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

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。

修改二、HttpService.cs

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。

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)

<%@ 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。

JsApiPayPage.aspx(这个页面用来提交支付请求)

<%@ 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>

ResultNotifyPage.aspx(回调)

<%@ 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>

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