为什么JavaMail连接超时时间过长
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Why JavaMail connection timeout is too long
提问by kuba44
In my application I connect to server to authenticate users. This is code:
在我的应用程序中，我连接到服务器以对用户进行身份验证。这是代码：
try {
Properties prop = new Properties();
prop.put("mail.smtp.starttls.enable","true");
prop.put("mail.smtp.auth", "true");
prop.put("mail.smtp.connectiontimeout", 1000);
Session session = Session.getInstance(prop, null);
Transport transport = session.getTransport("smtp");
transport.connect("mion.elka.pw.edu.pl", 587, registerLog, registerPass);
transport.close();
return true;
} catch (NoSuchProviderException ex) {
Logger.getLogger(RegisterController.class.getName()).log(Level.SEVERE, null, ex);
return false;
} catch(AuthenticationFailedException ex) {
Logger.getLogger(RegisterController.class.getName()).log(Level.SEVERE, null, ex);
return false;
} catch (MessagingException ex) {
Logger.getLogger(RegisterController.class.getName()).log(Level.SEVERE, null, ex);
return false;
}
I set connection timeout to 1000 ms = 1s but it's ignore. When i debug and set wrong username and password i catch
我将连接超时设置为 1000 ms = 1s，但它被忽略了。当我调试并设置错误的用户名和密码时，我发现
javax.mail.MessagingException: java.net.SocketTimeoutException: Read timed out
not after 1000 ms, but after 5000*60 ms = 5 min
不是在 1000 毫秒之后，而是在 5000*60 毫秒 = 5 分钟之后
What is wrong ? How can i reduce timeoute ?
怎么了 ？我怎样才能减少超时时间？
采纳答案by kuba44
I resolve my problem by changing to the newest version of JavaMail (to JavaMail 1.5). I write about it there: http://openejb.979440.n4.nabble.com/Which-version-of-JavaMail-td4665285.html
我通过更改为最新版本的 JavaMail（到 JavaMail 1.5）解决了我的问题。我在那里写过：http: //openejb.979440.n4.nabble.com/Which-version-of-JavaMail-td4665285.html
thank's everybody for help, specially to Bill Shannon :)
感谢大家的帮助，特别是 Bill Shannon :)
回答by Shamim Ahmmed
Can you setup the Socket I/O timeout as well. When it is connected but failed to read data from the server then it will continue to wait.
您也可以设置 Socket I/O 超时。当它已连接但未能从服务器读取数据时，它将继续等待。
prop.put("mail.smtp.timeout", 1000);
Read timeoutindicates you are connected but not able to read data from the server.
读取超时表示您已连接但无法从服务器读取数据。
回答by robbyone
No, it is just because value must be a string "1000" and not an integer 1000
不，只是因为 value 必须是字符串“1000”而不是整数 1000
回答by Bar?? ?zdemir
I had the same problem. It worked with the String instead of integer.
我有同样的问题。它使用字符串而不是整数。
prop.put("mail.smtp.timeout", "1000");
prop.put("mail.smtp.connectiontimeout", "1000");
回答by J. Snow
Since you're using SSL, you can try to configure smtpsnamespace, not smtp:
由于您使用的是 SSL，您可以尝试配置smtps命名空间，而不是smtp：
prop.put("mail.smtps.timeout", 1000);
prop.put("mail.smtps.connectiontimeout", 1000);
BTW: Timeout values in the properties can be passed as int, as well as String. JavaMail will handle them both properly (at least v1.5+).
顺便说一句：属性中的超时值可以作为int，以及String. JavaMail 将正确处理它们（至少 v1.5+）。
