Call url.openConnection (). GetInputStream () Download Times java.io.IOException

 This post last edited by the ppmmwozuiai on 2013-09-12 16:36:07

error message the first two lines are:
java.io.IOException: Server returned HTTP response code: 401 for URL: http://localhost/jsp/downloadtmp/126806114/6.zip
at sun.net.www.protocol.http.HttpURLConnection.getInputStream (Unknown Source)

Code:

			try {
  				URL url = new URL(BASE_URL + requestNumber + "/" + fileName);
  				File outFile = new File(path + File.separator + fileName);
  				os = new FileOutputStream(outFile);
  				is = url.openConnection().getInputStream();
  				byte[] buff = new byte[1024];
  				while (true) {
  					int readed = is.read(buff);
  					System.out.println("--------------" + buff.length);
  					if (readed == -1) {
  						break;
  					}
  					byte[] temp = new byte[readed];
  					System.arraycopy(buff, 0, temp, 0, readed);
  					os.write(temp);
  				}
  
  			} catch (Exception e) {
  				e.printStackTrace();
  			} finally {
  				try {
  					is.close();
  					os.close();
  				} catch (IOException e) {
  					// TODO Auto-generated catch block
  					e.printStackTrace();
  				}
  			}

not understand why the fifth line of the error. .
------ Solution ---------------------------------------- ----
Server returned HTTP response code: 401
only know 401 404 do not know , ah
------ Solution ------------------------- -------------------
right. Should set the authentication /
------ For reference only --------------------------------- ------
I understand. Website authentication. Before the call must present a certified job.