Androidの网络Http之判断是否连接服务器

public boolean isConnByHttp(){
boolean isConn = false;
URL url;
HttpURLConnection conn = null;
try {
url = new URL("ttp://wl.daishu001.com/YHDriver.asmx");
conn = (HttpURLConnection)url.openConnection();
conn.setConnectTimeout(1000*5);
if(conn.getResponseCode()==200){
isConn = true;
}

} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
conn.disconnect();
}
return isConn;
}