProgressDialog(sendMailActivity);
        statusDialog.setMessage("Getting ready...");
        statusDialog.setIndeterminate(false);
        statusDialog.setCancelable(false);
        statusDialog.show();
    }

    @SuppressWarnings("unchecked")
    @Override
    protected Object doInBackground(Object... args) {
        try {
            Log.i("SendMailTask", "About to instantiate GMail...");
            publishProgress("Processing input....");
            GMail androidEmail = new GMail(args[0].toString(),
                    args[1].toString(),  args[2].toString(), args[3].toString(),
                    args[4].toString());
            publishProgress("Preparing mail message....");
            androidEmail.createEmailMessage();
            publishProgress("Sending email....");
            androidEmail.sendEmail();
            publishProgress("Email Sent.");
            Log.i("SendMailTask", "Mail Sent.");

            Config.mailSuccess="1";


        } catch (Exception e) {
            publishProgress(e.getMessage());
            Log.e("SendMailTask", e.getMessage(), e);
        }
        return null;
    }

    @Override
    public void onProgressUpdate(Object... values) {
        statusDialog.setMessage(values[0].toString());

    }

    @Override
    public void onPostExecute(Object result) {
        statusDialog.dismiss();
    }


}

Library files

Answer 3

从后台发送邮件......

您可以使用javaMail从后台发送邮件
首先你需要添加这三个.jar文件...
下载这些jar文件

（1）Activation.jar ：http://www.java2s.com/Code/Jar/a/Downloadactivationjar.htm
（2）Additionnal.jar： http://code.google.com/p/javamail-android/downloads/detail?name=additionnal.jar&can=2&q=
（3）mail.jar： http://www.java2s.com/Code/Jar/m/Downloadmailjar.htm

然后使用以下代码：
的 MainActivity.java

import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.PasswordAuthentication; import javax.mail.SendFailedException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import android.app.Activity; import android.app.ProgressDialog; import android.os.AsyncTask; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class MainActivity extends Activity{ EditText email_to,subjectEdit,messageEdit; Button mailButton; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initialize(); mailButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { sendMail(); } }); } private void initialize() { email_to=(EditText)findViewById(R.id.editText_to); subjectEdit=(EditText)findViewById(R.id.editText_Subject); messageEdit=(EditText)findViewById(R.id.editText_Message); mailButton=(Button)findViewById(R.id.btn_SendMail); } protected void sendMail() { final String username = "Your Gmail Id "; final String password = "Your Gmail password"; Properties props = new Properties(); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.starttls.enable", "true"); props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.smtp.port", "587"); Session session = Session.getInstance(props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }); try { Message message = new MimeMessage(session); message.setFrom(new InternetAddress(username)); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(email_to.getText().toString())); message.setSubject("Sent from MobileApp" + subjectEdit.getText().toString()); message.setText("Message : ," + "\n\n"+ messageEdit.getText().toString()); new SendMailTask().execute(message); }catch (MessagingException mex) { mex.printStackTrace(); } } private class SendMailTask extends AsyncTask<Message,String, String> { private ProgressDialog progressDialog; @Override protected void onPreExecute() { super.onPreExecute(); progressDialog = ProgressDialog.show(MainActivity.this,null, "Sending mail", true, false); } @Override protected String doInBackground(Message... messages) { try { Transport.send(messages[0]); return "Success"; } catch(SendFailedException ee) { if(progressDialog.isShowing()) progressDialog.dismiss(); return "error1"; }catch (MessagingException e) { if(progressDialog.isShowing()) progressDialog.dismiss(); return "error2"; } } @Override protected void onPostExecute(String result) { if(result.equals("Success")) { super.onPostExecute(result); progressDialog.dismiss(); Toast.makeText(MainActivity.this, "Mail Sent Successfully", Toast.LENGTH_LONG).show(); subjectEdit.setText(""); messageEdit.setText(""); } else if(result.equals("error1")) Toast.makeText(MainActivity.this, "Email Failure", Toast.LENGTH_LONG).show(); else if(result.equals("error2")) Toast.makeText(MainActivity.this, "Email Sent problem2", Toast.LENGTH_LONG).show(); } } }

的 activity_main.xml中

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.ar.MainActivity" > <EditText android:id="@+id/editText_to" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="To " > <requestFocus android:layout_width="wrap_content" android:layout_height="wrap_content" /> </EditText> <EditText android:id="@+id/editText_Subject" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Subject" > </EditText> <EditText android:id="@+id/editText_Message" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="Message" /> <Button android:id="@+id/btn_SendMail" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Send Mail" /> </LinearLayout>

AndroidManifest.xml
仅添加此权限...

<uses-permission android:name="android.permission.INTERNET" />

Answer 4

添加您的清单文件:::

<uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="com.android.email.permission.READ_ATTACHMENT"/>

在Android中的后台自动发送邮件

4 个答案: