java實現銀聯商務公眾號+服務窗對接----支付下單

GitLab地址：https://gitlab.com/982837387/UnionPayGetWay.git
本文對接銀聯商務公眾號+服務窗支付，實現支付下單、訂單查詢、訂單退款、退款查詢和訂單關閉幾個功能，使用到銀聯商務的公眾+服務窗支付接口規范，請自行百度下載。
一、接入前準備
創建maven項目，項目目錄如下，各目錄功能不再詳細介紹，直接看接口和功能。

二、接口及代碼實現
1.支付下單接口
1.1接口規范
接口規范請查看下載的銀聯商務公眾號+服務窗接口規范下單接口部分，這里不做展示。
1.2 代碼實現
1.2.1 UnionPayOnlineController代碼

package com.unionpay.controller;import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.util.HashMap; import java.util.Map;import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod;@Controller @CrossOrigin @RequestMapping("/lay") public class UnionPayOnlineController {private final static Logger logger = LoggerFactory.getLogger(UnionPayOnlineController.class);@Autowiredprivate UnifiedOrderServiceimpl unionpayserviceimpl;/*** 公眾號支付下單接口* 調用該接口，跳轉到html支付頁面* @param request* @param response* @param jsonreq* @return* @throws UnsupportedEncodingException */@RequestMapping(value = "/UnifiedPay", method = RequestMethod.GET)public String unionpay(HttpServletRequest request, HttpServletResponse response,Map resultdatamap) throws UnsupportedEncodingException {Map datamap = new HashMap(); //客戶端請求數據String key = UnionPayConstants.GGMD5KEY; //國光MD5密鑰//---------------------取到URL請求數據----------------------------------------------------logger.info("getQueryString:" + request.getQueryString()); //請求url的QueryStringString mid = request.getParameter("mid");String tid = request.getParameter("tid");String instMid = request.getParameter("instMid");String msgSrc = request.getParameter("msgSrc");String totalAmount = request.getParameter("totalAmount");String payType = request.getParameter("payType");String notifyUrl = request.getParameter("notifyUrl");String returnUrl = request.getParameter("returnUrl");String sign = request.getParameter("sign");//--------------------step1 對請求字段值進行URLDecoder轉碼----------------------------datamap.put("mid",URLDecoder.decode(mid, "UTF-8"));datamap.put("tid",URLDecoder.decode(tid, "UTF-8"));datamap.put("instMid",URLDecoder.decode(instMid, "UTF-8"));datamap.put("msgSrc",URLDecoder.decode(msgSrc, "UTF-8"));datamap.put("totalAmount",URLDecoder.decode(totalAmount, "UTF-8"));datamap.put("msgType",URLDecoder.decode(payType, "UTF-8"));datamap.put("notifyUrl",URLDecoder.decode(notifyUrl, "UTF-8"));datamap.put("returnUrl",URLDecoder.decode(returnUrl, "UTF-8"));logger.info("URLDecoder轉碼后datamap = " + datamap);//-------------------------step2驗證簽名------------------------------------------------------try {if (!PayUtil.verifySign(datamap,key,sign)) {resultdatamap.put("returnInfo", "簽名錯誤");resultdatamap.put("returnCode", "Bad_Sign");//String failureurl = unionpayserviceimpl.CreatefailureUrl(resultmap);//logger.info("url = " + failureurl);return "failure"; }//-----------------------step3 驗證傳參完整性-------------------------- //驗證公共參數完整性if(!PayUtil.verifyParameter(datamap)) {resultdatamap.put("returnCode", "Common_Value_Error");resultdatamap.put("returnInfo", "缺少必要公共參數");return "failure";}//驗證接口參數完整性if(datamap.get("totalAmount").equals("") || datamap.get("msgType").equals("") || datamap.get("notifyUrl").equals("") || datamap.get("returnUrl").equals("") ) {resultdatamap.put("returnCode", "Value_Error");resultdatamap.put("returnInfo", "缺少必要接口參數,必傳接口參數不允許為空");return "failure";}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();resultdatamap.put("returnCode", "System_Error");resultdatamap.put("returnInfo", "系統異常");return "failure";}//-----------------------step4 傳值并生成鏈接跳轉到支付頁面--------------------------------//Map resultdatamap = new HashMap();resultdatamap.put("mid", mid); //商戶號resultdatamap.put("tid", tid); //終端號resultdatamap.put("instMid", instMid); //機構商戶號resultdatamap.put("msgSrc", msgSrc); //消息來源resultdatamap.put("totalAmount", totalAmount); //總金額resultdatamap.put("msgType", payType); //支付類型resultdatamap.put("notifyUrl", notifyUrl); //支付結果通知resultdatamap.put("returnUrl", returnUrl); //網頁跳轉地址resultdatamap.put("merOrderId", unionpayserviceimpl.CreateOrderID()); //生成商戶訂單號logger.info("resultdatamap = " + resultdatamap);//根據payType判斷回調到哪個支付頁面if(resultdatamap.get("msgType").equals("WXPay.jsPay")) { //微信支付return "wxunionpay";}else {return "aliunionpay"; //支付寶支付}}/*** a支付失敗頁面* @param request* @param response* @param returnCode* @param map* @return*/@RequestMapping(value = "/failure", method = RequestMethod.GET)public String failure(HttpServletRequest request, HttpServletResponse response,String returnCode,Map map) {map.put("returnCode", returnCode); return "failure"; }/*** a根據支付頁面請求，調起支付下單* @param request* @param response* @param totalAmount* @param msgType* @return*/@RequestMapping(value = "/unifiedpay", method = RequestMethod.GET)public String index(HttpServletRequest request, HttpServletResponse response, Map map) {Map reqmap = new HashMap();//---------------------取到URL請求數據-----------------------------logger.info("unifiedpay getQueryString:" + request.getQueryString()); //請求url的QueryStringString mid = request.getParameter("mid");String tid = request.getParameter("tid");String instMid = request.getParameter("instMid");String msgSrc = request.getParameter("msgSrc");String totalAmount = request.getParameter("totalAmount");String YtotalAmount = PayUtil.changeY2F(totalAmount); //元轉分logger.info("YtotalAmount = " + YtotalAmount);String msgType = request.getParameter("msgType");String notifyUrl = request.getParameter("notifyUrl");String returnUrl = request.getParameter("returnUrl");String merOrderId = request.getParameter("merOrderId");reqmap.put("mid", mid);reqmap.put("tid", tid);reqmap.put("instMid", instMid);reqmap.put("msgSrc", msgSrc);reqmap.put("totalAmount", YtotalAmount);reqmap.put("msgType", msgType);reqmap.put("notifyUrl", notifyUrl);reqmap.put("returnUrl", returnUrl);reqmap.put("merOrderId", merOrderId);logger.info("reqmap = " + reqmap);String url = "";try {url = unionpayserviceimpl.UnifiedOrder(reqmap);//logger.info("請求URL = " + url);} catch (UnsupportedEncodingException e) {// TODO Auto-generated catch blocke.printStackTrace();} // if(url.equals("缺少必要參數，請核實后再進行下單")) { // map.put("returnCode", "缺少必要參數，請核實后再進行下單"); // return "failure"; // }return "redirect:" + url; //重定向到下單頁面 }}

1.2.2 UnionpayServiceimpl代碼
本部分代碼為銀聯商務支付下單接口服務。

/*** 銀聯商務支付下單* return map* @throws UnsupportedEncodingException */@Overridepublic String UnifiedOrder(Map map) throws UnsupportedEncodingException {// TODO Auto-generated method stubMap reqmap = new HashMap(); //請求銀聯商務mapreqmap.put("mid", map.get("mid")); //商戶號reqmap.put("tid", map.get("tid")); //終端號reqmap.put("instMid", map.get("instMid"));reqmap.put("msgSrc", map.get("msgSrc")); //消息來源reqmap.put("msgId", "UnionPay_F001"); //自定義reqmap.put("msgType", map.get("msgType")); //支付類型,前端傳入//報文請求時間String aligetTime = PayUtil.aligetTime();logger.info("end_time = " + aligetTime);reqmap.put("requestTimestamp", aligetTime); //商戶訂單號//reqmap.put("msgSrcId", this.msgSrcId); //來源編號 // String orderid = GGitUtil.createOrderID(); // StringBuffer buff = new StringBuffer(); // buff.append(this.msgSrcId); // buff.append(orderid);reqmap.put("merOrderId", map.get("merOrderId"));reqmap.put("originalAmount", map.get("totalAmount")); //前端傳入reqmap.put("totalAmount",map.get("totalAmount")); //訂單金額reqmap.put("notifyUrl", map.get("notifyUrl")); //支付結果通知地址reqmap.put("returnUrl", map.get("returnUrl")); //網頁跳轉地址//生成待簽名字符串并進行MD5加密String builderSignStr = "";try {builderSignStr = PayUtil.builderSignStr(reqmap,UnionPayConstants.MD5KEY);//signString = PayUtil.generateSignature(reqmap, UnionPayConstants.MD5KEY);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}reqmap.put("sign", builderSignStr);logger.info("reqmap= " + reqmap);//拼接請求URLStringBuffer url = new StringBuffer();try {url.append("https://qr-test2.chinaums.com/netpay-portal/webpay/pay.do?");url.append("requestTimestamp=" + URLEncoder.encode((String) reqmap.get("requestTimestamp"), "UTF-8") +"&mid=" + URLEncoder.encode((String) reqmap.get("mid"), "UTF-8") + "&tid="+ URLEncoder.encode((String) reqmap.get("tid"), "UTF-8") + "&instMid=" + URLEncoder.encode((String) reqmap.get("instMid"), "UTF-8") + "&msgSrc=" + URLEncoder.encode((String) reqmap.get("msgSrc"), "UTF-8") + "&merOrderId=" + URLEncoder.encode((String) reqmap.get("merOrderId"), "UTF-8") + "&totalAmount=" + URLEncoder.encode((String) reqmap.get("totalAmount"), "UTF-8") + "&msgId=" + URLEncoder.encode((String) reqmap.get("msgId"), "UTF-8") + "&msgType=" + URLEncoder.encode((String) reqmap.get("msgType"), "UTF-8") + "&originalAmount=" + URLEncoder.encode((String) reqmap.get("originalAmount"), "UTF-8") + "?ifyUrl=" + URLEncoder.encode((String) reqmap.get("notifyUrl"), "UTF-8") + "&returnUrl=" + URLEncoder.encode((String) reqmap.get("returnUrl"), "UTF-8") + "&sign=" + URLEncoder.encode((String) reqmap.get("sign"), "UTF-8"));logger.info("銀聯商務下單url = " + url);} catch (Exception e) {// TODO: handle exceptionreturn "缺少必要參數，請核實后再進行下單";}return url.toString();}

1.3 支付結果截圖
在下單接口中，我先在寫了一個支付的html頁面，用于顯示支付信息，用戶點擊“去支付”按鈕調起圖二支付頁面，支付完成時，用戶點擊“完成”按鈕，跳轉到程序中指定的returnurl地址中，支付結果通知到notifyurl地址中。
支付下單參數由銀聯商務分配的參數填入。

訪問地址：http://172.20.10.2:8080/UnionPay/lay/UnifiedPay(本地環境訪問)
支付連接為：http://172.20.10.2:8080/UnionPay/lay/UnifiedPay?mid=******&tid=******&instMid=******&msgSrc=******&payType=WXPay.jsPay&totalAmount=0.11?ifyUrl=http%3A%2F%2F******&returnUrl=http%3A%2F%2F******&sign=B2AD890DD4636C9A9AEA03F265BE695A

根據博友的需求，這里增加下銀商驗簽部分代碼

/*** 生成 MD5** @param data* 待處理數據* @return MD5結果*/public static String MD5(String data) throws Exception {java.security.MessageDigest md = MessageDigest.getInstance("MD5");byte[] array = md.digest(data.getBytes("UTF-8"));StringBuilder sb = new StringBuilder();for (byte item : array) {sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));}return sb.toString().toUpperCase();}/*** 生成待簽名數據* @param params* @return* @throws Exception */public static String builderSignStr(Map<String, Object> params,String md5key) throws Exception {Set<String> keySet = params.keySet();List<String>keyList = new ArrayList<String>(keySet);Collections.sort(keyList);StringBuilder sb = new StringBuilder();for (String key : keyList) {sb.append(key);sb.append("=");sb.append(params.get(key));sb.append("&");}sb.deleteCharAt(sb.length() - 1); //去掉最后一個&sb.append(md5key);logger.info("builderSignStr= " + sb.toString());logger.info("驗證sign:" + MD5(sb.toString()).toUpperCase());return MD5(sb.toString()).toUpperCase();}

總結

以上是生活随笔為你收集整理的java对接银联商务公众号+服务窗支付（1）的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。