public class UrlVarificationTask extends AsyncTask<Void, Void, Integer> {
private String url;
private UrlVarificationDelegate delegate;
private HttpURLConnection huc;
public UrlVarificationTask(String url, UrlVarificationDelegate delegate) {
this.url = url;
this.delegate = delegate;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected Integer doInBackground(Void... params) {
int responseCode = 0;
try {
System.setProperty("http.keepAlive", "false");
URL u = new URL(url);
huc = (HttpURLConnection) u.openConnection();
huc.setRequestMethod("HEAD");
huc.connect();
responseCode = huc.getResponseCode();
} catch (MalformedURLException mal) {
responseCode = -555;
} catch (IOException io) {
responseCode = -444;
} catch (Exception ex) {
responseCode = -333;
ex.printStackTrace();
}
if (huc != null) {
try {
huc.getInputStream().close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
huc.disconnect();
}
Logger.debug("Response Code==" + responseCode);
return responseCode;
}
@Override
protected void onPostExecute(Integer responseCode) {
delegate.urlVarificationResponseCode(responseCode);
super.onPostExecute(responseCode);
}
}
我使用上面的dode来验证url,
如果 HEAD 给我响应代码 200,那么只有我打开一个指向 webview 的 URL。
但是一旦我称之为保持连接并且即使在关闭后也不允许任何其他 http 请求,该怎么办?
安全使用 HttpURL Connection
huc.setRequestProperty("keep-alive", "false");
这是作为 HttpURLConnection 保持连接活动,因此我们无法发出进一步的请求,因此保持活动设置以错误地解决此问题。
要正确关闭HttpURLConnection
请转到链接
通过此 URL 被关闭。