微信生成带参数的二维码代码,C#代码库,德仔网

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【C#】微信生成带参数的二维码
作者:振峰 / 发布于2017/11/9/ 843
微信生成带参数的二维码
using System;  
using System.Collections.Generic;  
using System.IO;  
using System.Linq;  
using System.Net;  
using System.Text;  
using System.Web;  
using LitJson;  
  
/// <summary>  
/// Ticket 的摘要说明  
/// </summary>  
public class Ticket  
{  
    public Ticket()  
    {  
        //  
        // TODO: 在此处添加构造函数逻辑  
        //  
    }  
    public static  string GetewmPic( string scene_id)  
    {  
        string tocket = "";  
        string pic="";  
        if (Config.GetInstance().SystemSetting.Appid!=""&&Config.GetInstance().SystemSetting.seconid!="")  
        {  
  
            string appid = Config.GetInstance().SystemSetting.Appid;// "wx5955bd71e310a7b5";  
            string secret = Config.GetInstance().SystemSetting.seconid;// "2d6b6ec95cde8bc2908713bde4c92434";  
            string parm = "grant_type=client_credential&appid=" + appid + "&secret=" + secret + "";//2d6b6ec95cde8bc2908713bde4c92434  
            string url = "https://api.weixin.qq.com/cgi-bin/token";  
            string b = webRequestGet(url, parm);  
            b = SubString1(b, "{\"access_token\":\"", "\",\"expires_in\":7200}");//acc_tonke  
  
            
            string poster = "{\"action_name\": \"QR_LIMIT_SCENE\",\"action_info\": {\"scene\": { \"scene_id\": "+scene_id+" } }";//二维码永久请求格式  
  
            string tockes = GetPage("https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" + b + "", poster + "");  
            if(tockes.IndexOf("ticket")>-1)  
            {  
                JsonData bejson = JsonMapper.ToObject(tockes);  
                tocket =(String)bejson["ticket"];  
                tocket = Uri.EscapeDataString(tocket);//TICKET必需UrlEncode  
            }  
             
             
            string Picurl = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket="+tocket+"";  
             
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(Picurl);  
            req.Proxy = null;  
            req.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0) Gecko/20100101 Firefox/11.0";  
            req.Headers.Add("Accept-Language", "zh-cn,en-us;q=0.8,zh-hk;q=0.6,ja;q=0.4,zh;q=0.2");  
            req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";  
            ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };  
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;  
            //HttpWebResponse myResponse = (HttpWebResponse)req.GetResponse();  
             
            System.Drawing.Image img = System.Drawing.Image.FromStream(req.GetResponse().GetResponseStream());  
            string newfilename = "ewm_" + scene_id + ".jpg";//二维码图片路径  
           // string filepath = @"D:\网站项目\wsl\ewmPic\" + newfilename;  
            string address = HttpContext.Current.Server.MapPath(SysConfig.ApplicationPath+"/ewmPic/"+newfilename);  
            img.Save(address);  
  
            pic = newfilename;  
        }  
        return pic;  
          
          
    }  
  
  
    public static string SubString1(string sourceStr, string beginStr, string endStr)  
    {  
        int begin = sourceStr.IndexOf(beginStr);  
        if (begin == -1) return "";  
        int end = sourceStr.IndexOf(endStr, begin + beginStr.Length);  
        if (end == -1 && end == begin + beginStr.Length) return "";  
  
        return sourceStr.Substring(begin + beginStr.Length, end - begin - beginStr.Length);  
  
    }  
    /// <summary>  
    /// GET 提交调用抓取  
    /// </summary>  
    /// <param name="url">提交地址</param>  
    /// <param name="param">参数</param>  
    /// <returns>string</returns>  
    public static string webRequestGet(string url, string param)  
    {  
        byte[] bs = System.Text.Encoding.UTF8.GetBytes(param);  
  
        HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url + "?" + param);  
        req.Method = "GET";  
        using (WebResponse wr = req.GetResponse())  
        {  
            //在这里对接收到的页面内容进行处理   
  
            Stream strm = wr.GetResponseStream();  
  
            StreamReader sr = new StreamReader(strm, System.Text.Encoding.UTF8);  
  
            string line;  
  
            System.Text.StringBuilder sb = new System.Text.StringBuilder();  
  
            while ((line = sr.ReadLine()) != null)  
            {  
                sb.Append(line);  
            }  
            sr.Close();  
            strm.Close();  
            return sb.ToString();  
        }  
    }  
    public static string GetPage(string posturl, string postData)  
    {  
        Stream outstream = null;  
        Stream instream = null;  
        StreamReader sr = null;  
        HttpWebResponse response = null;  
        HttpWebRequest request = null;  
        Encoding encoding = Encoding.UTF8;  
        byte[] data = encoding.GetBytes(postData);  
        // 准备请求...  
        try  
        {  
            // 设置参数  
            request = WebRequest.Create(posturl) as HttpWebRequest;  
            CookieContainer cookieContainer = new CookieContainer();  
            request.CookieContainer = cookieContainer;  
            request.AllowAutoRedirect = true;  
            request.Method = "POST";  
            request.ContentType = "application/x-www-form-urlencoded";  
            request.ContentLength = data.Length;  
            outstream = request.GetRequestStream();  
            outstream.Write(data, 0, data.Length);  
            outstream.Close();  
            //发送请求并获取相应回应数据  
            response = request.GetResponse() as HttpWebResponse;  
            //直到request.GetResponse()程序才开始向目标网页发送Post请求  
            instream = response.GetResponseStream();  
            sr = new StreamReader(instream, encoding);  
            //返回结果网页（html）代码  
            string content = sr.ReadToEnd();  
            string err = string.Empty;  
            return content;  
        }  
        catch (Exception ex)  
        {  
            string err = ex.Message;  
            return string.Empty;  
        }  
    }  
  
}
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