微信JSSDK支付

 var appId,timeStamp,nonceStr,package,signType,paySign;
 function goumai(){
     $.confirm({
     　　title: '确认购买',
     　　text: '<div class="comfirm-tip">确认购买?</div>',
     　　onOK: function () {
     　　　　$('#rechargeHalf').removeClass('weui-popup__container--visible');
        　　$('#rechargeHalf').hide();
        　　var price = ($("#monid").text() * 100).toFixed(0);
        　　mui.ajax(wxshop.serverUrl+"/wxUserCenter/gotozhifu",{
        　　　　type:'post',
        　　　　data:{
           　　　　code:wxshop.getUrlParam("code"),
           　　　　price:price,
           　　},
           　　dataType:'json',
           　　success:function(data){
           　　　　if(data.ret == 1){
              　　　　appId=data.payMap.appId;
                 　　timeStamp=data.payMap.timeStamp;
                 　　nonceStr=data.payMap.nonceStr;
                 　　package=data.payMap.package;
                 　　signType=data.payMap.signType;
                 　　paySign=data.payMap.paySign;
                 　　callpay();
           　　　　}
           　　　　if(data.ret == 2){
           　　　　　　wxshop.getOpenId(data.appid);
              　　　　return;
           　　　　}
           　　　　if(data.ret == 0){
           　　　　　　alert(data.msg);
           　　　　}
       　　　　}
   　　　　});
 　　　　},
        onCancel: function () {
        　　$('#rechargeHalf').removeClass('weui-popup__container--visible');
           $('#rechargeHalf').hide();
        }
      });
 　　　function callpay(){
      　　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();
         }
　　}
　　function onBridgeReady(){
   　　WeixinJSBridge.invoke( 'getBrandWCPayRequest', {
      　　"appId":appId,     //公众号名称,由商户传入
         "timeStamp":timeStamp,         //时间戳,自1970年以来的秒数
         "nonceStr":nonceStr, //随机串
         "package":package,
         "signType":signType,         //微信签名方式：
         "paySign":paySign //微信签名
　　　　},
       function(res){
       　　if(res.err_msg == "get_brand_wcpay_request:ok" ) {
          　　console.log('支付成功');
          }else if(res.err_msg == "get_brand_wcpay_request:cancel"){
          　　console.log('支付取消');
          }else if(res.err_msg == "get_brand_wcpay_request:fail"){
          　　console.log('支付失败');
             WeixinJSBridge.call('closeWindow');
          }
　　　　});
　　}
}

 public class PayUtil {

     /**
        * 微信jssdk支付
        * @param request
        * @param response
        * @param fee
        * @return
     */
     public static Map pay(HttpServletRequest request, HttpServletResponse response, String fee) {
     　　Map preData = new HashMap();
     　　Map<String, String> payMap = new HashMap<String, String>();
     　　try {
        　　String openid = null;
        　　WsMember member = WsUtils.getMember(request, response);
           if (member != null) {
           　　openid = member.getOpenId();
           }
           WxAccount account = WsUtils.getAccount();
         　preData.put("appid", account.getAccountAppid());
           preData.put("mch_id", account.getMchId());
           preData.put("nonce_str", WXPayUtil.generateNonceStr());
           String body = utf8Utils.toUTF8("微信支付");
           preData.put("body", body);
           Random random = new Random();
           String out_trade_no = "";
           for (int i = 0; i < 30; i++) {
               out_trade_no += random.nextInt(10);
           }
 //        preData.put("out_trade_no", WXPayUtil.generateNonceStr());
         　preData.put("total_fee", fee);
           preData.put("spbill_create_ip", request.getLocalAddr());
           preData.put("notify_url", "xxx.com/bpphone/index.html");
           preData.put("openid", openid);
           preData.put("trade_type", "JSAPI");
           String sign = WXPayUtil.generateSignature(preData, account.getPayKey());
           preData.put("sign", sign);
           String xml = WXPayUtil.mapToXml(preData);
           String unifiedorder_url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
           String xmlStr = httpUtils.post(unifiedorder_url, xml);
           System.out.println("xmlStr============="+xmlStr);
           String prepay_id = "";
           if (xmlStr.indexOf("SUCCESS") != -1) {
           　　Map<String, String> map = WXPayUtil.xmlToMap(xmlStr);
              prepay_id = (String) map.get("prepay_id");
           }
           payMap.put("appId", account.getAccountAppid());
           payMap.put("timeStamp", WXPayUtil.getCurrentTimestamp() + "");
           payMap.put("nonceStr", WXPayUtil.generateNonceStr());
           payMap.put("package", "prepay_id=" + prepay_id);
           payMap.put("signType", "MD5");
           String paySign = WXPayUtil.generateSignature(payMap, account.getPayKey());
           payMap.put("paySign", paySign);
       } catch (Exception e) {
           payMap.put("ret", InterConstant.RET_WX);
           payMap.put("appid", WsUtils.getAccount().getAccountAppid());
           e.printStackTrace();
       }
           return payMap;
       }
 　　}
 }