微信支付通知方法-附上部分代码

/**
	 * 支付通知相应处理
	 * @param request
	 * @param response
	 * @return
	 * @throws Exception
	 */
	@SuppressWarnings("unchecked")
	@ResponseBody
	@RequestMapping(value = "/paynotify", method = RequestMethod.POST)
	public String paynotify(HttpServletRequest request, HttpServletResponse response) throws Exception {
		String resXml = "fail";
		response.setCharacterEncoding("UTF-8");
		response.setContentType("text/xml");
		ServletInputStream in = request.getInputStream();
		String xmlMsg = Tools.inputStream2String(in);

		logger.info(xmlMsg);
		if (!TextUtils.isEmpty(xmlMsg)) {
			Map<String, String> map = WXPayUtil.xmlToMap(xmlMsg);
			String return_code = map.get("return_code");
			String return_msg = map.get("return_msg");

			if (return_code.equals("SUCCESS") && TextUtils.isEmpty(return_msg)) {
				return_msg = "OK";
			}
			map = new HashMap<String, String>();
			map.put("return_code", return_code);
			map.put("return_msg", return_msg);

			// 响应xml
			resXml = WXPayUtil.mapToXml(map);
			logger.info("resXml:" + resXml);

		}

		return resXml;

	}