- <html>
- <head>
- <title>
- 判断客户平台
- </title>
- <basefont face="微软雅黑" size="2" />
- <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
- <meta name="exporter-version" content="Evernote Windows/303244 (zh-CN, DDL); Windows/6.1.7601 Service Pack 1 (Win64);"
- />
- <script type="text/javascript" src="jquery-3.1.1.min.js">
- </script>
- <style>
- body, td { font-family: 微软雅黑; font-size: 10pt; }
- </style>
- </head>
- <body>
- <script type="text/javascript">
- window.onload = function() {
- if (isWeiXin()) {
- window.location = 'http://www.xxoo.com/InterfaceAPI/code';
- } else if (isZFB()) {
- alert('支付宝即将开放....');
- //var p = document.getElementsByTagName('p');
- //p[0].innerHTML = window.navigator.userAgent;
- } else {
- alert('请使用微信或者支付宝App扫码');
- }
- }
- function isWeiXin() {
- var ua = window.navigator.userAgent.toLowerCase();
- if (ua.match(/MicroMessenger/i) == 'micromessenger') {
- return true;
- } else {
- return false;
- }
- }
- function isZFB() {
- var ua = window.navigator.userAgent.toLowerCase();
- if (ua.match(/AlipayClient/i) == 'alipayclient') {
- return true;
- } else {
- return false;
- }
- }
- </script>
- </body>
- </html>
2. 这里是获取 code,回调地址必须使用 URLEncoder 的 utf-8 编码,这里最终只获取 openid,需要获取 UserInfo 其他信息的自行测试,只需要修改一下 scope 的参数,
- @RequestMapping({ "code" })
- public void getCode(HttpServletRequest request, HttpServletResponse response) {
- try {
- //回调地址
- String redirect_uri = URLEncoder.encode(
- "http://www.xxoo.com/InterfaceAPI/openid?codeID=7837283",
- "utf-8");
- String url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid="
- + WechatConfig.APP_ID
- + "&redirect_uri="
- + redirect_uri
- + "&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect";
- response.sendRedirect(url);
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
3. 里面有一个 codeid 的参数,不要在意这个,是用来测试用的。这里只需要 openid, 下面是使用 get 方法获取 json 返回结果,获取到 openid 后,重定向到支付页面。
- @RequestMapping({ "openid" })
- public void getOpenid(String codeID, String code,
- HttpServletResponse response) {
- try {
- String requestUrl = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="
- + WechatConfig.APP_ID
- + "&secret="
- + WechatConfig.APP_SECRET
- + "&code="
- + code
- + "&grant_type=authorization_code";
- if (code != null) {
- String json = webUtils.get(requestUrl, null);
- WechatResult result = new Gson().fromJson(json,
- WechatResult.class);
- OPEN_ID = result.getOpenid();
- System.out.println("====OPEN_ID====" + OPEN_ID);
- response.sendRedirect("http://www.xxoo.com/InterfaceAPI/pay.html");
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
4. 在前端支付页面输入要支付的金额,提交到后台
- $.ajax({
- type: "POST",
- dataType: "html",
- url: "http://www.xxoo.com/InterfaceAPI/weixinPay",
- data: "value=" + self.input.value,
- timeout: 10000,
- cache: true,
- async: true,
- error: function(data) {
- //alert(data+"---value-->"+self.input.value);
- },
- },
- });
5. 后端获取金额然后在后端统一下单,公众号支付有两个地方不一样,一是支付类型要改为 JSAPI,二是需要获取 openid
- @RequestMapping({ "weixinPay" })
- public void weixinPay(HttpServletRequest request,
- HttpServletResponse response) {
- String value = request.getParameter("value");
- WechatTradeTest wechat = new WechatTradeTest();
- String json = wechat.testunifiedOrder(Integer.valueOf(value), OPEN_ID);
- //这里返回json到前端
- write(json, response);
- }
6. 统一下单成功后返回的结果例子:
- <xml>
- <return_code>
- <![CDATA[SUCCESS]]>
- </return_code>
- <return_msg>
- <![CDATA[OK]]>
- </return_msg>
- <appid>
- <![CDATA[wx2421b1c4370ec43b]]>
- </appid>
- <mch_id>
- <![CDATA[10000100]]>
- </mch_id>
- <nonce_str>
- <![CDATA[IITRi8Iabbblz1Jc]]>
- </nonce_str>
- <openid>
- <![CDATA[oUpF8uMuAJO_M2pxb1Q9zNjWeS6o]]>
- </openid>
- <sign>
- <![CDATA[7921E432F65EB8ED0CE9755F0E86D72F]]>
- </sign>
- <result_code>
- <![CDATA[SUCCESS]]>
- </result_code>
- <prepay_id>
- <![CDATA[wx201411101639507cbf6ffd8b0779950874]]>
- </prepay_id>
- <trade_type>
- <![CDATA[JSAPI]]>
- </trade_type>
- </xml>
7. 返回的参数需要重新签名并返回到前端,签名方法与统一下单时的签名是一样的!签名时必须要带上微信商户返回是以 Json 格式返回到前端。
- public String testunifiedOrder(int fee,String openid) {
- WechatUnifiedOrder request = new WechatUnifiedOrder();
- request.setBody("测试商品");
- request.setDetail("一个好商品");
- request.setGoods_tag("测试");
- request.setOut_trade_no(System.currentTimeMillis() + "");
- request.setFee_type("CNY");
- request.setTotal_fee(1);
- request.setSpbill_create_ip("192.168.88.26");
- request.setTime_start(System.currentTimeMillis() + "");
- request.setOpenid(openid);
- //下单成功后返回
- WechatUnifiedOrder.Response response = WechatConfig.getInstance()
- .unifiedOrder(request);
- response.setTime_start(request.getTime_start());
- WeichatData data = new WeichatData();
- data.setAppId(response.getAppid());
- data.setTimeStamp(request.getTime_start());
- data.setNonceStr(response.getNonce_str());
- data.setPrepay_id(response.getPrepay_id());
- data.setSignType("MD5");
- TreeMap requestMap = new TreeMap();
- requestMap.put("appId", response.getAppid());
- requestMap.put("timeStamp", response.getTime_start());
- requestMap.put("nonceStr", response.getNonce_str());
- requestMap.put("package", "prepay_id="+response.getPrepay_id());
- requestMap.put("signType","MD5");
- data.setPaySign(sign(requestMap).toUpperCase());
- return new Gson().toJson(data);
- }
8. 前端需要解析 json,获取对应的值,唤醒微信支付
- success: function(data) {
- if (data != null) {
- var obj = eval("(" + data + ")");
- appId = obj["appId"];
- //timeStamp = new Date().getTime();
- timeStamp = obj["timeStamp"];
- nonceStr = obj["nonceStr"];
- package = obj["prepay_id"];
- paySign = obj["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();
- }
- } else {
- alert("支付失败");
- }
- },
- //微信回调
- function onBridgeReady(){
- WeixinJSBridge.invoke(
- 'getBrandWCPayRequest', {
- "appId" :appId,
- "timeStamp":timeStamp,
- "nonceStr" :nonceStr,
- "package" :"prepay_id="+package,
- "signType" :"MD5",
- "paySign" : paySign
- },
- function(res){
- if(res.err_msg == "get_brand_wcpay_request:ok" ) {
- }else {
- }
- }
- );
到这里基本成功了,同时感谢一位网友的文章:http://blog.csdn.net/u012706811/article/details/52988782。
来源: