public static String sendService(String params) throws QingException{
		StringBuffer document = new StringBuffer();		
		try{
			URL url = new URL(params);
			URLConnection conn = url.openConnection();		    
			BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
			String line = null;  
			while ((line = reader.readLine()) != null)	
				document.append(line + " ");	 
			reader.close();
		}catch(MalformedURLException mue) {
			mue.printStackTrace();
			throw new QingException(mue.getMessage());
		}catch(IOException ioe){
			ioe.printStackTrace();
			throw new QingException(ioe.getMessage());
		}catch (Exception e) {
			e.printStackTrace();
			throw new QingException(e.getMessage());
		}
		return document.toString().trim();
	}