使用Java访问url的简单操作

使用URL类访问url，传递参数，完成操作。

 String urlStr = "";
 URL url = new URL(urlStr);
 URLConnection URLconnection = url.openConnection();
 HttpURLConnection httpConnection = (HttpURLConnection)URLconnection;
 int responseCode = httpConnection.getResponseCode();
 if (responseCode == HttpURLConnection.HTTP_OK) {
 }else{
 }

取得该url的页面值（输出值）

 InputStream urlStream = httpConnection.getInputStream();
 BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlStream));
 String sCurrentLine = "";
 String sTotalString = "";
 while ((sCurrentLine = bufferedReader.readLine()) != null) {
     sTotalString += sCurrentLine;
 }
 //假设该url页面输出为"OK"
 if (sTotalString.equals("OK")) {
 } else {
 }