119 lines
4.7 KiB
C#
119 lines
4.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Web;
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using System.Web.UI;
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using System.Web.UI.WebControls;
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using ThoughtWorks.QRCode.Codec;
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public partial class SystemManage_openid : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!Page.IsPostBack)
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{
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string code = Request.QueryString["code"];
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string state = Request.QueryString["state"];
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if (!string.IsNullOrEmpty(code) && !string.IsNullOrEmpty(state))
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{
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string openid = GetOAuthOpenId(code);
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if (openid == "")
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{
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Response.Write("<h1>获取openid失败</h1>");
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Response.End();
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}
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ZWL.BLL.ERPUser bll = new ZWL.BLL.ERPUser();
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bool result = bll.Setopenid(state, openid);
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if (result)
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{
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Response.Write("<h1>绑定成功</h1>");
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Response.End();
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}
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else
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{
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Response.Write("<h1>绑定失败</h1>");
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Response.End();
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}
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}
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else
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{
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string id = Request.QueryString["ID"];
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if (string.IsNullOrEmpty(id))
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id = ZWL.Common.PublicMethod.GetSessionValue("UserID");
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if(id== "NoLogin")
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{
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Response.Write("请先登录");
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Response.End();
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}
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ZWL.BLL.ERPUser bll = new ZWL.BLL.ERPUser();
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string openid = bll.Getopenid(id);
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if (!string.IsNullOrEmpty(openid))
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lbl_pic.Text = "目前绑定：" + openid;
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//生成二维码
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//https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxb79cf945835c07e3&redirect_uri=http://dc.51csharp.com/SystemManage/openid.aspx&response_type=code&scope=snsapi_base&state=1&connect_redirect=1#wechat_redirect
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string url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxb79cf945835c07e3&redirect_uri=http://dc.51csharp.com/SystemManage/openid.aspx&response_type=code&scope=snsapi_base&state="+id+"&connect_redirect=1#wechat_redirect";
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getImg(url);
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}
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}
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}
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private string GetOAuthOpenId(string code)
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{
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string url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=wxb79cf945835c07e3&secret=e7ff8220aaae27b4dc88862bdf0a0087&code=" + code + "&grant_type=authorization_code";
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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Stream stream = response.GetResponseStream(); //获取响应的字符串流
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if (stream != null)
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{
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StreamReader sr = new StreamReader(stream); //创建一个stream读取流
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string html = sr.ReadToEnd(); //从头读到尾，放到字符串html李米
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sr.Close();
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stream.Close();
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Dictionary<string, object> jsDict = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, object>>(html);
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if (jsDict.ContainsKey("openid"))
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return jsDict["openid"].ToString();
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else
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return "";
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}
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return "";
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}
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private void getImg(string url)
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{
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QRCodeEncoder endocder = new QRCodeEncoder();
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//二维码背景颜色
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//endocder.QRCodeBackgroundColor = System.Drawing.Color.ForestGreen;
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//二维码编码方式
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endocder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
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//每个小方格的宽度
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endocder.QRCodeScale = 5;
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//二维码版本号
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//endocder.QRCodeVersion = 5;
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//二维码版本号 改成0能解决长字符串“索引超出了数组界限”问题
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endocder.QRCodeVersion = 0;
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//纠错等级
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endocder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
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//将json串做成二维码
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try
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{
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using (Bitmap bitmap = endocder.Encode(url, System.Text.Encoding.UTF8))
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{
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using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
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{
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bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
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string base64 = Convert.ToBase64String(ms.ToArray());
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Image1.ImageUrl = "data:image/png;base64," + base64;
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}
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}
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}
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catch (Exception ex)
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{
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Response.Write("生成二维码失败");
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Response.End();
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}
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}
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} |