コードが添付ファイル付きのメールを送信しない

Question

Androidに添付ファイルがあるメールを送信しようとしています。メッセージのみを送信している場合はメールに送られますが、添付ファイルを送信したい場合はメールには表示されません。

理由は何ですか？

もしあなたが私のすべてのコードを送ってもいいかもしれません。

public class SendMail extends AsyncTask<Void,Void,Void> { 

    //Declaring Variables 
    private Context context; 
    private Session session; 

    //Information to send email 
    private String email; 
    private String subject; 
    private String message; 
    private String filePath; 

    //Progressdialog to show while sending email 
    private ProgressDialog progressDialog; 

    //Class Constructor 
    public SendMail(Context context, String email, String subject, String message, String filePath){ 
     //Initializing variables 
     this.context = context; 
     this.email = email; 
     this.subject = subject; 
     this.message = message; 
     this.filePath = filePath; 
    } 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     //Showing progress dialog while sending email 
     progressDialog = ProgressDialog.show(context,"Saadan KT","See võib aega võtta",false,false); 
    } 

    @Override 
    protected void onPostExecute(Void aVoid) { 
     super.onPostExecute(aVoid); 
     //Dismissing the progress dialog 
     progressDialog.dismiss(); 
     //Showing a success message 
     Toast.makeText(context,"Korras;)",Toast.LENGTH_LONG).show(); 
    } 

    @Override 
    protected Void doInBackground(Void... params) { 
     //Creating properties 
     Properties props = new Properties(); 

     //Configuring properties for gmail 
     //If you are not using gmail you may need to change the values 
     props.put("mail.smtp.host", "smtp.gmail.com"); 
     props.put("mail.smtp.socketFactory.port", "465"); 
     props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
     props.put("mail.smtp.auth", "true"); 
     props.put("mail.smtp.port", "465"); 

     //Creating a new session 
     session = Session.getDefaultInstance(props, 
       new javax.mail.Authenticator() { 
        //Authenticating the password 
        protected PasswordAuthentication getPasswordAuthentication() { 
         return new PasswordAuthentication(Config.EMAIL, Config.PASSWORD); 
        } 
       }); 

     try { 
      //Creating MimeMessage object 
      MimeMessage mm = new MimeMessage(session); 

      //Setting sender address 
      mm.setFrom(new InternetAddress(Config.EMAIL)); 
      //Adding receiver 
      mm.addRecipient(Message.RecipientType.TO, new InternetAddress(email)); 
      //Adding subject 
      mm.setSubject(subject); 
      //Adding message 
      //mm.setText(message); 

      MimeMultipart multipart = new MimeMultipart("related"); 
      BodyPart messageBodyPart = new MimeBodyPart(); 
      messageBodyPart.setText(message); 
      multipart.addBodyPart(messageBodyPart); 
      MimeBodyPart messageBodyPart2 = new MimeBodyPart(); 
      DataSource fds = new FileDataSource(filePath); 
      messageBodyPart.setDataHandler(new DataHandler(fds)); 

      // add image to the multipart 
      multipart.addBodyPart(messageBodyPart2); 

      // put everything together 
      mm.setContent(multipart); 



      //Sending email 
      Transport.send(mm); 

     } catch (MessagingException e) { 
      e.printStackTrace(); 
     } 
     return null; 
    } 
} 

Answer 1

添付ファイルのコードが表示されません。 これはあなたを助けるかもしれません。見てみましょう。

まず、multipart/mixed部分のハンドラを追加します。

// There is something wrong with MailCap, javamail can not find a 
// handler for 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); 

今取付部を追加します。、

BodyPart messageBodyPart = new MimeBodyPart(); 
messageBodyPart.setText(message); 
multipart = new MimeMultipart(); 
multipart.addBodyPart(messageBodyPart); 

//setup attachments 
ArrayList<String> attachmentsPath = new ArrayList<String>(); 

//setup attachments 
File file = new File(filepath); 
MimeBodyPart attachBodyPart = new MimeBodyPart(); 
DataSource source = new FileDataSource(file.getAbsolutePath()); 
attachBodyPart.setDataHandler(new DataHandler(source)); 
String name = file.getName(); 
Log.d(LOG_TAG, "attaching file " + name); 
attachBodyPart.setFileName(name); 
multipart.addBodyPart(attachBodyPart); 
attachmentsPath.add(file.getAbsolutePath()); 

// Put parts in message 
mm.setContent(multipart); 

//Sending email 
Transport.send(mm);