/// <summary>
/// 获取微信分享接口信息
/// </summary>
private void GetWxApiInfo()
{
string appId = ""; //微信分享APPID
string secret = ""; //公众号的应用秘钥
string timestamp = string.Empty; //生成签名的时间戳
string nonceStr = string.Empty; //必填，生成签名的随机串
string signature = string.Empty;//必填，签名
string strImg = string.Empty; //分享图片logo
string strDesc = string.Empty; //微信分享描述信息
string pageurl = string.Empty; //分享链接
//生成签名的时间戳
TimeSpan ts = DateTime.Now - DateTime.Parse("1970-01-01 00:00:00");
timestamp = ts.TotalSeconds.ToString().Split('.')[0];
//生成签名的随机串
nonceStr = GetRandomString(16, true, true, true, false, "win");
string token = string.Empty;
//if (string.IsNullOrWhiteSpace(token))
//{
// //微信access_token，用于获取微信jsapi_ticket
// token = GetAccess_token(appId, secret);
// ICore.ICaching.SetCaching("token", token, 60);
//}
//微信jsapi_ticket
string ticket = ICore.ICaching.GetCaching("ticket");
//ticket = null;
if(string.IsNullOrWhiteSpace(ticket))
{
//微信access_token，用于获取微信jsapi_ticket
token = GetAccess_token(appId, secret);
//微信jsapi_ticket
ticket = GetTicket(token);
ICore.ICaching.SetCaching("ticket", ticket, 60);
}
//对所有待签名参数按照字段名的ASCII 码从小到大排序（字典序）后，使用URL键值对的格式（即key1=value1&key2=value2…）拼接成字符串
string str = "jsapi_ticket=" + ticket + "&noncestr=" + nonceStr + "×tamp=" + timestamp + "&url=" + pageurl;
//签名,使用SHA1生成
signature = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "SHA1").ToLower();
}
///<summary>
///生成随机字符串
///</summary>
///<param name="length">目标字符串的长度</param>
///<param name="useNum">是否包含数字，1=包含，默认为包含</param>
///<param name="useLow">是否包含小写字母，1=包含，默认为包含</param>
///<param name="useUpp">是否包含大写字母，1=包含，默认为包含</param>
///<param name="useSpe">是否包含特殊字符，1=包含，默认为不包含</param>
///<param name="custom">要包含的自定义字符，直接输入要包含的字符列表</param>
///<returns>指定长度的随机字符串</returns>
public string GetRandomString(int length, bool useNum, bool useLow, bool useUpp, bool useSpe, string custom)
{
byte[] b = new byte[4];
new System.Security.Cryptography.RNGCryptoServiceProvider().GetBytes(b);
Random r = new Random(BitConverter.ToInt32(b, 0));
string s = null, str = custom;
if (useNum == true) { str += "0123456789"; }
if (useLow == true) { str += "abcdefghijklmnopqrstuvwxyz"; }
if (useUpp == true) { str += "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; }
if (useSpe == true) { str += "!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~"; }
for (int i = 0; i < length; i++)
{
s += str.Substring(r.Next(0, str.Length - 1), 1);
}
return s;
}
/// <summary>
/// 获取微信jsapi_ticket
/// </summary>
/// <param name="token">access_token</param>
/// <returns>jsapi_ticket</returns>
public string GetTicket(string token)
{
string ticketUrl = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + token + "&type=jsapi";
string jsonresult = HttpGet(ticketUrl, "UTF-8");
WX_Ticket wxTicket = JsonDeserialize<WX_Ticket>(jsonresult);
return wxTicket.ticket;
}
/// <summary>
/// 获取微信access_token
/// </summary>
/// <param name="appid">公众号的应用ID</param>
/// <param name="secret">公众号的应用密钥</param>
/// <returns>access_token</returns>
private string GetAccess_token(string appid, string secret)
{
string tokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;
string jsonresult = HttpGet(tokenUrl, "UTF-8");
WX_Token wx = JsonDeserialize<WX_Token>(jsonresult);
return wx.access_token;
}
/// <summary>
/// JSON反序列化
/// </summary>
/// <typeparam name="T">实体类</typeparam>
/// <param name="jsonString">JSON</param>
/// <returns>实体类</returns>
private T JsonDeserialize<T>(string jsonString)
{
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));
MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));
T obj = (T)ser.ReadObject(ms);
return obj;
}
/// <summary>
/// HttpGET请求
/// </summary>
/// <param name="url">请求地址</param>
/// <param name="encode">编码方式：GB2312/UTF-8</param>
/// <returns>字符串</returns>
private string HttpGet(string url, string encode)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "GET";
request.ContentType = "text/html;charset=" + encode;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream myResponseStream = response.GetResponseStream();
StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding(encode));
string retString = myStreamReader.ReadToEnd();
myStreamReader.Close();
myResponseStream.Close();
return retString;
}
/// <summary>
/// 通过微信API获取access_token得到的JSON反序列化后的实体
/// </summary>
public class WX_Token
{
public string access_token { get; set; }
public string expires_in { get; set; }
}
/// <summary>
/// 通过微信API获取jsapi_ticket得到的JSON反序列化后的实体
/// </summary>
public class WX_Ticket
{
public string errcode { get; set; }
public string errmsg { get; set; }
public string ticket { get; set; }
public string expires_in { get; set; }
}
前端页面：
需要引用js
<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.2.0.js"></script>
wx.config({
debug: false, // 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: '<%=appId%>', // 必填，公众号的唯一标识
timestamp: '<%=timestamp%>', // 必填，生成签名的时间戳
nonceStr: '<%=nonceStr%>', // 必填，生成签名的随机串
signature: '<%=signature%>', // 必填，签名
jsApiList: ['onMenuShareTimeline', 'onMenuShareAppMessage', 'onMenuShareQQ', 'onMenuShareWeibo']// 必填，需要使用的JS接口列表，所有JS接口列表见附录2
})
wx.ready(function () {
//分享到朋友圈
wx.onMenuShareTimeline({
title: '<%=title%>', // 分享标题
link: '<%=pageurl%>', // 分享链接
imgUrl: '<%=strImg%>', // 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
}
});
//分享给朋友
wx.onMenuShareAppMessage({
title: '<%=title%>', // 分享标题
desc: '<%=strDesc%>', // 分享描述
link: '<%=pageurl%>', // 分享链接
imgUrl: '<%=strImg%>', // 分享图标
type: '', // 分享类型,music、video或link，不填默认为link
dataUrl: '', // 如果type是music或video，则要提供数据链接，默认为空
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
}
});
//分享给QQ好友
wx.onMenuShareQQ({
title: '<%=title%>', // 分享标题
desc: '<%=strDesc%>', // 分享描述
link: '<%=pageurl%>', // 分享链接
imgUrl: '<%=strImg%>', // 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
}
});
//分享到腾讯微博
wx.onMenuShareWeibo({
title: '<%=title%>', // 分享标题
desc: '<%=strDesc%>', // 分享描述
link: '<%=pageurl%>', // 分享链接
imgUrl: '<%=strImg%>', // 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
}
});
});
注意事项：前台链接地址和后台加密的链接地址必须一样