微信支付.net官方坑太多，我们来精简

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。

修改一、Config.cs

  1 namespace an.wxapi
  2 {
  3     public class WxPayConfig
  4     {
  5 
  6         public static string AppKey(string key)
  7         {
  8             return System.Configuration.ConfigurationManager.AppSettings[key];
  9         }
 10 
 11         /// <summary>
 12         /// APPID：绑定支付的APPID（必须配置）
 13         /// </summary>        
 14         public static string APPID {
 15             get
 16             {
 17                 return AppKey("wx_appid");
 18             }
 19         }
 20 
 21         /// <summary>
 22         /// KEY：商户支付密钥，参考开户邮件设置（必须配置）
 23         /// </summary>        
 24         public static string KEY
 25         {
 26             get {
 27                 return AppKey("wx_key");
 28             }
 29         }
 30         /// <summary>
 31         /// 商户号（必须配置）
 32         /// </summary>        
 33         public static string MCHID
 34         {
 35             get {
 36                 return AppKey("wx_mchid");
 37             }
 38         }
 39         /// <summary>
 40         /// APPSECRET：公众帐号secert（仅JSAPI支付的时候需要配置）
 41         /// </summary>        
 42         public static string APPSECRET
 43         {
 44             get {
 45                 return AppKey("wx_appsecret");
 46             }
 47         }
 48         /// <summary>
 49         /// 证书路径,注意应该填写绝对路径（仅退款、撤销订单时需要）
 50         /// </summary>        
 51         public static string SSLCERT_PATH
 52         {
 53             get
 54             {
 55                 return AppKey("wx_sslcert_path");
 56             }
 57         }
 58         /// <summary>
 59         /// 证书密码，默认商户号为密码
 60         /// </summary>
 61         public static string SSLCERT_PASSWORD
 62         {
 63             get
 64             {
 65                 return AppKey("wx_sslcert_password");
 66             }
 67         }
 68 
 69         /// <summary>
 70         ///  支付结果通知回调url，用于商户接收支付结果
 71         /// </summary>        
 72         public static string NOTIFY_URL
 73         {
 74             get
 75             {
 76                 return AppKey("wx_notify_url");
 77             }
 78         }
 79 
 80         /// <summary>
 81         /// 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
 82         /// </summary>
 83         public static string IP = "8.8.8.8";
 84         
 85         /// <summary>
 86         /// 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） 
 87         /// </summary>
 88         public static string PROXY_URL = "http://10.152.18.220:8080";
 89 
 90         /// <summary>
 91         ///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 
 92         /// </summary>
 93         public static int REPORT_LEVENL = 1;
 94        
 95         /// <summary>
 96         /// 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 
 97         /// </summary>
 98         
 99         public static int LOG_LEVENL
100         {
101             get
102             {
103                 string log_levenl = "0";
104                 if(AppKey("log_leven")!="")
105                 {
106                     log_levenl = AppKey("log_leven");
107                 }
108                 return Convert.ToInt32(log_levenl);
109             }
110         }
111 
112     }
113 }

只是把静态的替换成可以从web.config里面调用的。

修改二、HttpService.cs

  1 namespace an.wxapi
  2 {
  3     /// <summary>
  4     /// http连接基础类，负责底层的http通信
  5     /// </summary>
  6     public class HttpService
  7     {
  8 
  9         public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
 10         {
 11             //直接确认，否则打不开    
 12             return true;
 13         }
 14 
 15         public static string Post(string xml, string url, bool isUseCert, int timeout)
 16         {
 17             System.GC.Collect();//垃圾回收，回收没有正常关闭的http连接
 18 
 19             string result = "";//返回结果
 20 
 21             HttpWebRequest request = null;
 22             HttpWebResponse response = null;
 23             Stream reqStream = null;
 24 
 25             try
 26             {
 27                 //设置最大连接数
 28                 ServicePointManager.DefaultConnectionLimit = 200;
 29                 //设置https验证方式
 30                 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
 31                 {
 32                     ServicePointManager.ServerCertificateValidationCallback =
 33                             new RemoteCertificateValidationCallback(CheckValidationResult);
 34                 }
 35 
 36                 /***************************************************************
 37                 * 下面设置HttpWebRequest的相关属性
 38                 * ************************************************************/
 39                 request = (HttpWebRequest)WebRequest.Create(url);
 40 
 41                 request.Method = "POST";
 42                 request.Timeout = timeout * 1000;
 43 
 44                 //设置代理服务器
 45                 //WebProxy proxy = new WebProxy();                          //定义一个网关对象
 46                 //proxy.Address = new Uri(WxPayConfig.PROXY_URL);              //网关服务器端口:端口
 47                 //request.Proxy = proxy;
 48 
 49                 //设置POST的数据类型和长度
 50                 request.ContentType = "text/xml";
 51                 byte[] data = System.Text.Encoding.UTF8.GetBytes(xml);
 52                 request.ContentLength = data.Length;
 53 
 54                 //是否使用证书
 55                 if (isUseCert)
 56                 {
 57                     string path = HttpContext.Current.Request.PhysicalApplicationPath;
 58                     X509Certificate2 cert = new X509Certificate2(path + WxPayConfig.SSLCERT_PATH, WxPayConfig.SSLCERT_PASSWORD);
 59                     request.ClientCertificates.Add(cert);
 60                     Log.Debug("WxPayApi", "PostXml used cert");
 61                 }
 62 
 63                 //往服务器写入数据
 64                 reqStream = request.GetRequestStream();
 65                 reqStream.Write(data, 0, data.Length);
 66                 reqStream.Close();
 67 
 68                 //获取服务端返回
 69                 response = (HttpWebResponse)request.GetResponse();
 70 
 71                 //获取服务端返回数据
 72                 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
 73                 result = sr.ReadToEnd().Trim();
 74                 sr.Close();
 75             }
 76             catch (System.Threading.ThreadAbortException e)
 77             {
 78                 Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
 79                 Log.Error("Exception message: {0}", e.Message);
 80                 System.Threading.Thread.ResetAbort();
 81             }
 82             catch (WebException e)
 83             {
 84                 Log.Error("HttpService", e.ToString());
 85                 if (e.Status == WebExceptionStatus.ProtocolError)
 86                 {
 87                     Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
 88                     Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
 89                 }
 90                 throw new WxPayException(e.ToString());
 91             }
 92             catch (Exception e)
 93             {
 94                 Log.Error("HttpService", e.ToString());
 95                 throw new WxPayException(e.ToString());
 96             }
 97             finally
 98             {
 99                 //关闭连接和流
100                 if (response != null)
101                 {
102                     response.Close();
103                 }
104                 if (request != null)
105                 {
106                     request.Abort();
107                 }
108             }
109             return result;
110         }
111 
112         /// <summary>
113         /// 处理http GET请求，返回数据
114         /// </summary>
115         /// <param name="url">请求的url地址</param>
116         /// <returns>http GET成功后返回的数据，失败抛WebException异常</returns>
117         public static string Get(string url)
118         {
119             System.GC.Collect();
120             string result = "";
121 
122             HttpWebRequest request = null;
123             HttpWebResponse response = null;
124 
125             //请求url以获取数据
126             try
127             {
128                 //设置最大连接数
129                 ServicePointManager.DefaultConnectionLimit = 200;
130                 //设置https验证方式
131                 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
132                 {
133                     ServicePointManager.ServerCertificateValidationCallback =
134                             new RemoteCertificateValidationCallback(CheckValidationResult);
135                 }
136 
137                 /***************************************************************
138                 * 下面设置HttpWebRequest的相关属性
139                 * ************************************************************/
140                 request = (HttpWebRequest)WebRequest.Create(url);
141 
142                 request.Method = "GET";
143 
144                 //设置代理
145                 //WebProxy proxy = new WebProxy();
146                 //proxy.Address = new Uri(WxPayConfig.PROXY_URL);
147                 //request.Proxy = proxy;
148 
149                 //获取服务器返回
150                 response = (HttpWebResponse)request.GetResponse();
151 
152                 //获取HTTP返回数据
153                 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
154                 result = sr.ReadToEnd().Trim();
155                 sr.Close();
156             }
157             catch (System.Threading.ThreadAbortException e)
158             {
159                 Log.Error("HttpService", "Thread - caught ThreadAbortException - resetting.");
160                 Log.Error("Exception message: {0}", e.Message);
161                 System.Threading.Thread.ResetAbort();
162             }
163             catch (WebException e)
164             {
165                 Log.Error("HttpService", e.ToString());
166                 if (e.Status == WebExceptionStatus.ProtocolError)
167                 {
168                     Log.Error("HttpService", "StatusCode : " + ((HttpWebResponse)e.Response).StatusCode);
169                     Log.Error("HttpService", "StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription);
170                 }
171                 throw new WxPayException(e.ToString());
172             }
173             catch (Exception e)
174             {
175                 Log.Error("HttpService", e.ToString());
176                 throw new WxPayException(e.ToString());
177             }
178             finally
179             {
180                 //关闭连接和流
181                 if (response != null)
182                 {
183                     response.Close();
184                 }
185                 if (request != null)
186                 {
187                     request.Abort();
188                 }
189             }
190             return result;
191         }
192     }
193 }

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。

前台页面，我只用了三个（JsApiPayPage.aspx,ProductPage.aspx,ResultNotifyPage.aspx）

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)

ProductPage.aspx(主要获取用户的openid和access_token)

 1 <%@ Page Language="C#" Inherits="an.web" %>
 2 <%@ Import Namespace="an.wxapi" %>
 3 <script runat="server">
 4     protected override void OnLoad(EventArgs e)
 5     {
 6         JsApiPay jsApiPay = new JsApiPay(this);
 7         jsApiPay.GetOpenidAndAccessToken();        
 8         wx_openid = jsApiPay.openid;
 9     }
10 </script>
11 <!DOCTYPE html>
12 <html xmlns="http://www.w3.org/1999/xhtml">
13 <head>
14 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
15     <title></title>
16 </head>
17 <body>
18        <h2>商品一：价格为：1分</h2>
19        <p><a href="JsApiPayPage.aspx?openid=<%=wx_openid %>&total_fee=1&showwxpaytitle=1">去支付</a></p>
20 </body>
21 </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。

 1 protected void Page_Load(object sender, EventArgs e)
 2         {
 3             Log.Info(this.GetType().ToString(), "page load");
 4             if (!IsPostBack)
 5             {
 6                 JsApiPay jsApiPay = new JsApiPay(this);
 7                 try
 8                 {
 9                     //调用【网页授权获取用户信息】接口获取用户的openid和access_token
10                     jsApiPay.GetOpenidAndAccessToken();
11 
12                     //获取收货地址js函数入口参数
13                     //wxEditAddrParam = jsApiPay.GetEditAddressParameters();
14                     ViewState["openid"] = jsApiPay.openid;
15                 }
16                 catch (Exception ex)
17                 {
18                     Response.Write("<span style='color:#FF0000;font-size:20px'>" + "页面加载出错，请重试" +ex.Message +"</span>");
19                     //Button1.Visible = false;
20                     //Button2.Visible = false;
21                     //Label1.Visible = false;
22                     //Label2.Visible = false;
23                 }
24             }
25         }

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：

1 namespace an
2 {
3     public class web : System.Web.UI.Page
4     {
5         public string wx_openid { get; set; }
6         public string wxJsApiParam { get; set; }
7     }
8 }

直接在an.web里面定义下属性，不完啦。

JsApiPayPage.aspx(这个页面用来提交支付请求)

 1 <%@ Page Language="C#" Inherits="an.web" %>
 2 <%@ Import Namespace="an.wxapi" %>
 3 <script runat="server">
 4     protected override void OnLoad(EventArgs e)
 5     {
 6         string openid = Request.QueryString["openid"];
 7         string total_fee = Request.QueryString["total_fee"];
 8 
 9         JsApiPay jsApiPay = new JsApiPay(this);
10         jsApiPay.openid = openid;
11         jsApiPay.total_fee = int.Parse(total_fee);
12 
13         WxPayData unifiedOrderResult = jsApiPay.GetUnifiedOrderResult();
14         wxJsApiParam = jsApiPay.GetJsApiParameters();//获取H5调起JS API参数                    
15     }
16 </script>
17 <!DOCTYPE html>
18 <html xmlns="http://www.w3.org/1999/xhtml">
19 <head>
20     <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
21     <meta name="viewport" content="width=device-width, initial-scale=1"/> 
22     <title>微信支付样例-JSAPI支付</title>
23 </head>
24 
25            <script type="text/javascript">
26 
27                //调用微信JS api 支付
28                function jsApiCall()
29                {
30                    WeixinJSBridge.invoke(
31                    'getBrandWCPayRequest',
32                    <%=wxJsApiParam%>,//josn串
33                     function (res)
34                     {
35                         WeixinJSBridge.log(res.err_msg);
36                         alert(res.err_code + res.err_desc + res.err_msg);
37                     }
38                     );
39                }
40 
41                function callpay()
42                {
43                    if (typeof WeixinJSBridge == "undefined")
44                    {
45                        if (document.addEventListener)
46                        {
47                            document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);
48                        }
49                        else if (document.attachEvent)
50                        {
51                            document.attachEvent('WeixinJSBridgeReady', jsApiCall);
52                            document.attachEvent('onWeixinJSBridgeReady', jsApiCall);
53                        }
54                    }
55                    else
56                    {
57                        jsApiCall();
58                    }
59                }
60                
61      </script>
62 
63 <body>    
64     <input type="button" onclick="callpay()" value="立刻支付" />                
65 </body>
66 </html>

ResultNotifyPage.aspx(回调)

 1 <%@ Page Language="C#" Inherits="an.web" %>
 2 <%@ Import Namespace="an.wxapi" %>
 3 <script runat="server">
 4     protected override void OnLoad(EventArgs e)
 5     {
 6         ResultNotify resultNotify = new ResultNotify(this);
 7         resultNotify.ProcessNotify();
 8     }
 9 </script>
10 <!DOCTYPE html>
11 <html xmlns="http://www.w3.org/1999/xhtml">
12 <head>
13 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
14     <title></title>
15 </head>
16 <body>
17 
18 </body>
19 </html>

很简单咯...

an.wxapi.dll 下载地址：http://files.cnblogs.com/files/ancms/an.wxapi.rar

本人很菜，希望以微薄之力帮助大家。

再次感谢：smallerpig