ฉันได้รับConnectException: Connection timed outความถี่บางส่วนจากรหัสของฉัน URL ที่ฉันพยายามจะกดขึ้น รหัสเดียวกันใช้ได้กับผู้ใช้บางคน แต่ใช้ไม่ได้ ดูเหมือนว่าเมื่อผู้ใช้รายหนึ่งเริ่มได้รับข้อยกเว้นนี้พวกเขายังคงได้รับข้อยกเว้น
นี่คือการติดตามสแต็ก:
java.net.ConnectException: Connection timed out
Caused by: java.net.ConnectException: Connection timed out
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.Socket.connect(Socket.java:516)
at java.net.Socket.connect(Socket.java:466)
at sun.net.NetworkClient.doConnect(NetworkClient.java:157)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:365)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:477)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:214)
at sun.net.www.http.HttpClient.New(HttpClient.java:287)
at sun.net.www.http.HttpClient.New(HttpClient.java:299)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:796)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:748)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:673)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:840)
นี่คือตัวอย่างจากรหัสของฉัน:
URLConnection urlConnection = null;
OutputStream outputStream = null;
OutputStreamWriter outputStreamWriter = null;
InputStream inputStream = null;
try {
URL url = new URL(urlBase);
urlConnection = url.openConnection();
urlConnection.setDoOutput(true);
outputStream = urlConnection.getOutputStream(); // exception occurs on this line
outputStreamWriter = new OutputStreamWriter(outputStream);
outputStreamWriter.write(urlString);
outputStreamWriter.flush();
inputStream = urlConnection.getInputStream();
String response = IOUtils.toString(inputStream);
return processResponse(urlString, urlBase, response);
} catch (IOException e) {
throw new Exception("Error querying url: " + urlString, e);
} finally {
IoUtil.close(inputStream);
IoUtil.close(outputStreamWriter);
IoUtil.close(outputStream);
}