我一直在尝试从Gmail帐户接收邮件。但我不能这样做。我阅读了Stack Overflow中的所有问题并尝试了所有答案,但它没有用。
根据网站;在Gmail中接收邮件已经没有办法了。
我的第一个问题是;用于从Gmail帐户接收邮件的Java代码太多。使用这些代码,我可以在控制台上看到我的邮件内容。为什么我们无法在Android应用程序中接收邮件?或者如果我们可以在Android应用程序中接收邮件。我们怎么做到这一点?
我的第二个问题是:如果我无法从Gmail帐户接收邮件,我可以从Hotmail帐户或其他邮件帐户接收邮件吗?
答案 0 :(得分:0)
尝试这一个代码
Mail m = new Mail(your email_id), your id password ));
String[] toArr = { send email id };
m.setTo(toArr);
m.setFrom(your email_id);
m.setSubject("Out of subject");
m.setBody("Out Of msg ");
try {
m.send();
// Log.v("TAg", "send Mail");
} catch (Exception e) {
// Log.e("MailApp", "Could not send email", e);
}
mail.java
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;
}
/** method will be check email validation **/
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;
}
}
/** This method(addAttachment) will allow attach the file in mail **/
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);
}
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;
}
// more of the getters and setters …..
}
并添加到
mail.jar
activation.jar
答案 1 :(得分:0)
您没有说您是否在JavaMail FAQ上找到了代码。互联网上有很多旧的和坏的代码,但常见问题解答中的代码已知有效。尽管如此,听起来你已经有了在控制台上运行的代码,所以这可能是Android特有的问题。由于Android不是Java,因此总是很难知道可能出现的问题。 JavaMail FAQ还有调试提示,以防您没有找到它们。特别是,协议跟踪可能会提供其他人帮助您调试问题所需的信息。
答案 2 :(得分:0)
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
Properties pr = new Properties();
pr.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);
pr.setProperty("mail.pop3.socketFactory.fallback", "false");
pr.setProperty("mail.pop3.port", "995");
pr.setProperty("mail.pop3.socketFactory.port", "995");
pr.put("mail.pop3.host", "pop.gmail.com");
pr.setProperty("mail.store.protocol", "pop3");
try {
Session session = Session.getDefaultInstance(pr, null);
Store store = session.getStore();
store.connect("username", "password");
if(store.isConnected()==true)
{
System.out.println("Connection is OK");
}
// Folder inbox = store.getFolder("INBOX");
Folder inbox = store.getDefaultFolder().getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
Message messages[] = inbox.getMessages();
for(Message message:messages)
{
// System.out.println(message.getSentDate());
message.writeTo(System.out);
}
使用此代码,我只能转到“store.connect”行。在这一行,应用程序意外停止。所以,我甚至无法连接。 在Eclipse上使用mail.jar,Android Project
答案 3 :(得分:0)
我在阅读一些gmail消息时遇到了问题,所以我问了一个关于here的问题。问题中的代码可以为您提供一个很好的工作示例。
是的,您可以从任何支持pop3或imap访问的服务器上阅读邮件。 hotmail的示例,只需将主机更改为pop3.live.com
,将协议更改为pop3s
。
希望有所帮助!!
答案 4 :(得分:0)
http://blogs.wrox.com/files/2013/05/Chapter-8-9781118087299-2.pdf
您还将学习如何使用HTTP协议与Web服务器通信,以便下载文本和二进制数据。本章的最后一部分将向您展示如何解析XML文件以提取XML文件的相关部分 - 这种技术在您访问Web服务时非常有用。