java.net.UnknownHostException-Jsoup

Question

嘗試執行以下代碼時，我正在獲取java.net.UnknownHostException 。 我需要更改一些代理設置嗎？

doc = Jsoup.connect("http://example.com/").get();
String title = doc.title();
System.out.println(title);

錯誤跟蹤如下

java.net.UnknownHostException: example.com
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:512)
at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:493)
at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:205)
at org.jsoup.helper.HttpConnection.get(HttpConnection.java:194)
at Start.main(Start.java:28)

Answer 1

道歉！！！ 剛從VPN斷開，現在一切正常。

Answer 2

我遇到了同樣的問題，后來發現互聯網連接速度很慢