对账单文件下载都可以用到 微信对账单 GZIP 文件返回 支付宝,银联 返回下载链接 放入下载都可以

对账单文件下载  GTE,POST都可以注意参数区分

注意微信下载是没有格式的文件注意文件改成txt格式或者直接用notepad++打开

   public static void main(String[] arg) {downloadFile(wxUrl, "D:/test/WX/****.gzip", reuqestXml, "POST");}/*** * @param urlPath 请求地址* @param saveUrl 保存文件地址* @param data 请求参数* @param status 请求类型 post get* @return* @throws IOException* @throws Exception*/public static void downloadFile(String urlPath, String saveUrl, String data,String status) {// 设置访问地址URL url = null;HttpURLConnection httpURLConnection = null;InputStream inputStream = null;FileOutputStream fos = null;try {url = new URL(urlPath);// http的连接类 得到网络访问对象httpURLConnection = (HttpURLConnection) url.openConnection();// 设置请求参数（访问方式,超时时间,输入,输出流,请求头信息），以流的形式进行连接// 设定请求的方法，默认是GEThttpURLConnection.setRequestMethod(status);// 超时时间httpURLConnection.setConnectTimeout(5000);// 设置是否向HttpURLConnection输出httpURLConnection.setDoOutput(true);// 设置是否从httpUrlConnection读入httpURLConnection.setDoInput(true);// 设置使用编码格式参数的名-值对httpURLConnection.setRequestProperty("Content-Type", "application/json;charset=utf-8");httpURLConnection.setRequestProperty("Charsert", "UTF-8");// 简历连接httpURLConnection.connect();if(data!=null&&data!=""){// 写入参数到请求中BufferedWriter writer = new BufferedWriter(new         OutputStreamWriter(httpURLConnection.getOutputStream(),"UTF-8"));// 传递参数writer.write(data.toString());writer.flush();writer.close();}// 获取响应code 200成功int code = httpURLConnection.getResponseCode();if (code == 200) {inputStream = httpURLConnection.getInputStream();// 判断字节大小if (inputStream.available() != 0) {System.out.println("结果大小:" + inputStream.available());File file = new File(saveUrl);if (!file.getParentFile().exists()) {boolean result = file.getParentFile().mkdirs();if (!result) {System.out.println("创建失败");}}byte[] temp = new byte[1024];int b;fos = new FileOutputStream(file);while ((b = inputStream.read(temp)) != -1) {fos.write(temp, 0, b);fos.flush();}}}// 关闭 http连接,释放资源httpURLConnection.disconnect();}catch (MalformedURLException e) {// TODO Auto-generated catch blocke.printStackTrace();}catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally {//最终都执行关流try {if (inputStream != null)inputStream.close();if (fos != null)fos.close();if (httpURLConnection != null)httpURLConnection.disconnect();}catch (IOException e) {e.printStackTrace();}}}

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