java后台实现支付宝对账功能的示例代码

 /**
 * 实现支付宝对账
 * @param request 
 * @return response
 */
 @Override
 public void alipayBill() {
 logger.info("==================向支付宝发起对账请求");
 // 获取支付宝支付的配置信息
 ValueOperations<String, Object> valueOps = redisTemplate.opsForValue();
 Payment alipayment = (Payment) valueOps.get("alipayment");
 if (alipayment == null) {
  alipayment = alipayMentOrderRepository.getPayment(1, 1);
 }

 try {
 //实例化客户端（参数：网关地址、商户appid、商户私钥、格式、编码、支付宝公钥、加密类型）
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.URL, alipayment.getAppid(), 
     AlipayConfig.RSA_PRIVATE_KEY, AlipayConfig.FORMAT, AlipayConfig.CHARSET, 
     AlipayConfig.ALIPAY_PUBLIC_KEY,AlipayConfig.SIGNTYPE);
 AlipayDataDataserviceBillDownloadurlQueryRequest request = new AlipayDataDataserviceBillDownloadurlQueryRequest();//创建API对应的request类
 request.setBizContent("{" +
 "\"bill_type\":\"trade\"," +
 "\"bill_date\":\"2018-03-14\"}"); //设置业务参数
 AlipayDataDataserviceBillDownloadurlQueryResponse response = alipayClient.execute(request);
 String billDownloadUrl=response.getBillDownloadUrl();
 logger.info("==================支付宝返回文件下载地址："+billDownloadUrl);
 this.downBill(billDownloadUrl); //调用下载文件方法

 } catch (AlipayApiException e) {

  // TODO Auto-generated catch block
  e.printStackTrace();
 }//通过alipayClient调用API，获得对应的response类
     //根据response中的结果继续业务逻辑处理
 }

 /**
 * 下载账单文件：
 * @param request 
 * @return response
 */
 public String downBill(String billDownloadUrl){
 long filename=new Date().getTime();
 //指定希望保存的文件路径
 String filePath = "G:/alipay/billfile/fund_bill_"+filename+".zip";
 URL url = null;
 HttpURLConnection httpUrlConnection = null;
 InputStream fis = null;
 FileOutputStream fos = null;
 try {
   url = new URL(billDownloadUrl);
   httpUrlConnection = (HttpURLConnection) url.openConnection();
   httpUrlConnection.setConnectTimeout(5 * 1000);
   httpUrlConnection.setDoInput(true);
   httpUrlConnection.setDoOutput(true);
   httpUrlConnection.setUseCaches(false);
   httpUrlConnection.setRequestMethod("GET");
   httpUrlConnection.setRequestProperty("Charsert", "UTF-8");
   httpUrlConnection.connect();
   fis = httpUrlConnection.getInputStream();
   byte[] temp = new byte[1024];
   int b;
   fos = new FileOutputStream(new File(filePath));
   while ((b = fis.read(temp)) != -1) {
     fos.write(temp, 0, b);
     fos.flush();
   }
 } catch (MalformedURLException e) {
   e.printStackTrace();
 } catch (IOException e) {
   e.printStackTrace();
 } finally {
   try {
     if(fis!=null) fis.close();
     if(fos!=null) fos.close();
     if(httpUrlConnection!=null) httpUrlConnection.disconnect();
   } catch (IOException e) {
     e.printStackTrace();
   }
 }
 return null;
 }