微信公众号支付（MVC版本）


            一、获取微信支付 MCHID,KEY,APPID,APPSecret 四个支付关键值.

微信支付商户平台 http://pay.weixin.qq.com/index.php/core/home/login?return_url=%2F

  　 1.登录微信支付商户平台获取到商户号(MCHID),

  　 2.在"账号中心"栏目下"API安全"栏目里设置API密钥(KEY)

微信公众号： http://mp.weixin.qq.com/

     1.登录微信公众在"基本配置"栏获取应用ID(APPID)和应用密钥(APPSecret)

     2.在"接口权限"栏目下"网页账号"绑定正式支付的域名 (如:××××.net,不要http:和"/"斜杠)

     3.在"微信支付"栏目下"开发配置"里面设置公众支付的支付授权目录(如:××××.net/WeChatWeb/) 

二、把WxPayAPI添加到制作项目中,在Config.cs文件里修改获取到的MCHID,KEY,APPID,APPSecret四个关键值以及NOTIFY_URL值(NOTIFY_URL是支付授权目录),并在MVC项目里建一个WeChatWeb控制器,里面加上逻辑代码.并传递微信jsapi支付所需的参数.代码示例如下:

后台Action代码







  /// <summary>

  /// 获取微信支付相关信息

  /// </summary>

  /// <returns></returns>

  [HttpGet]

  public virtual ActionResult Index()

  {

   JsApiPay jsApiPay = new JsApiPay();

   OStudent model = null;

   try

   {

    //调用【网页授权获取用户信息】接口获取用户的openid和access_token

    jsApiPay.GetOpenidAndAccessToken();

    //获取微信支付者公共id

    jsApiPay.openid = jsApiPay.openid;



    string ID = Request["ID"]; //如果要获取页面传递过来的值,需修改GetOpenidAndAccessToken()方法里面的代码,加上Request.Url.Query获取参数

    model = OStudentSiteService.GetByKey(id).AppendData as OStudent;

    if (model != null)

    {

     jsApiPay.total_fee = 1;//测试 订单金额(1表示分,正式金额要*100)

     jsApiPay.Order_ID = model.order_ID; //订单号(自己定义订单号)     

    }



    //JSAPI支付预处理

    //调用统一下单，获得下单结果

    WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult();

    //从统一下单成功返回的数据中获取微信浏览器调起jsapi支付所需的参数

    var wxJsApiParam = jsApiPay.GetJsApiParameters(); //获取到的是json格式字符串

    ViewBag.wxJsApiParam = wxJsApiParam; //前台页面js调用

    Log.Debug(this.GetType().ToString(), "wxJsApiParam : " + wxJsApiParam);

   }

   catch (Exception ex)

   {

    Response.Write(ex.Message + "," + ex.Source);

    Response.End();

   }

   return View(model);

  }

  

  //修改支付方式

  [HttpPost]

  public virtual JsonResult PayMethod()

  {

   AjaxJsonResult ajax = new AjaxJsonResult() { err = true, msg = string.Empty, timeout = 3 };

   string id = Request.Form["id"];

   string payMethod = Request.Form["payMethod"];

   var model = (Project.Core.Models.Model.OStudent)OStudentSiteService.GetByKey(id).AppendData;

   model.payMethod = payMethod; //支付方式

   OperationResult result = OStudentSiteService.Modify(model);

   if (result.ResultType == OperationResultType.Success)

   {

    ajax.err = false;

    ajax.msg = "操作成功";

   }

   return Json(ajax);

  }





  /// <summary>

  /// 修改支付状态

  /// </summary>

  /// <param name="userID"></param>

  /// <returns></returns>

  [HttpPost]

  public virtual string EditPayStatus(Guid userID)

  {

   string msg = "error";

   var model = OStudentSiteService.GetByKey(userID).AppendData as OStudent;

   model.Status = (int)X.Project.Site.Models.Enum.PayStatus.Success; //付款成功

   OperationResult result = OStudentSiteService.Modify(model);

   if (result.ResultType == OperationResultType.Success)

   {

    msg = "ok";    

   }

   return msg;

  }

  

  前台Index.chtml视图页面JS代码

 

  <script type="text/javascript">

  var _wxJsApiParam = eval('(@Html.Raw(ViewBag.wxJsApiParam))');



  function callpay() {

   //选择支付方式

   var payMethod = $("input[name='PayMethod']:checked").val();

   if (payMethod == "" || payMethod == null) {

    layer.msg("请选择支付方式", function () { })

    return false;

   }



   $.ajax({

    type: "POST",

    dataType: "JSON",

    url: '@Url.Action("PayMethod", "WeChatWeb")',

    data: {

     payMethod: payMethod,

     id: '@Model.ID'

    },

    success: function (data) {

     //表示修改支付方式成功

     if (!data.err) {



      //1表示微信支付,则调用微信支付

      if (payMethod == "1") {

       if (typeof WeixinJSBridge == "undefined") {

        if (document.addEventListener) {

         document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);

        }

        else if (document.attachEvent) {

         document.attachEvent('WeixinJSBridgeReady', jsApiCall);

         document.attachEvent('onWeixinJSBridgeReady', jsApiCall);

        }

       }

       else {

        jsApiCall();

       }

      } else if (payMethod == "2") {

       layer.alert('恭喜您,操作成功!', function () {

         window.location.href = "@Url.Action(MVC.Default.Index())" ; //操作成功后的跳转页面

       });

      }



    } else {

     layer.msg("操作失败", function () { })

     return false;

    }

    }

   });

 }



 //调用微信JS api 支付

 function jsApiCall() {

  WeixinJSBridge.invoke('getBrandWCPayRequest', _wxJsApiParam,

    function (res) {

     if (res.err_msg == "get_brand_wcpay_request:cancel") {

 

      layer.msg("已取消支付", function () { });

      return false;

     } else if (res.err_msg == "get_brand_wcpay_request:ok") {

      //支付成功

      //ajax

      $.ajax({

       type: "POST",

       dataType: "text",

       url: '@Url.Action("EditPayStatus", "WeChatWeb")',

       data: {

        userID: '@Model.ID'

       },

       error: function (request) {

 

        layer.msg("服务器错误！", function () { });

        return false;

       },

       success: function (data) {

        window.location.href = "@Url.Action(MVC.Default.Index())"; //支付成功后跳转的页面

       }

      }); //ajax end

      }

    });

   }  

</script>









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