/**

     * 通过HttpClient发送Post请求

     * @param path 请求路径

     * @param params 请求参数

     * @param encoding 编码

     * @return 请求是否成功

     */

    private static boolean sendHttpClientPOSTRequest(String path, Map<String, String> params, String encoding) throws Exception{

        List<NameValuePair> pairs = new ArrayList<NameValuePair>();//存放请求参数

        if(params!=null && !params.isEmpty()){

            for(Map.Entry<String, String> entry : params.entrySet()){

                pairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));

            }

        }

        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(pairs, encoding);

        HttpPost httpPost = new HttpPost(path);

        httpPost.setEntity(entity);

        DefaultHttpClient client = new DefaultHttpClient();

        HttpResponse response = client.execute(httpPost);

        if(response.getStatusLine().getStatusCode() == 200){

            return true;

        }

        return false;

    }

    /**

     * 发送Post请求

     * @param path 请求路径

     * @param params 请求参数

     * @param encoding 编码

     * @return 请求是否成功

     */

    private static boolean sendPOSTRequest(String path, Map<String, String> params, String encoding) throws Exception{

        //  title=liming&timelength=90

        StringBuilder data = new StringBuilder();

        if(params!=null && !params.isEmpty()){

            for(Map.Entry<String, String> entry : params.entrySet()){

                data.append(entry.getKey()).append("=");

                data.append(URLEncoder.encode(entry.getValue(), encoding));

                data.append("&");

            }

            data.deleteCharAt(data.length() - 1);

        }

        byte[] entity = data.toString().getBytes();//生成实体数据

        HttpURLConnection conn = (HttpURLConnection) new URL(path).openConnection();

        conn.setConnectTimeout(5000);

        conn.setRequestMethod("POST");

        conn.setDoOutput(true);//允许对外输出数据

        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        conn.setRequestProperty("Content-Length", String.valueOf(entity.length));

        OutputStream outStream = conn.getOutputStream();

        outStream.write(entity);

        if(conn.getResponseCode() == 200){

            return true;

        }

        return false;

    }

    /**

     * 发送GET请求

     * @param path 请求路径

     * @param params 请求参数

     * @param encoding 编码

     * @return 请求是否成功

     */

    private static boolean sendGETRequest(String path, Map<String, String> params, String ecoding) throws Exception{

        // http://192.168.1.100:8080/web/ManageServlet?title=xxx&timelength=90

        StringBuilder url = new StringBuilder(path);

        url.append("?");

        for(Map.Entry<String, String> entry : params.entrySet()){

            url.append(entry.getKey()).append("=");

            url.append(URLEncoder.encode(entry.getValue(), ecoding));

            url.append("&");

        }

        url.deleteCharAt(url.length() - 1);

        HttpURLConnection conn = (HttpURLConnection)new URL(url.toString()).openConnection();

        conn.setConnectTimeout(5000);

        conn.setRequestMethod("GET");

        if(conn.getResponseCode() == 200){

            return true;

        }

        return false;

    }