正文消息上的 Android GmailSender 错误

Question

当您尝试使用 GmailSender 类发送电子邮件时，收到的电子邮件没有正文，并且检查了参数，发现所有参数都只填充了文本。

我的方法

private static Boolean SendMail(ArrayList<Contato> colecao, String localFile, String subject, String body)
{
    Boolean ret = false;

    final GMailSender sender = new GMailSender("mymail@emailprov.net.br", "mypass");

    try
    {
        (colecao.size() < 1) return false;
        else
        {
            String recipients = GetRecipients(colecao);

            if(localFile != "")
                sender.addAttachment(localFile,"");//Anexo

            sender.sendMail(subject, body, "mymail@emailprov.net.br", recipients);
            Log.d("EMAIL SENDER", "email Enviado com sucesso");
            ret = true;
        }
    }
    catch (Exception e)
    {
        ret = false;
        Log.e("SendMail", e.getMessage(), e);
    }

    return ret;
}

GmailSender 类

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; 

static {   
    Security.addProvider(new com.prologica.smart_detection.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);   

    _multipart = new MimeMultipart(); 
}   

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);

    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,String subject) throws Exception { 
    BodyPart messageBodyPart = new MimeBodyPart(); 
    DataSource source = new FileDataSource(filename); 
    messageBodyPart.setDataHandler(new DataHandler(source)); 
    messageBodyPart.setFileName(filename); 
    _multipart.addBodyPart(messageBodyPart);

    BodyPart messageBodyPart2 = new MimeBodyPart(); 
    messageBodyPart2.setText(subject); 

    _multipart.addBodyPart(messageBodyPart2); 
} 

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");   
    }   
}   

}

空正文邮件结果

我该如何解决这个问题？我需要发送一些简单的内容，例如只有几个字符的“任何文本”。

Answer 1

修改GmailSender类的sendMail函数如下:

message.setDataHandler(handler);

- message.setContent(_multipart);
+ if(_multipart.getCount() > 0) {
+    BodyPart messageBodyPart = new MimeBodyPart();
+    messageBodyPart.setText(body);
+    _multipart.addBodyPart(messageBodyPart);
+    message.setContent(_multipart);
+}

if (recipients.indexOf(',') > 0)