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我正在嘗試使用Java發送電子郵件。從閱讀中，我發現，如果我使用Gmail作爲主機，我可以免費做這個&它應該工作，這是正確的。發送電子郵件：連接到主機時出現問題
所以，我有我下面的代碼，&我試圖從自己發送一封電子郵件給我的朋友的電子郵件（在我下面的代碼已經被改變了隱私的電子郵件），但我得到的時候我去送拋出的異常/傳送電子郵件（在該行Transport.send（MSG））
引發的輸出/異常是：
javax.mail.MessagingException的：無法連接到SMTP主機：smtp.gmail。 com，port：25; 嵌套的例外是： java.net.ConnectException：連接超時：連接 本應成功：假
你覺得我做錯了嗎？
/**
* SimpleAuthenticator is used to do simple authentication
* when the SMTP server requires it.
*/
class SMTPAuthenticator extends javax.mail.Authenticator
{
public PasswordAuthentication getPasswordAuthentication()
{
String username = "[email protected]";
String password = "xxxxxxx";
return new PasswordAuthentication(username, password);
}
}
public class SendEmail
{
public SendEmail()
{
}
public static boolean sendEmail(String from, String to[], String subject, String body)
{
try
{
boolean debug = false;
// Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com"); // "smtp.jcom.net");
props.put("mail.smtp.auth", "true");
// create some properties and get the default Session
// Session session = Session.getDefaultInstance(props, null);
Authenticator auth = new SMTPAuthenticator();
Session session = Session.getDefaultInstance(props, auth);
session.setDebug(debug);
// create a message
Message msg = new MimeMessage(session);
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
InternetAddress[] addressTo = new InternetAddress[to.length];
for (int i = 0; i < to.length; i++)
{
addressTo[i] = new InternetAddress(to[i]);
}
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Optional : You can also set your custom headers in the Email if
// you Want
msg.addHeader("MyHeaderName", "myHeaderValue");
// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(body, "text/plain");
System.out.println("1");
Transport.send(msg);
System.out.println("2");
}
catch (Exception e)
{
System.out.println(e);
return false;
}
return true;
}
public static void main(String args[])
{
boolean res = SendEmail.sendEmail("[email protected]", new String[] {"[email protected]", "[email protected]"},
"Test", "Did it work?");
System.out.println("Should have succeeded: " + res);
}
}