程序为什么会死在InputStreamReader语句上，求分析！！

[zenghui1234]

源码：
private String actionUrl = "http://192.168.0.103:8080/TestServlet/FuckmanServlet?param=fuckyouservlet";

..................


private void uploadFile()
{


try
{

url =new URL(actionUrl);

HttpURLConnection urlConn=(HttpURLConnection)url.openConnection();
dialogok(actionUrl);
InputStreamReader in= new InputStreamReader(urlConn.getInputStream());

BufferedReader bufferedReader= new BufferedReader(in);
String result="";
String readLine=null;

while((readLine=bufferedReader.readLine())!=null)
{
result+=readLine;
}
in.close();
urlConn.disconnect();

mAction.setText(result);
}
catch(Exception e)
{
e.printStackTrace();
}
}


经过alertdialog逐句测试，程序卡在InputStreamReader in= new InputStreamReader(urlConn.getInputStream());



求帮忙分析！