public static String SendGET(String url,String param){
   String result="";//訪問返回結果
   BufferedReader read=null;//讀取訪問結果
    
   try {
    //建立url
    URL realurl=new URL(url+"?"+param);
    //開啟連線
    URLConnection connection=realurl.openConnection();
     // 設定通用的請求屬性
             connection.setRequestProperty("accept", "*/*");
             connection.setRequestProperty("connection", "Keep-Alive");
             connection.setRequestProperty("user-agent",
                     "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
             //建立連線
             connection.connect();
          // 獲取所有響應頭欄位
             Map<String, List<String>> map = connection.getHeaderFields();
             // 遍歷所有的響應頭欄位，獲取到cookies等
             for (String key : map.keySet()) {
                 System.out.println(key + "--->" + map.get(key));
             }
             // 定義 BufferedReader輸入流來讀取URL的響應
             read = new BufferedReader(new InputStreamReader(
                     connection.getInputStream(),"UTF-8"));
             String line;//迴圈讀取
             while ((line = read.readLine()) != null) {
                 result += line;
             }
   } catch (IOException e) {
    e.printStackTrace();
   }finally{
    if(read!=null){//關閉流
     try {
      read.close();
     } catch (IOException e) {
      e.printStackTrace();
     }
    }
   }
     
   return result; 
 }