步骤一：首先得开通公众号（目的是 获得appid、AppSecret、设置安全域名）~
【公众号设置】→【功能设置】 设置相应的域名
步骤二：编写帮助类WeixinLuyinHelper中的代码
#region 请求Url，不发送数据
/// <summary>/// 请求Url，不发送数据/// </summary>public static string RequestUrl(string url){ return RequestUrl(url, "POST");}#endregion #region 请求Url，不发送数据/// <summary>/// 请求Url，不发送数据/// </summary>public static string RequestUrl(string url, string method){ // 设置参数HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;CookieContainer cookieContainer = new CookieContainer();request.CookieContainer = cookieContainer;request.AllowAutoRedirect = true;request.Method = method;request.ContentType = "text/html";request.Headers.Add("charset", "utf-8");//发送请求并获取相应回应数据
HttpWebResponse response = request.GetResponse() as HttpWebResponse;//直到request.GetResponse()程序才开始向目标网页发送Post请求Stream responseStream = response.GetResponseStream();StreamReader sr = new StreamReader(responseStream, Encoding.UTF8);//返回结果网页（html）代码string content = sr.ReadToEnd();return content;}#endregion
#region 获取Json字符串某节点的值
/// <summary>/// 获取Json字符串某节点的值/// </summary>public static string GetJsonValue(string jsonStr, string key){ string result = string.Empty;if (!string.IsNullOrEmpty(jsonStr)){ key = "\"" + key.Trim('"') + "\"";int index = jsonStr.IndexOf(key) + key.Length + 1;if (index > key.Length + 1){ //先截逗号，若是最后一个，截“｝”号，取最小值int end = jsonStr.IndexOf(',', index);if (end == -1){ end = jsonStr.IndexOf('}', index);}result = jsonStr.Substring(index, end - index);
result = result.Trim(new char[] { '"', ' ', '\'' }); //过滤引号或空格}}return result;}#endregion
#region获取access_token
/// <summary>/// 获取Token/// </summary>public static string GetToken(string appid, string secret){ string strJson = RequestUrl(string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", appid, secret));return GetJsonValue(strJson, "access_token");}#endregion
#region 获取jsapi_ticket
/// <summary>/// 获取Token/// </summary>public static string Getjsapi_ticketToken(string access_token){ string strJson = RequestUrl(string.Format("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={0}&type=jsapi", access_token));return GetJsonValue(strJson, "ticket");}#endregion
#region 生成签名
public static SignatureModel GetSignature(string jsapi_ticket){ var timestamp = GetTimeStamp();var noncestr = new Random().Next(10000).ToString();var uri = "http://m.wanwushuo.com/Home/WeixinLuyin";string oldstr = "jsapi_ticket=" + jsapi_ticket + "&noncestr=" + noncestr + "×tamp=" + timestamp + "&url=" + uri;byte[] cleanBytes = Encoding.UTF8.GetBytes(oldstr);
byte[] hashedBytes = System.Security.Cryptography.SHA1.Create().ComputeHash(cleanBytes);string newstr= BitConverter.ToString(hashedBytes).Replace("-", "");
SignatureModel SignatureModel = new SignatureModel();SignatureModel.noncestr=noncestr;SignatureModel.Signature=newstr;SignatureModel.timestamp=timestamp;return SignatureModel;}#endregion
步骤三：调用上面方法即可（根据第一步上面获得的appid、AppSecret 获取access_token、jsapi_ticket 生成Signature签名）
string AppID = "999999999";
string AppSecret = "8888888888";获取access_token
string access_token = WeixinLuyinHelper.GetToken(AppID, AppSecret);//获取jsapi_ticket
string jsapi_ticket = WeixinLuyinHelper.Getjsapi_ticketToken(access_token);
生成Signature签名
SignatureModel SignatureModel = WeixinLuyinHelper.GetSignature(jsapi_ticket);
应用：接下来就比较简单了 拿到签名Signature 可用于微信分享、语音识别、微信扫一扫、摇一摇等
下面以微信分享为例：
页面
<html>
<head><meta name="viewport" content="width=device-width" /><title>WeixinLuyin</title></head><body><div></div><script src="~/Scripts/jquery.js"></script>
<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script><script type="text/javascript">//配置config appid signature等刚才已经获得了 传到这边即可wx.config({
debug: true, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。appId: "@Model.AppID", // 必填，公众号的唯一标识timestamp:"@Model.timestamp" , // 必填，生成签名的时间戳nonceStr: "@Model.noncestr", // 必填，生成签名的随机串signature: "@Model.Signature",// 必填，签名，见附录1jsApiList: ["onMenuShareTimeline"] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2（此处填写了分享的接口）});wx.ready(function () {
//在这里调用分享接口
wx.onMenuShareTimeline({
title: '', // 分享标题
link: '', // 分享链接
imgUrl: '', // 分享图标
success: function () {
// 用户确认分享后执行的回调函数
},
cancel: function () {
// 用户取消分享后执行的回调函数
}
});
});
</script>
</body></html>
OVER 本文到这里介绍 内容简单 给没接触或刚接触微信公众号开发的鲜肉看看 大神绕行 有问题请留言
