java微信支付接入詳細流程
阿新 • • 發佈:2019-01-26
背景
由於專案是採用Java編寫的,微信包括微信支付大都是PHP相關,於是微信支付官方文件對java的支援就不是很友好,在網上找了很多文章,基本上沒有一篇是真正跑的通的,經過一番整理,先將java接入微信支付詳細流程總結出來以便後續使用。
步驟一
準備階段:已認證微訊號,且通過微信支付認證,這個可以看微信文件,很詳細,這裡就不再重複。
步驟二
配置授權目錄,官方推薦使用https型別的url,不知道http能不能行,個人也推薦使用https的保證不會錯。
配置授權域名
步驟三
微信支付二次開發所需要的引數:
APP_ID,APP_KEY,PARTNER,PARTNER_KEY(AppSecret)
APP_ID和PARTNER_KEY(AppSecret)
PARTNER
APP_KEY(自行設定32位字元)
步驟四
4.1通過頁面跳轉到確認支付頁面,其中的redirect_uri必須是配置授權目錄下的
- <html>
- <head>
- <title>支付測試</title>
- </head>
- <body>
- <ahref="https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx619890d997071358&redirect_uri=https%3A%2F%2Fm.yangji.com%2Fpay%2FpayTest.jsp&response_type=code&scope=snsapi_base&state=123#wechat_redirect"
- </body>
- </html>
4.2 獲取到openid,再經伺服器向微信請求獲取prepay_id,封裝欄位並進行簽名後通過jsapi調起微信支付
網頁端
- <%@ page language="java"import="java.util.*"pageEncoding="UTF-8"%>
- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
- <html>
- <head>
- <metacharset="utf-8"/>
- <metaname="viewport"content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0"/>
- <metaname="apple-mobile-web-app-capable"content="yes"/>
- <metaname="apple-mobile-web-app-status-bar-style"content="black"/>
- <metaname="format-detection"content="telephone=no"/>
- <title>測試支付</title>
- <linkhref="../css/css.css?v=1.0"rel="stylesheet"type="text/css">
- </head>
- <body>
- <divclass="index_box">
- <divclass="apply_name">微信js支付測試</div>
- <divclass="branch_con">
- <ul>
- <li><spanclass="name">測試支付資訊[]</span></li>
- </ul>
- <pclass="cz_btn"><ahref="javascript:pay();"class="btn_1">立即支付</a></p>
- </div>
- </div>
- <%
- String code = request.getParameter("code");
- %>
- <inputtype="text"id="code"value="<%out.print(code); %>"/>
- <inputtype="text"id="path"value="${pageContext.request.contextPath}"/>
- <div><hr/>
- code:<%out.print(code); %>
- </div>
- <scripttype="text/javascript">
- var appId,timeStamp,nonceStr,pg,signType,paySign;
- function onBridgeReady(){
- WeixinJSBridge.invoke(
- 'getBrandWCPayRequest', {
- "appId" : appId, //公眾號名稱,由商戶傳入
- "timeStamp": timeStamp, //時間戳,自1970年以來的秒數
- "nonceStr" : nonceStr, //隨機串
- "package" : "prepay_id=" + pg,
- "signType" : signType, //微信簽名方式:
- "paySign" : paySign //微信簽名
- },
- function(res){
- if(res.err_msg == "get_brand_wcpay_request:ok" ) {
- alert("支付成功");
- }
- }
- );
- }
- function pay(){
- var code = document.getElementById("code").value;
- var path = document.getElementById("path").value;
- send_request(function(value){
- var json = eval("(" + value + ")");
- if(json.length > 0){
- appId = json[0].appId;
- timeStamp = json[0].timeStamp;
- nonceStr = json[0].nonceStr;
- pg = json[0].pg;
- signType = json[0].signType;
- paySign = json[0].paySign;
- if (typeof WeixinJSBridge == "undefined"){
- if( document.addEventListener ){
- document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
- }else if (document.attachEvent){
- document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
- document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
- }
- }else{
- onBridgeReady();
- }
- }
- },path+"/pay/payparm.htm?openId="+code, true);
- }
- function send_request(callback, urladdress,isReturnData){
- var xmlhttp = getXMLHttpRequest();
- xmlhttp.onreadystatechange = function(){
- if (xmlhttp.readyState == 4) {
- try{
- if(xmlhttp.status == 200){
- if(isReturnData && isReturnData==true){
- callback(xmlhttp.responseText);
- }
- }else{
- callback("頁面找不到!"+ urladdress +"");
- }
- } catch(e){
- callback("請求傳送失敗,請重試!" + e);
- }
- }
- }
- xmlhttp.open("POST", urladdress, true);
- xmlhttp.send(null);
- }
- function getXMLHttpRequest() {
- var xmlhttp;
- if (window.XMLHttpRequest) {
- try {
- xmlhttp = new XMLHttpRequest();
- xmlhttp.overrideMimeType("text/html;charset=UTF-8");
- } catch (e) {}
- } else if (window.ActiveXObject) {
- try {
- xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
- } catch (e) {
- try {
- xmlhttp = new ActiveXObject("Msxml2.XMLHttp");
- } catch (e) {
- try {
- xmlhttp = new ActiveXObject("Msxml3.XMLHttp");
- } catch (e) {}
- }
- }
- }
- return xmlhttp;
- }
- </script>
- </body>
- </html>
伺服器端
- @RequestMapping("/pay/payparm")
- publicvoid payparm(HttpServletRequest request, HttpServletResponse response){
- try {
- // 獲取openid
- String openId = (String) request.getSession().getAttribute("openId");
- if (openId == null) {
- openId = getUserOpenId(request);
- }
- String appid = WXConfig.APP_ID;
- String paternerKey = WXConfig.PERTNER_KEY;
- String out_trade_no = getTradeNo();
- Map<String, String> paraMap = new HashMap<String, String>();
- paraMap.put("appid", appid);
- paraMap.put("attach", "測試");
- paraMap.put("body", "測試購買支付");
- paraMap.put("mch_id", WXConfig.PARTNER);
- paraMap.put("nonce_str", create_nonce_str());
- paraMap.put("openid", openId);
- paraMap.put("out_trade_no", out_trade_no);
- paraMap.put("spbill_create_ip", getAddrIp(request));
- paraMap.put("total_fee", "1");
- paraMap.put("trade_type", "JSAPI");
- paraMap.put("notify_url", "http://m.ebiaotong.com/WXPay/notify");// 此路徑是微信伺服器呼叫支付結果通知路徑
- String sign = getSign(paraMap, paternerKey);
- paraMap.put("sign", sign);
- // 統一下單 https://api.mch.weixin.qq.com/pay/unifiedorder
- String url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
- String xml = ArrayToXml(paraMap);
- String xmlStr = HttpKit.post(url, xml);
- // 預付商品id
- String prepay_id = "";
- if (xmlStr.indexOf("SUCCESS") != -1) {
- Map<String, String> map = doXMLParse(xmlStr);
- prepay_id = (String) map.get("prepay_id");
- }
- String timeStamp = create_timestamp();
- String nonceStr = create_nonce_str();
- Map<String, String> payMap = new HashMap<String, String>();
- payMap.put("appId", appid);
- payMap.put("timeStamp", timeStamp);
- payMap.put("nonceStr", nonceStr);
- payMap.put("signType", "MD5");
- payMap.put("package", "prepay_id=" + prepay_id);
- String paySign = getSign(payMap, paternerKey);
- payMap.put("pg", prepay_id);
- payMap.put("paySign", paySign);
- // 拼接並返回json
- StringBuilder sBuilder = new StringBuilder("[{");
- sBuilder.append("appId:'").append(appid).append("',")
- .append("timeStamp:'").append(timeStamp).append("',")
- .append("nonceStr:'").append(nonceStr).append("',")
- .append("pg:'").append(prepay_id).append("',")
- .append("signType:'MD5',")
- .append("paySign:'").append(paySign).append("'");
- sBuilder.append("}]");
- response.getWriter().print(sBuilder.toString());
- response.getWriter().close();
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
測試結果