Question

我需要在我的应用程序中向用户发送验证电子邮件，并且在该邮件中我想发送一个URL作为超链接，我能够成功发送电子邮件，但我没有得到如何在正文中发送超链接。

我向用户发送电子邮件的代码： -

public class Mail extends javax.mail.Authenticator {
    private String _user;
    private String _pass;

    private String[] _to;
    private String _from;

    private String _port;
    private String _sport;

    private String _host;

    private String _subject;
    private String _body;

    private boolean _auth;

    private boolean _debuggable;

    private Multipart _multipart;



    static {
        Security.addProvider(new JSSEProvider());
    }




    public Mail() {
        _host = "smtp.gmail.com"; // default smtp server
        _port = "465"; // default smtp port
        _sport = "465"; // default socketfactory port

        _user = ""; // username
        _pass = ""; // password
        _from = ""; // email sent from
        _subject = ""; // email subject
        _body = ""; // email body

        _debuggable = false; // debug mode on or off - default off
        _auth = true; // smtp authentication - default on

        _multipart = new MimeMultipart();

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

    public Mail(String user, String pass) {
        this();

        _user = user;
        _pass = pass;
    }

    public boolean send() throws Exception {
        Properties props = _setProperties();

        if(!_user.equals("") && !_pass.equals("") && _to.length > 0 && !_from.equals("") && !_subject.equals("") && !_body.equals("")) {
            Session session = Session.getInstance(props, this);

            MimeMessage msg = new MimeMessage(session);

            msg.setFrom(new InternetAddress(_from));

            InternetAddress[] addressTo = new InternetAddress[_to.length];
            for (int i = 0; i < _to.length; i++) {
                addressTo[i] = new InternetAddress(_to[i]);
            }
            msg.setRecipients(MimeMessage.RecipientType.TO, addressTo);

            msg.setSubject(_subject);
            msg.setSentDate(new Date());

            // setup message body
            BodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText(_body);
            _multipart.addBodyPart(messageBodyPart);

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

            // send email
            Transport.send(msg);

            return true;
        } else {
            return false;
        }
    }

    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);
    }

    @Override
    public PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(_user, _pass);
    }

    private Properties _setProperties() {
        Properties props = new Properties();

        props.put("mail.smtp.host", _host);

        if(_debuggable) {
            props.put("mail.debug", "true");
        }

        if(_auth) {
            props.put("mail.smtp.auth", "true");
        }

        props.put("mail.smtp.port", _port);
        props.put("mail.smtp.socketFactory.port", _sport);
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");

        return props;
    }

    // the getters and setters
    public String getBody() {
        return _body;
    }

    public void setBody(String _body) {
        this._body = _body;
    }

    public void setTo(String[] toArr) {
        // TODO Auto-generated method stub
        this._to=toArr;
    }

    public void setFrom(String string) {
        // TODO Auto-generated method stub
        this._from=string;
    }

    public void setSubject(String string) {
        // TODO Auto-generated method stub
        this._subject=string;
    }

    // more of the getters and setters …..
}

这是我的Mail.class： -

INTERNET_MAX_URL_LENGTH

请指导我如何在后台发送的电子邮件的邮件正文中发送文本和超链接。

Answer 1

确保您使用官方JavaMail for Android。

然后，修复这些common JavaMail mistakes。

要发送可点击的链接，请发送HTML电子邮件。使用包含消息中所需html内容的字符串设置_body。将设置邮件正文的代码更改为：

        MimeBodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setText(_body, "utf-8", "html");

Answer 2

我也遇到了设置正文的问题当我使用mailapi发送电子邮件时。我能够在程序中的邮件中添加附件。

我确实无法设置身体。这是对我有效的方法，我也使用了setText()方法。（我没有尝试过，但我认为也可以 javax.activation.DataHandler，然后getOutputStream() 一个人的程序可以通过写上正确的身体信息那。

if (fileBody!=null) {
  javax.mail.internet.MimeBodyPart bopart = new javax.mail.internet.MimeBodyPart();
// accumulate the text of the file into a String AND put it as the content
// of this message
  FileReader FI;
  FI = new FileReader(fileBody);
  BufferedReader BR = new BufferedReader (FI);
  StringBuffer B;
  B = new StringBuffer();
  String L;
  L = BR.readLine();

  while(L !=null){ 
    B.append(L);
    L = BR.readLine();
  }
  
  bopart.setText(B.toString());
  bopart.setDisposition(Part.INLINE);
  Debug.P("did setText on body |"+bopart+"|");
  parts.addBodyPart(bopart);
}

如何在我的应用程序中使用javamail API在邮件正文中发送超链接？

2 个答案: