发送HTML电子邮件用JavaMail API为Android

Question

我使用的被移植为Android了JavaMail API发现here但我无法弄清楚如何发送HTML格式的电子邮件吧。

的活动来设置电子邮件：

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; 


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.setContent(_body, "text/html"); 
    _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; 
} 

public void setTo(String[] _to) { 
this._to = _to; 

} 

public void setFrom(String _from) { 
this._from = _from; 

} 

public void setSubject(String _subject) { 
this._subject = _subject; 

} 

public void setBody(Spanned string) { 
this._body=string.toString(); 

} 
} 

活动试图发送电子邮件：

Mail m = new Mail("email address", "password"); 

String[] toArr = {Email1, Email2}; 
m.setTo(toArr); 
m.setSubject("This is just a test"); 

String sb=("Android</br>Testing</br><b> test </b>"); 


m.setBody(Html.fromHtml(sb)); 

try { 
    m.addAttachment("/sdcard/+"Image1.PNG"); 

    if(m.send()) { 
    Toast.makeText(this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
    } else { 
    Toast.makeText(this, "Email was not sent.", Toast.LENGTH_LONG).show(); 
    } 
} catch(Exception e) { 
    //Toast.makeText(MailApp.this, "There was a problem sending the email.",  Toast.LENGTH_LONG).show(); 
    Log.e("MailApp", "Could not send email", e); 
} 
    } 

Answer 1

可以使用GMAILSender类。看看this link

而不是使用文本/平原，尝试使用text/html的在GmailSender.java

Answer 2

在你的代码，而不是使用 “text/html的” 只能用“text/html的;字符集= ISO-8859-1" 。它应该工作。消息的字符串必须已经有html标签。例如...

BodyPart messageBodyPart = new MimeBodyPart(); 
messageBodyPart.setContent("my message in html <br /> <strong> text in bold </strong>", "text/html; charset=ISO-8859-1"); 

multipart.addBodyPart(messageBodyPart); 

Answer 3

对于这个特定的例子，我做了如下rodrigoa指出。如果您遵循this tutorial，请执行以下操作。一旦你得到一个成功的HTML页面，你可以随意更改它。

sMail.setFrom("wooo@wooo.com"); 
sMail.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device."); 

/* Notice the html tags below. You could use StringBuilder to send a Google Map 
* of whatever other HTML content you want here. */ 
sMail.setBody("<HTML><CENTER><H1>IT WORKS</H1><C/ENTER></HTML>"); 

然后在您的主要活动，将其更改为以下：

// setup message body 
BodyPart messageBodyPart = new MimeBodyPart(); 
messageBodyPart.setContent(_body, "text/html; charset=ISO-8859-1"); 
_multipart.addBodyPart(messageBodyPart); 

希望这样可以节省别人一些时间。