android自动发送电子邮件

Question

我想自动发送电子邮件（无用户界面）。当我执行该应用程序时，我没有错误，但是当我检查收件箱时，我没有发现任何电子邮件

MainActivity：

 public void onClick(View v) {
       // TODO Auto-generated method stub

       try {   
            GMailSender sender = new GMailSender("[email protected]","password");
            sender.sendMail("This is Subject", "This is Body", "[email protected]",   
            "[email protected]");  
       } catch (Exception e) {   
            Log.e("send", "error");  
       } 
  }

GMailSender.java：

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 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");   
        }   
    }   
}  

JSSEProvider.java：

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;
            }
        });
    }
}

jar文件：https://code.google.com/p/javamail-android/downloads/list

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

Answer 1

替换Transport.send（message）;与下面的代码应该工作

   Transport transport = session.getTransport("smtp");
    transport.connect("smtp.gmail.com", 587, _user, _pass);
    transport.sendMessage(msg, msg.getAllRecipients());

Answer 2

嘿，您的代码是完美的，因为我已经使用了此代码，因此您需要为网络错误例外添加一个线程策略，并在您的onCreate（）方法的两行下面添加以下代码

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
            .permitAll().build();
    StrictMode.setThreadPolicy(policy);

Answer 3

问题是我所在的校园的wifi网络阻止了电子邮件的发送。当我使用3G时，它已经起作用了。

Answer 4

如果您在sendEmail（）的catch块中放置一条日志消息，您将基于此原因对代码进行更改，您将了解问题所在

另外，我面临的问题是，我在主线程中调用了发送邮件的方法，您可以创建一个单独的线程来调用邮件操作，它会像一个魅力一样工作。