public class HttpUtile {
/**
* 請求資料GET請求
*/
public static String requestHttpGet(String strUrl) {

    try { //設定url
        URL url = new URL(strUrl);

        //獲取HttpURLConnection
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        //設定為get請求
        connection.setRequestMethod("GET");
        //設定連線主機超時時間
        connection.setConnectTimeout(5000);
        //設定從主機讀取資料超時
        connection.setReadTimeout(5000);
        //獲取請求碼（來判斷網路請求是否正確）
        int code = connection.getResponseCode();

        //判斷請求是否成功
        if (code == HttpURLConnection.HTTP_OK) {
            //如果資料請求成功
            //就獲取資料
            InputStream stream = connection.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(stream, "utf-8"));
            //拼接字串
            StringBuilder builder = new StringBuilder();
            //把資料讀取從成字串
            String str = "";
            while ((str = reader.readLine()) != null) {
                //把一行行資料拼接成一行資料
                builder.append(str);
            }
            //返回拼接後的資料
            return builder.toString();

        }
        //關閉連線
        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
 

}