asp.net 5.0微信支付

（原文出自：http://lib.csdn.net/article/wechat/46329）

微信支付官方坑太多，我们来精简

我把官方的代码，打包成了 an.wxapi.dll。

里面主要替换了下注释。呵呵。然后修改了几个地方。

namespace an.wxapi

{

    public class WxPayConfig

    {

        public static string AppKey(string key)

        {

            return System.Configuration.ConfigurationManager.AppSettings[key];

        }

        /// <summary>

        /// APPID：绑定支付的APPID（必须配置）

        /// </summary>

        public static string APPID {

            get

            {

                return AppKey("wx_appid");

            }

        }

        /// <summary>

        /// KEY：商户支付密钥，参考开户邮件设置（必须配置）

        /// </summary>

        public static string KEY

        {

            get {

                return AppKey("wx_key");

            }

        }

        /// <summary>

        /// 商户号（必须配置）

        /// </summary>

        public static string MCHID

        {

            get {

                return AppKey("wx_mchid");

            }

        }

        /// <summary>

        /// APPSECRET：公众帐号secert（仅JSAPI支付的时候需要配置）

        /// </summary>

        public static string APPSECRET

        {

            get {

                return AppKey("wx_appsecret");

            }

        }

        /// <summary>

        /// 证书路径,注意应该填写绝对路径（仅退款、撤销订单时需要）

        /// </summary>

        public static string SSLCERT_PATH

        {

            get

            {

                return AppKey("wx_sslcert_path");

            }

        }

        /// <summary>

        /// 证书密码，默认商户号为密码

        /// </summary>

        public static string SSLCERT_PASSWORD

        {

            get

            {

                return AppKey("wx_sslcert_password");

            }

        }

        /// <summary>

        ///  支付结果通知回调url，用于商户接收支付结果

        /// </summary>

        public static string NOTIFY_URL

        {

            get

            {

                return AppKey("wx_notify_url");

            }

        }

        /// <summary>

        /// 商户系统后台机器IP,此参数可手动配置也可在程序中自动获取

        /// </summary>

        public static string IP = "8.8.8.8";

        /// <summary>

        /// 代理服务器设置,默认IP和端口号分别为0.0.0.0和0，此时不开启代理（如有需要才设置）

        /// </summary>

        public static string PROXY_URL = "http://10.152.18.220:8080";

        /// <summary>

        ///上报信息配置，测速上报等级，0.关闭上报; 1.仅错误时上报; 2.全量上报

        /// </summary>

        public static int REPORT_LEVENL = 1;

        /// <summary>

        /// 日志等级，0.不输出日志；1.只输出错误信息; 2.输出错误和正常信息; 3.输出错误信息、正常信息和调试信息

        /// </summary>

        public static int LOG_LEVENL

        {

            get

            {

                string log_levenl = "0";

                if(AppKey("log_leven")!="")

                {

                    log_levenl = AppKey("log_leven");

                }

                return Convert.ToInt32(log_levenl);

            }

        }

    }

}

　　只是把静态的替换成可以从web.config里面调用的。

namespace an.wxapi

{

    /// <summary>

    /// http连接基础类，负责底层的http通信

    /// </summary>

    public class HttpService

    {

        public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)

        {

            //直接确认，否则打不开

            return true;

        }

        public static string Post(string xml, string url, bool isUseCert, int timeout)

        {

            System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接

            string result = "";//返回结果

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            Stream reqStream = null;

            try

            {

                //设置最大连接数

                ServicePointManager.DefaultConnectionLimit = 200;

                //设置https验证方式

                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))

                {

                    ServicePointManager.ServerCertificateValidationCallback =

                            new RemoteCertificateValidationCallback(CheckValidationResult);

                }

                /***************************************************************

                * 下面设置HttpWebRequest的相关属性

                * ************************************************************/

                request = (HttpWebRequest)WebRequest.Create(url);

                request.Method = "POST";

                request.Timeout = timeout * 1000;

                //设置代理服务器

                //WebProxy proxy = new WebProxy();                          //定义一个网关对象

                //proxy.Address = new Uri(WxPayConfig.PROXY_URL);              //网关服务器端口:端口

                //request.Proxy = proxy;

                //设置POST的数据类型和长度

                request.ContentType = "text/xml";

                byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);

                request.ContentLength = data.Length;

                //是否使用证书

                if (isUseCert)

                {

                    string path = HttpContext.Current.Request.PhysicalApplicationPath;

                    X509Certificate2 cert = new X509Certificate2(path + WxPayConfig.SSLCERT_PATH, WxPayConfig.SSLCERT_PASSWORD);

                    request.ClientCertificates.Add(cert);

                    Log.Debug("WxPayApi", "PostXml used cert");

                }

                //往服务器写入数据

                reqStream = request.GetRequestStream();

                reqStream.Write(data, 0, data.Length);

                reqStream.Close();

                //获取服务端返回

                response = (HttpWebResponse)request.GetResponse();

                //获取服务端返回数据

                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

                result = sr.ReadToEnd().Trim();

                sr.Close();

            }

            catch (System.Threading.ThreadAbortException e)

            {

                Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");

                Log.Error("Exception message: {0}", e.Message);

                System.Threading.Thread.ResetAbort();

            }

            catch (WebException e)

            {

                Log.Error("HttpService", e.ToString());

                if (e.Status == WebExceptionStatus.ProtocolError)

                {

                    Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);

                    Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);

                }

                throw new WxPayException(e.ToString());

            }

            catch (Exception e)

            {

                Log.Error("HttpService", e.ToString());

                throw new WxPayException(e.ToString());

            }

            finally

            {

                //关闭连接和流

                if (response != null)

                {

                    response.Close();

                }

                if (request != null)

                {

                    request.Abort();

                }

            }

            return result;

        }

        /// <summary>

        /// 处理http GET请求，返回数据

        /// </summary>

        /// <param name="url">请求的url地址</param>

        /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>

        public static string Get(string url)

        {

            System.GC.Collect();

            string result = "";

            HttpWebRequest request = null;

            HttpWebResponse response = null;

            //请求url以获取数据

            try

            {

                //设置最大连接数

                ServicePointManager.DefaultConnectionLimit = 200;

                //设置https验证方式

                if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))

                {

                    ServicePointManager.ServerCertificateValidationCallback =

                            new RemoteCertificateValidationCallback(CheckValidationResult);

                }

                /***************************************************************

                * 下面设置HttpWebRequest的相关属性

                * ************************************************************/

                request = (HttpWebRequest)WebRequest.Create(url);

                request.Method = "GET";

                //设置代理

                //WebProxy proxy = new WebProxy();

                //proxy.Address = new Uri(WxPayConfig.PROXY_URL);

                //request.Proxy = proxy;

                //获取服务器返回

                response = (HttpWebResponse)request.GetResponse();

                //获取HTTP返回数据

                StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

                result = sr.ReadToEnd().Trim();

                sr.Close();

            }

            catch (System.Threading.ThreadAbortException e)

            {

                Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");

                Log.Error("Exception message: {0}", e.Message);

                System.Threading.Thread.ResetAbort();

            }

            catch (WebException e)

            {

                Log.Error("HttpService", e.ToString());

                if (e.Status == WebExceptionStatus.ProtocolError)

                {

                    Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);

                    Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);

                }

                throw new WxPayException(e.ToString());

            }

            catch (Exception e)

            {

                Log.Error("HttpService", e.ToString());

                throw new WxPayException(e.ToString());

            }

            finally

            {

                //关闭连接和流

                if (response != null)

                {

                    response.Close();

                }

                if (request != null)

                {

                    request.Abort();

                }

            }

            return result;

        }

    }

}

　　主要注释掉了设置代理服务器，基本上就注释掉这个就可以用了。

因为我只需要做微信里面的网页支付，其他很多功能我都不需要。所以。BIN文件夹，也只需要LitJSON.dll，RestSharp.dll,an.wxapi.dll(我上面打包的)

<%@ Page Language="C#" Inherits="an.web" %>

<%@ Import Namespace="an.wxapi" %>

<script runat="server">

    protected override void OnLoad(EventArgs e)

    {

        JsApiPay jsApiPay = new JsApiPay(this);

        jsApiPay.GetOpenidAndAccessToken();

        wx_openid = jsApiPay.openid;

    }

</script>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

    <title></title>

</head>

<body>

       <h2>商品一：价格为：1分</h2>

       <p><a href="JsApiPayPage.aspx?openid=<%=wx_openid %>&total_fee=1&showwxpaytitle=1">去支付</a></p>

</body>

</html>

我比较懒，所以，我一般不用.cs文件，我喜欢写到一起。呵呵,（这样有个好处，不需要编译，即可运行。）基本上是拿官方的过来，没怎么修改。

protected void Page_Load(object sender, EventArgs e)

        {

            Log.Info(this.GetType().ToString(), "page load");

            if (!IsPostBack)

            {

                JsApiPay jsApiPay = new JsApiPay(this);

                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();

                    //获取收货地址js函数入口参数

                    //wxEditAddrParam = jsApiPay.GetEditAddressParameters();

                    ViewState["openid"] = jsApiPay.openid;

                }

                catch (Exception ex)

                {

                    Response.Write("<span style='color:#FF0000;font-size:20px'>" + "页面加载出错，请重试" +ex.Message +"</span>");

                    //Button1.Visible = false;

                    //Button2.Visible = false;

                    //Label1.Visible = false;

                    //Label2.Visible = false;

                }

            }

        }

　　官方用的是ViewState这玩意，会产生庞大的垃圾代码，（反正我也不知道这玩意，有啥子用）我的做法是：

namespace an

{

    public class web : System.Web.UI.Page

    {

        public string wx_openid { get; set; }

        public string wxJsApiParam { get; set; }

    }

}

　　直接在an.web里面定义下属性，不完啦。

<%@ Page Language="C#" Inherits="an.web" %>

<%@ Import Namespace="an.wxapi" %>

<script runat="server">

    protected override void OnLoad(EventArgs e)

    {

        string openid = Request.QueryString["openid"];

        string total_fee = Request.QueryString["total_fee"];

        JsApiPay jsApiPay = new JsApiPay(this);

        jsApiPay.openid = openid;

        jsApiPay.total_fee = int.Parse(total_fee);

        WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult();

        wxJsApiParam = jsApiPay.GetJsApiParameters();//获取H5调起JS API参数

    }

</script>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

    <meta http-equiv="content-type" content="text/html;charset=utf-8"/>

    <meta name="viewport" content="width=device-width, initial-scale=1"/>

    <title>微信支付样例-JSAPI支付</title>

</head>

           <script type="text/javascript">

               //调用微信JS api 支付

               function jsApiCall()

               {

                   WeixinJSBridge.invoke(

                   'getBrandWCPayRequest',

                   <%=wxJsApiParam%>,//josn串

                    function (res)

                    {

                        WeixinJSBridge.log(res.err_msg);

                        alert(res.err_code + res.err_desc + res.err_msg);

                    }

                    );

               }

               function callpay()

               {

                   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();

                   }

               }

     </script>

<body>

    <input type="button" onclick="callpay()" value="立刻支付" />

</body>

</html>

<%@ Page Language="C#" Inherits="an.web" %>

<%@ Import Namespace="an.wxapi" %>

<script runat="server">

    protected override void OnLoad(EventArgs e)

    {

        ResultNotify resultNotify = new ResultNotify(this);

        resultNotify.ProcessNotify();

    }

</script>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

    <title></title>

</head>

<body>

</body>

</html>

巴特西

asp.net 5.0微信支付

微信支付官方坑太多，我们来精简

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