C#实现微信扫码登录

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
public partial class callback_WeixinLogin : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["loginState"] != null && Request.QueryString["state"] != null && Request.QueryString["code"] != null)
{
string state = Request.QueryString["state"].ToString();
if (!Session["loginState"].ToString().Equals(state))
{
Response.Redirect("../Reminder-reviewError.html");
Response.End();
}
else
{
string code = Request.QueryString["code"].ToString();
QQ_callback qq_callback = new QQ_callback();
//通过code获取微信用户的资料，下面贴代码
Weixin_info weixin_info = qq_callback.getWeixinUserInfoJSON(code);
string openId = weixin_info.unionid;
Handler handler = new Handler();
string userId = handler.GetCallback(openId);
string userName = weixin_info.nickname;
string sex = weixin_info.sex;
if ("1".Equals(sex))
{
sex = "男";
}
else if ("0".Equals(sex))
{
sex = "女";
}
else
{
sex = "保密";
}
string userSex = sex;
string pwd = "123456;//初始密码
pwd = Encrypt.MD5.MD5Encrypt(pwd);
string province = weixin_info.province;
//string city = weixin_info.city;
string prId = "";
string dqqy = "";
string lgoinMode = "WeiXin";
//获取ip
string memberIP = handler.GetHostAddress();
//登录信息存到数据库，初始密码123456
handler.AddQQTempMember(openId, pwd, memberIP, userName, userSex, prId, dqqy, lgoinMode);
//登录成功，跳转到会员中心首页
Response.Redirect("../member/index.html");
}
}
else
{
//如果没有获得几个参数就重定向到自己定义的错误提示页面
Response.Redirect("../Reminder-reviewError.html");
//Response.End();
}
}
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json;
using System.IO;
using System.Net;
using System.Text;
/// <summary>
///QQ_callback 的摘要说明
/// </summary>
public class QQ_callback
{
public QQ_callback()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
/// <summary>
/// 获得Weixn回调信息字符串json
/// </summary>
/// <param name="code">Authorization Code</param>
/// <returns></returns>
public Weixin_info getWeixinUserInfoJSON(string code)
{
string appid = "你在微信开放平台申请通过后的获得的appid";
string secret = "你在微信开放平台申请通过后的获得的secret";
string apiurl = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", appid,secret, code);
System.GC.Collect();
System.Net.ServicePointManager.DefaultConnectionLimit = 200;
WebRequest request = WebRequest.Create(apiurl);
WebResponse response = request.GetResponse();
Stream stream = response.GetResponseStream();
Encoding encode = Encoding.UTF8;
StreamReader reader = new StreamReader(stream, encode);
string jsonText = reader.ReadToEnd();
JObject jo1 = (JObject)JsonConvert.DeserializeObject(jsonText);
string access_token = jo1["access_token"].ToString();
string refresh_token = jo1["refresh_token"].ToString();
string openid = jo1["openid"].ToString();
string url_me = string.Format("https://api.weixin.qq.com/sns/oauth2/refresh_token?appid={0}&grant_type=refresh_token&refresh_token={1}",appid, refresh_token);
request = WebRequest.Create(url_me);
response = request.GetResponse();
stream = response.GetResponseStream();
reader = new StreamReader(stream, encode);
string openIdStr = reader.ReadToEnd();
JObject jo = (JObject)JsonConvert.DeserializeObject(openIdStr);
//string access_token = jo["access_token"].ToString();
string openId = jo["openid"].ToString();
根据OpenID获取用户信息 可以显示更多 用的就几个 需要的可以自己在下面加
string getinfo = string.Format("https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}", access_token, openId);
request = WebRequest.Create(getinfo);
response = request.GetResponse();
stream = response.GetResponseStream();
reader = new StreamReader(stream, encode);
string userStr = reader.ReadToEnd();
//this.Label1.Text = userStr;
//this.Label2.Text = openIdStr;
JObject info = (JObject)JsonConvert.DeserializeObject(userStr);
Weixin_info weixin_info = new Weixin_info();//自己定义的dto
weixin_info.openId = openId;
weixin_info.nickname = info["nickname"].ToString();
weixin_info.sex = info["sex"].ToString();
weixin_info.province = info["province"].ToString();
weixin_info.city = info["city"].ToString();
weixin_info.headimgurl = info["headimgurl"].ToString();//大小为30×30像素的QQ空间头像URL。
weixin_info.unionid = info["unionid"].ToString();//用户统一标识。针对一个微信开放平台帐号下的应用，同一用户的unionid是唯一的。
reader.Close();
stream.Flush();
stream.Close();
response.Close();
return weixin_info;
}
｝

1
2
3
4
5
6
7
8
9
10
11
public class Weixin_info
{
public string openId { get; set; }//普通用户的标识，对当前开发者帐号唯一
public string nickname { get; set; }//普通用户昵称
public string sex { get; set; }//普通用户性别，1为男性，2为女性
public string province { get; set; }//普通用户个人资料填写的省份
public string city { get; set; }//普通用户个人资料填写的城市
public string headimgurl { get; set; }//用户头像，最后一个数值代表正方形头像大小（有0、46、64、96、132数值可选，0代表640*640正方形头像），用户没有头像时该项为空
public string unionid { get; set; }//用户统一标识。针对一个微信开放平台帐号下的应用，同一用户的unionid是唯一的。
}