Question

这就是我想要的

我想制作一份反馈表。因此，我创建了一个示例活动，用于将电子邮件从邮件地址发送到另一个但我希望邮件不经身份验证就发送。或者如果无法将其从电子邮件地址更改为另一个电子邮件地址。有我的代码。

这是我的Mail.java类

    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 void setTo(String[] toArr){
     _to = toArr;
 }

 public void setFrom(String from){
     _from = from;
 }
 public void setSubject(String subject){
     _subject = subject;
 }

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;
    }
}



@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;
} }

这是我的发送电子邮件类

public class SendEmail extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Mail m = new Mail("<USER EMAIL>", "<PASSWORD>"); 
    String[] toArr = {"<EMAIL-1>", "<EMAIL-2>"}; 
    m.setTo(toArr); 
    m.setFrom("<EMAIL>"); 
    m.setSubject("This is aSubject."); 
    m.setBody("This is my Email body"); 
    try { 

      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) { 
      Log.e("MailApp", "Could not send email", e); 
    } 
}


       }

}

Answer 1

是否需要身份验证取决于您的邮件服务器。大多数邮件服务器都需要身份验证才能防止垃圾邮件。

Answer 2

大多数SMTP服务器只接受来自其自己网络（例如公司网络）的授权而接受电子邮件。当您需要使用第三方SMTP服务器时，需要授权。

无需用户身份验证即可发送

2 个答案: