激活开发者模式的时候我用了第三方的网关，现在想改成自己的，需要改成自己的网关: www.betafenqi.com/gateway_alipay.aspx

确定修改的时候有个错误提示：应用网关响应异常。
支付宝上面的demo让我稍作修改，集成到我的ssh工程中了，因为是线上测试，所以不容易找出什么问题，知道的大神帮下忙呗。下面是我的代码（没贴出调用部分，和demo基本一致）：

• public String alipay() throws MyException{

   

  System.out.println("网关--支付宝test~");

  System.out.println("接受参数。。");

  HttpServletRequest request = ServletActionContext.getRequest();

  HttpServletResponse response = ServletActionContext.getResponse();

  Map<String,String> pars = RequestUtil.getRequestParams(request);

  System.out.println("参数。。"+pars.toString());

  if(!("{}".equals(pars.toString()))){

  url = "index.jsp";

  String service = pars.get("service");

  String bizContent = pars.get("biz_content");

  JSONObject bizContentJson = (JSONObject) new XMLSerializer().read(bizContent);

  System.out.println("bizContent:"+bizContent);

  Event event = gatewayServ.getEvent(service, bizContentJson);

  String responseMsg = event.execute();

   

  try {

  responseMsg = AlipaySignature.encryptAndSign(responseMsg,

          AlipayConfig.ALIPAY_PUBLIC_KEY,

          AlipayConfig.PRIVATE_KEY, AlipayConfig.CHARSET,

          false, true);

  } catch (AlipayApiException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

   

             

  try {

  //http 内容应答

              response.reset();

              response.setContentType("text/xml;charset=GBK");

              PrintWriter printWriter;

  printWriter = response.getWriter();

  printWriter.print(responseMsg);

              response.flushBuffer();

              System.out.println("response串："+response);

  } catch (IOException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

             

  //根据业务参数获取

   

  }else{

  System.out.println("参数为空");

  url = "test.jsp";

  }

  returnSUCCESS;

  }