如何使用附件发送自动电子邮件

Question

我使用this在我的应用中发送自动发送电子邮件。我试图将附件代码添加到我的应用程序但不工作！如何使用附件发送自动电子邮件？

GmailSender.java

package mypack;

公共类GMailSender扩展了javax.mail.Authenticator {

private String   mailhost = "smtp.gmail.com";
private String   user;
private String   password;
private Session  session;
public Multipart _multipart;

static {
    Security.addProvider(new hossin.asaadi.mailSender.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);

}


@Override
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));

        //   BodyPart messageBodyPart = new MimeBodyPart();
        //            _multipart.addBodyPart(messageBodyPart);

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

        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;
    }


    @Override
    public String getContentType() {
        if (type == null)
            return "application/octet-stream";
        else
            return type;
    }


    @Override
    public InputStream getInputStream() throws IOException {
        return new ByteArrayInputStream(data);
    }


    @Override
    public String getName() {
        return "ByteArrayDataSource";
    }


    @Override
    public OutputStream getOutputStream() throws IOException {
        throw new IOException("Not Supported");
    }
}


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);
}}

JSSEProvider.java

public final class JSSEProvider扩展Provider {

public JSSEProvider() {
    super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
    AccessController.doPrivileged(new java.security.PrivilegedAction<Void>() {

        @Override
        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;
        }
    });
}}

在我的活动中：

            btn3.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                try {

                    GMailSender sender = new GMailSender("Mysenderemail", "pass");
                    sender.sendMail("title",
                            "This is Body",
                            "user@gmail.com",
                            "user@gmail.com");
                    sender.addAttachment("/sdcard/image.jpg");

                    Toast.makeText(getApplicationContext(), "2 sucess", 0).show();

                }
                catch (Exception e) {
                    Log.e("SendMail", e.getMessage(), e);
                }
            }
        });