此方法给出了收件箱中的电子邮件数量。但它给了我这个异常(exception):
javax.mail.MessagingException: Connect failed;
nested exception is:
java.net.ConnectException: Connection timed out: connecterror
-
Session session = Session.getInstance(new Properties());
try {
Store store = session.getStore("pop3");
store.connect("pop.gmail.com" , "username" , "password");
Folder fldr = store.getFolder("INBOX");
fldr.open(Folder.READ_WRITE);
int count = fldr.getMessageCount();
System.out.println(count);
} catch(Exception exc) {
System.out.println(exc + "error");
}
最佳答案
试试这个:
Properties props = new Properties();
props.put("mail.pop3.host" , "pop.gmail.com");
props.put("mail.pop3.user" , "username");
// Start SSL connection
props.put("mail.pop3.socketFactory" , 995 );
props.put("mail.pop3.socketFactory.class" , "javax.net.ssl.SSLSocketFactory" );
props.put("mail.pop3.port" , 995);
Session session = Session.getDefaultInstance(props , new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication( "username" , "password");
}
});
try {
Store store = session.getStore("pop3");
store.connect("pop.gmail.com" , "username" , "password");
Folder fldr = store.getFolder("INBOX");
fldr.open(Folder.HOLDS_MESSAGES);
int count = fldr.getMessageCount();
System.out.println(count);
} catch(Exception exc) {
System.out.println(exc + " error");
}
另请访问 this question
关于java - 为什么我会得到这个异常(exception)？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6802208/