微信公眾號支付java版本
阿新 • • 發佈：2019-01-05
@RequestMapping("/toPay") public String toPay(HttpServletRequest request, HttpServletResponse response, Model model){ System.out.println("toPay success"); try { String orderId = request.getParameter("orderId"); System.out.println("in toPay,orderId:" + orderId); String totalFeeStr = request.getParameter("totalFee"); Float totalFee = 0.0f; if(StringUtils.isNotBlank(totalFeeStr)){ totalFee = new Float(totalFeeStr); } //網頁授權後獲取傳遞的引數 //String userId = request.getParameter("userId"); String code = request.getParameter("code"); System.out.println("code:"+code); //System.out.println("userId:"+userId); //獲取統一下單需要的openid String openId =""; String URL = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + WxPayConfig.appid + "&secret=" + WxPayConfig.appsecret + "&code=" + code + "&grant_type=authorization_code"; System.out.println("URL:"+URL); JSONObject jsonObject = CommonUtil.httpsRequest(URL, "GET", null); if (null != jsonObject) { openId = jsonObject.getString("openid"); System.out.println("openId:" + openId); } //獲取openId後呼叫統一支付介面https://api.mch.weixin.qq.com/pay/unifiedorder //隨機數 //String nonce_str = "1add1a30ac87aa2db72f57a2375d8fec"; String nonce_str = UUID.randomUUID().toString().replaceAll("-", ""); //商品描述 String body = orderId; //商戶訂單號 String out_trade_no = orderId; //訂單生成的機器 IP String spbill_create_ip = request.getRemoteAddr(); //總金額 //TODO Integer total_fee = Math.round(totalFee*100); //Integer total_fee = 1; //商戶號 //String mch_id = partner; //子商戶號 非必輸 //String sub_mch_id=""; //裝置號 非必輸 //String device_info=""; //附加資料 //String attach = userId; //總金額以分為單位，不帶小數點 //int total_fee = intMoney; //訂 單 生 成 時 間 非必輸 //String time_start =""; //訂單失效時間 非必輸 //String time_expire = ""; //商品標記 非必輸 //String goods_tag = ""; //非必輸 //String product_id = ""; //這裡notify_url是 支付完成後微信發給該連結資訊，可以判斷會員是否支付成功，改變訂單狀態等。 String notify_url = baseUrl + "/wx/notifyUrl.do"; SortedMap<String, String> packageParams = new TreeMap<String, String>(); packageParams.put("appid", WxPayConfig.appid); packageParams.put("mch_id", WxPayConfig.partner); packageParams.put("nonce_str", nonce_str); packageParams.put("body", body); packageParams.put("out_trade_no", out_trade_no); packageParams.put("total_fee", total_fee+""); packageParams.put("spbill_create_ip", spbill_create_ip); packageParams.put("notify_url", notify_url); packageParams.put("trade_type", WxPayConfig.trade_type); packageParams.put("openid", openId); RequestHandler reqHandler = new RequestHandler(request, response); reqHandler.init(WxPayConfig.appid, WxPayConfig.appsecret, WxPayConfig.partnerkey); String sign = reqHandler.createSign(packageParams); System.out.println("sign:"+sign); String xml="<xml>"+ "<appid>"+WxPayConfig.appid+"</appid>"+ "<mch_id>"+WxPayConfig.partner+"</mch_id>"+ "<nonce_str>"+nonce_str+"</nonce_str>"+ "<sign>"+sign+"</sign>"+ "<body><![CDATA["+body+"]]></body>"+ "<out_trade_no>"+out_trade_no+"</out_trade_no>"+ "<total_fee>"+total_fee+""+"</total_fee>"+ "<spbill_create_ip>"+spbill_create_ip+"</spbill_create_ip>"+ "<notify_url>"+notify_url+"</notify_url>"+ "<trade_type>"+WxPayConfig.trade_type+"</trade_type>"+ "<openid>"+openId+"</openid>"+ "</xml>"; System.out.println("xml："+xml); String createOrderURL = "https://api.mch.weixin.qq.com/pay/unifiedorder"; String prepay_id=""; try { prepay_id = WeixinPayUtil.getPayNo(createOrderURL, xml); System.out.println("prepay_id:" + prepay_id); if(prepay_id.equals("")){ request.setAttribute("ErrorMsg", "統一支付介面獲取預支付訂單出錯"); response.sendRedirect("error.jsp"); } } catch (Exception e1) { e1.printStackTrace(); } SortedMap<String, String> finalpackage = new TreeMap<String, String>(); String timestamp = Sha1Util.getTimeStamp(); String packages = "prepay_id="+prepay_id; finalpackage.put("appId", WxPayConfig.appid); finalpackage.put("timeStamp", timestamp); finalpackage.put("nonceStr", nonce_str); finalpackage.put("package", packages); finalpackage.put("signType", WxPayConfig.signType); String finalsign = reqHandler.createSign(finalpackage); System.out.println("/jsapi?appid="+WxPayConfig.appid+"&timeStamp="+timestamp+"&nonceStr="+nonce_str+"&package="+packages+"&sign="+finalsign); model.addAttribute("appid", WxPayConfig.appid); model.addAttribute("timeStamp", timestamp); model.addAttribute("nonceStr", nonce_str); model.addAttribute("packageValue", packages); model.addAttribute("sign", finalsign); model.addAttribute("bizOrderId", orderId); model.addAttribute("orderId", orderId); model.addAttribute("payPrice", total_fee); System.out.println("orderId:---------------"+orderId); return "/jsapi"; } catch (NumberFormatException e) { e.printStackTrace(); } return null; }