即使状态已知,HttpURLConnection.getResponseCode()为什么也抛出IOException?我希望在没有异常的情况下可以选择获得状态代码(即使不是200),所以我可以在代码中决定要做什么。java.io.IOException: Server returned HTTP response code: 412 for URL: <my url>
at sun.net.www.protocol.http.HttpURLConnection.<e
我正在使用HttpUrlConnection进行网络呼叫。我使用urlconnection.disconnect()和inputstream.close()来关闭连接 HttpURLConnection uc = (HttpURLConnectionout = new BufferedOutputStream(uc.getOutputStream());
InputStream in = new BufferedInputStream(uc.getInputSt