JAVA调用接口

public static String getDate(String rcwUrl){

  StringBuffer strBuf = new StringBuffer();
  try{ 
            URL url = new URL(rcwUrl);
            URLConnection conn = url.openConnection(); 
            BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(),"utf-8"));//转码。 
            String line = null; 
            while ((line = reader.readLine()) != null) 
                strBuf.append(line + " "); 
                reader.close(); 
        }catch(MalformedURLException e) { 
            e.printStackTrace();  
        }catch(IOException e){ 
            e.printStackTrace();  
        }
        return strBuf.toString();
 }