/**     * 发送HTTP请求     *      * @param url     * @param propsMap     *            发送的参数     */    public static String httpSend(String url, Map
     
       propsMap) {        String responseMsg = "";        HttpClient httpClient = new HttpClient();        PostMethod postMethod = new PostMethod(url);// POST请求        // 参数设置        Set
      
        keySet = propsMap.keySet();        NameValuePair[] postData = new NameValuePair[keySet.size()];        int index = 0;        for (String key : keySet) {            postData[index++] = new NameValuePair(key, propsMap.get(key).toString());        }        postMethod.addParameters(postData);        try {            httpClient.executeMethod(postMethod);// 发送请求            // 读取内容            byte[] responseBody = postMethod.getResponseBody();            // 处理返回的内容            responseMsg = new String(responseBody);        } catch (HttpException e) {            e.printStackTrace();            Logger.getLogger(PaymentAction.class).error(e.getMessage());        } catch (IOException e) {            e.printStackTrace();            Logger.getLogger(PaymentAction.class).error(e.getMessage());        } finally {            postMethod.releaseConnection();// 关闭连接        }        return responseMsg;    }