[学习交流] 【上海校区】java开发Demo~微信扫码支付，java开发示例

【转载】 https://blog.csdn.net/han_xiaoxue/article/details/78954749
开发所需工具类

以上工具类以上传到我的资源，下载地址
http://download.csdn.net/download/han_xiaoxue/10184832

开发所需jar

具体的代码不贴了，说明下PayConfigUtil中的参数

APP_ID和APP_SECRET在公众平台
MCH_ID和API_KEY在商户平台,其中API_KEY是自己设置的，并不是自动生成的。

Controller

通过此方法，前往可以生成二维码的页面

//微信前往支付页面 @RequestMapping(value = "towxPay") public ModelAndView towxPay(ModelMap map,HttpServletRequest request,String chapterId,String chapterName,String price) throws IOException{ ModelAndView mav = new ModelAndView(); mav.setViewName("jsp/pay/weixinpayma"); HttpSession session = request.getSession(); session.setAttribute("chapterId", chapterId); session.setAttribute("chapterName", chapterName); session.setAttribute("price", price); return mav; }

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返回的页面如下

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title><script src="<%=basePath%>js/jquery-3.1.1.min.js"></script></head><body> <div id="wxpayma">  <img alt="" src="<%=basePath%>index/payImg"> </div> <script> /* ajax轮回，不停的访问Controller，直到wxPayType=1时，付款成功 */ var num = 0; $(function(){ panduanWXPay(); }); function panduanWXPay(){ $.post("<%=basePath%>index/panduanPay",function(data){ var wxPayType = data.wxPayType; if(wxPayType==1){ /* 成功 */ window.location.href='<%=basePath%>index/gouMai'; }else if(wxPayType==0 && num!=400){ num++; panduanWXPay(); }else{ alert("支付超时"); } }); } </script></body></html>

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payImg方法

//微信支付，生成二维码 @RequestMapping(value = "payImg") public void payImg(HttpServletRequest request, HttpServletResponse response) throws IOException{ HttpSession session = request.getSession(); String chapterName=(String)session.getAttribute("chapterName"); String price=(String)session.getAttribute("price"); int defaultWidthAndHeight=200; String nonce_str = PayCommonUtil.getNonce_str(); long time_stamp = System.currentTimeMillis() / 1000; String product_id = chapterName+"*"+price;//订单名字和价钱，拼到了一起，后面用到的时候再拆 String key = PayConfigUtil.API_KEY; // key SortedMap<Object, Object> packageParams = new TreeMap<Object, Object>(); packageParams.put("appid", PayConfigUtil.APP_ID); packageParams.put("mch_id", PayConfigUtil.MCH_ID); packageParams.put("time_stamp", String.valueOf(time_stamp)); packageParams.put("nonce_str", nonce_str); packageParams.put("product_id", product_id);// packageParams.put("chapterId", chapterId);// packageParams.put("price", price); String sign = PayCommonUtil.createSign("UTF-8", packageParams,key);//MD5哈希 packageParams.put("sign", sign); //生成参数 String str = ToUrlParams(packageParams); String payurl = "weixin://wxpay/bizpayurl?" + str;// logger.info("payurl:"+payurl); //生成二维码 Map<EncodeHintType, Object> hints=new HashMap<EncodeHintType, Object>(); // 指定纠错等级 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); // 指定编码格式 hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); hints.put(EncodeHintType.MARGIN, 1); try { BitMatrix bitMatrix = new MultiFormatWriter().encode(payurl,BarcodeFormat.QR_CODE, defaultWidthAndHeight, defaultWidthAndHeight, hints); OutputStream out = response.getOutputStream(); MatrixToImageWriter.writeToStream(bitMatrix, "png", out);//输出二维码 out.flush(); out.close(); } catch (WriterException e) { // TODO Auto-generated catch block e.printStackTrace(); } }

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public String ToUrlParams(SortedMap<Object, Object> packageParams){ //实际可以不排序 StringBuffer sb = new StringBuffer(); Set es = packageParams.entrySet(); Iterator it = es.iterator(); while (it.hasNext()) { Map.Entry entry = (Map.Entry) it.next(); String k = (String) entry.getKey(); String v = (String) entry.getValue(); if (null != v && !"".equals(v)) { sb.append(k + "=" + v + "&"); } } sb.deleteCharAt(sb.length()-1);//删掉最后一个& return sb.toString(); }

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扫码时触动此方法，会在手机端显示付款信息
要将此方法的路径配置到回调url里，微信公众平台–>微信支付–>开发配置

//微信扫码的时候，触发此方法 @RequestMapping(value = "Re_notify") public void Re_notify(HttpServletRequest request, HttpServletResponse response) throws IOException{ HttpSession session = request.getSession(); String chapterId=(String)session.getAttribute("chapterId"); String chapterName=(String)session.getAttribute("chapterName"); String price=(String)session.getAttribute("price"); System.out.println(chapterId+":"+chapterName+":"+price); // 读取xml InputStream inputStream; StringBuffer sb = new StringBuffer(); inputStream = request.getInputStream(); String s; BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")); while ((s = in.readLine()) != null) { sb.append(s); } in.close(); inputStream.close(); SortedMap<Object, Object> packageParams = PayCommonUtil.xmlConvertToMap(sb.toString());// logger.info(packageParams); // 账号信息 String key = PayConfigUtil.API_KEY; // key String resXml="";//反馈给微信服务器 // 验签 if (PayCommonUtil.isTenpaySign("UTF-8", packageParams, key)) { //appid openid mch_id is_subscribe nonce_str product_id sign //统一下单 String openid = (String)packageParams.get("openid"); String product_id = (String)packageParams.get("product_id"); //解析product_id，计算价格等 String thePricce = product_id.substring(product_id.lastIndexOf("*")+1); String newProductId = product_id.substring(0, product_id.indexOf("*")); String out_trade_no = String.valueOf(System.currentTimeMillis()); // 订单号 String order_price = thePricce; // 价格"1" 注意：价格的单位是分 String body = newProductId; // 商品名称product_id 这里设置为product_id String attach = "十倍课"; //附加数据 String nonce_str0 = PayCommonUtil.getNonce_str(); // 获取发起电脑 ip String spbill_create_ip = PayConfigUtil.CREATE_IP; String trade_type = "NATIVE"; SortedMap<Object,Object> unifiedParams = new TreeMap<Object,Object>(); unifiedParams.put("appid", PayConfigUtil.APP_ID); // 必须 unifiedParams.put("mch_id", PayConfigUtil.MCH_ID); // 必须 unifiedParams.put("out_trade_no", out_trade_no); // 必须 unifiedParams.put("product_id", product_id); unifiedParams.put("body", body); // 必须 unifiedParams.put("attach", attach); unifiedParams.put("total_fee", order_price); // 必须 unifiedParams.put("nonce_str", nonce_str0); // 必须 unifiedParams.put("spbill_create_ip", spbill_create_ip); // 必须 unifiedParams.put("trade_type", trade_type); // 必须 unifiedParams.put("openid", openid); unifiedParams.put("notify_url", PayConfigUtil.NOTIFY_URL);//异步通知url String sign0 = PayCommonUtil.createSign("UTF-8", unifiedParams,key); unifiedParams.put("sign", sign0); //签名 String requestXML = PayCommonUtil.getRequestXml(unifiedParams); // logger.info(requestXML); //统一下单接口 String rXml = HttpUtil.postData(PayConfigUtil.UFDODER_URL, requestXML); //统一下单响应 SortedMap<Object, Object> reParams = PayCommonUtil.xmlConvertToMap(rXml);// logger.info(reParams); //验签 if (PayCommonUtil.isTenpaySign("UTF-8", reParams, key)) { // 统一下单返回的参数 String prepay_id = (String)reParams.get("prepay_id");//交易会话标识 2小时内有效 String nonce_str1 = PayCommonUtil.getNonce_str(); SortedMap<Object,Object> resParams = new TreeMap<Object,Object>(); resParams.put("return_code", "SUCCESS"); // 必须 resParams.put("return_msg", "OK"); resParams.put("appid", PayConfigUtil.APP_ID); // 必须 resParams.put("mch_id", PayConfigUtil.MCH_ID); resParams.put("nonce_str", nonce_str1); // 必须 resParams.put("prepay_id", prepay_id); // 必须 resParams.put("result_code", "SUCCESS"); // 必须 resParams.put("err_code_des", "OK"); String sign1 = PayCommonUtil.createSign("UTF-8", resParams,key); resParams.put("sign", sign1); //签名 resXml = PayCommonUtil.getRequestXml(resParams);// logger.info(resXml); }else{// logger.info("签名验证错误"); resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[签名验证错误]]></return_msg>" + "</xml> "; } }else{// logger.info("签名验证错误"); resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[签名验证错误]]></return_msg>" + "</xml> "; } //------------------------------ //处理业务完毕 //------------------------------ BufferedOutputStream out = new BufferedOutputStream( response.getOutputStream()); out.write(resXml.getBytes()); out.flush(); out.close(); }

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微信支付成功时访问的方法
密码错误等未支付成功的情况下，不会访问。
此路径是PayConfigUtil中配置的

int wxPayType = 0; //微信扫码支付回调 @RequestMapping(value = "Notify1") public void Notify1(HttpServletRequest request, HttpServletResponse response) throws IOException{ InputStream inputStream; StringBuffer sb = new StringBuffer(); inputStream = request.getInputStream(); String s; BufferedReader in = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")); while ((s = in.readLine()) != null) { sb.append(s); } in.close(); inputStream.close(); SortedMap<Object, Object> packageParams = PayCommonUtil.xmlConvertToMap(sb.toString());// logger.info(packageParams); // 账号信息 String key = PayConfigUtil.API_KEY; // key String resXml = ""; // 反馈给微信服务器 // 判断签名是否正确 if (PayCommonUtil.isTenpaySign("UTF-8", packageParams, key)) { // ------------------------------ // 处理业务开始 // ------------------------------ if ("SUCCESS".equals((String) packageParams.get("result_code"))) { // 这里是支付成功 ////////// 执行自己的业务逻辑//////////////// String mch_id = (String) packageParams.get("mch_id"); String openid = (String) packageParams.get("openid"); String is_subscribe = (String) packageParams.get("is_subscribe"); String out_trade_no = (String) packageParams.get("out_trade_no"); String total_fee = (String) packageParams.get("total_fee");//// 将用于标记是否成功的全局变量wxPayType设置为1，ajax轮回时，可以获取到其变化，从而进行页面跳转//// wxPayType=1; System.out.println("33333333333333333333333333333:"+wxPayType);// "支付成功"// 通知微信.异步确认成功.必写.不然会一直通知后台.八次之后就认为交易失败了. resXml = "<xml>" + "<return_code><![CDATA[SUCCESS]]></return_code>" + "<return_msg><![CDATA[OK]]></return_msg>" + "</xml> "; } else {// logger.info("支付失败,错误信息：" + packageParams.get("err_code")); resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[报文为空]]></return_msg>" + "</xml> "; } } else {// logger.info("签名验证错误"); resXml = "<xml>" + "<return_code><![CDATA[FAIL]]></return_code>" + "<return_msg><![CDATA[签名验证错误]]></return_msg>" + "</xml> "; } // ------------------------------ // 处理业务完毕 // ------------------------------ BufferedOutputStream out = new BufferedOutputStream(response.getOutputStream()); out.write(resXml.getBytes()); out.flush(); out.close(); }

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ajax不停轮回，判断是否登录成功的方法

@RequestMapping(value = "panduanPay") @ResponseBody public Map<String,Object> panduanPay(HttpServletRequest request) throws IOException{ Map<String,Object> map = new HashMap<String,Object>(); try { Thread.sleep(500); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } //给页面返回wxPayType值，成功是返回的是1；还未支付成功，返回的是初始值0 map.put("wxPayType",wxPayType); return map; }

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成功后页面跳转的方法

//购买成功，存入购买表中 @RequestMapping(value="gouMai") @ResponseBody public ModelAndView gouMai(HttpServletRequest req,String a,String urlName,String couName,ModelMap map){ ModelAndView mav = new ModelAndView(); Map<String,String> mapp1 = new HashMap<String,String>();// SysUserTab login_user = sysuserService.getSysUserById(userId); HttpSession session = req.getSession(); SysUserTab login_user1 = (SysUserTab) session.getAttribute("login_user"); String userId = login_user1.getUserId();// session.setAttribute("login_user", login_user); String chapterId = (String) session.getAttribute("chapterId"); mapp1.put("userId", userId); mapp1.put("chapterId", chapterId); int num = sysBuyService.getBuyCount(mapp1); if(num==0){ mapp1.put("buyId", UUID.randomUUID().toString().replace("-", "")); sysBuyService.insertBuy(mapp1); }

不二晨 · 不二晨

很不错，受教了

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[学习交流] 【上海校区】java开发Demo~微信扫码支付，java开发示例

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