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微信开发笔记：对接微信JS-SDK

https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html

第一步微信公众号配置：

 第二步编写在ashx文件中编写WechartInterface方法如下：

<%@ WebHandler Language="C#" Class="api" Debug="true" %>
using System;
using System.IO;
using System.Web;
using System.Data;
using System.Collections;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Web.SessionState;
using System.Text;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Net;
using System.Web.Extensions;
using System.Web.Script;
using System.Web.Script.Serialization;
using System.Web.Security;

public class api:IHttpHandler, IRequiresSessionState {
    public void ProcessRequest(HttpContext context) {
        context.Response.ContentType="text/plain";
        context.Response.AddHeader("Access-Control-Allow-Origin","*");
        string type = context.Request["action"];
        switch(type) {
        case "WechartInterface":
        WechartInterface(context);
        break;
            default:
                context.Response.Write("无效参数");
                break;
        }
        context.Response.End();
    }
    public void WechartInterface(HttpContext context) {
        JSSDk_Helper.WechartInterface(context);
    }
    public bool IsReusable {
        get {
            return false;
        }
    }
}
//JSSDk_Helper
public static class JSSDk_Helper {
    public static string AppID="", AppSecret="";
    public static string token="";
    #region 微信公众号 服务器配置，验证token
    public static void WechartInterface(HttpContext context){
        context.Response.ContentType = "text/plain";
        string echoString = context.Request.QueryString["echoStr"];
        string signature = context.Request.QueryString["signature"];
        string timestamp = context.Request.QueryString["timestamp"];
        string nonce = context.Request.QueryString["nonce"];
        if (CheckSignature(token, signature, timestamp, nonce)){
            if (!string.IsNullOrEmpty(echoString)){
                context.Response.Write(echoString);
                context.Response.End();
            }
        }    
    }
    /// <summary>
    /// 验证微信签名
    /// </summary>
    public static bool CheckSignature(string token, string signature, string timestamp, string nonce){
        string[] ArrTmp = { token, timestamp, nonce };
        //字典排序
        Array.Sort(ArrTmp);
        //拼接
        string tmpStr = string.Join("", ArrTmp);
        //sha1验证
        tmpStr = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");
        tmpStr = tmpStr.ToLower();
        if (tmpStr == signature){
            return true;
        }else{
            return false;
        }
    }
    #endregion
}

 第三步编写wx.config：JS如下：

$.ajax({
    url: '/api.ashx?type=GetWxJsApiConfig&url=' + escape(window.location.href),
    type: 'post',
    data: {},
    dataType: 'json',
    success: function (data) {
        wx.config({
            debug: false,
            appId: data.appId,
            timestamp: data.timestamp,
            nonceStr: data.nonceStr,
            signature: data.signature,
            jsApiList: [
                'checkJsApi', 'onMenuShareTimeline', 'onMenuShareAppMessage', 'onMenuShareQQ', 'onMenuShareWeibo', 'onMenuShareQZone',
                'hideMenuItems', 'showMenuItems', 'hideAllNonBaseMenuItem', 'showAllNonBaseMenuItem', 'translateVoice', 'startRecord',
                'stopRecord', 'onVoiceRecordEnd', 'playVoice', 'onVoicePlayEnd', 'pauseVoice', 'stopVoice', 'uploadVoice', 'downloadVoice',
                'chooseImage', 'previewImage', 'uploadImage', 'downloadImage', 'getNetworkType', 'openLocation', 'getLocation', 'hideOptionMenu',
                'showOptionMenu', 'closeWindow', 'scanQRCode', 'chooseWXPay', 'openProductSpecificView', 'addCard', 'chooseCard', 'openCard'
            ]
        });
    }
});

 第四步编写wx.config：asxh后台如下：

<%@ WebHandler Language="C#" Class="api" Debug="true" %>

using System;
using System.IO;
using System.Web;
using System.Data;
using System.Collections;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Web.SessionState;
using System.Text;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Net;
using System.Web.Extensions;
using System.Web.Script;
using System.Web.Script.Serialization;
using System.Web.Security;

public class api:IHttpHandler, IRequiresSessionState {

    public void ProcessRequest(HttpContext context) {
        context.Response.ContentType="text/plain";
        context.Response.AddHeader("Access-Control-Allow-Origin","*");
        string type = context.Request["action"];
        switch(type) {
            case "GetWxJsApiConfig":
                GetWxJsApiConfig(context);
                break;
            case "WechartInterface":
                WechartInterface(context);
                break;
            default:
                context.Response.Write("无效参数");
                break;
        }
        context.Response.End();
    }

    //接入微信 
    public void GetWxJsApiConfig(HttpContext context) {
        JSSDk_Helper.GetWxJsApiConfig(context);    
    }
    
    public void WechartInterface(HttpContext context) {
        JSSDk_Helper.WechartInterface(context);
    }

    public bool IsReusable {
        get {
            return false;
        }
    }
}
//JSSDk_Helper
public static class JSSDk_Helper {
    public static string AppID="", AppSecret="";
    public static string token="";
    public static void GetWxJsApiConfig(HttpContext context){
        string jsapi_ticket = GetJsApiTicket(context); // 假设这是你从某处获取的jsapi_ticket  
        string noncestr = CreateNonceStr(); // 生成随机字符串  
        int timestamp = GetTimestamp(); // 获取时间戳  
        string url = context.Request.QueryString["url"]; // 假设URL作为查询参数传递    
        // 排序  
        string[] arr = new string[] { "jsapi_ticket=" + jsapi_ticket, "noncestr=" + noncestr,  
            "timestamp=" + timestamp, "url=" + url.UrlEncode() };  
        Array.Sort(arr);   
        // 拼接  
        string string1 = string.Join("&", arr);    
        // sha1加密  
        string signature = FormsAuthentication.HashPasswordForStoringInConfigFile(string1, "SHA1").ToLower();           
        // 返回结果  
        context.Response.ContentType = "application/json";  
        context.Response.Write(new JavaScriptSerializer().Serialize(new { 
            appId=AppID,    
            noncestr = noncestr,  
            timestamp = timestamp,  
            signature = signature
        }));  
    }
    // 辅助方法：生成随机字符串  
    private static string CreateNonceStr()  
    {  
        int length=32;
        Random rand = new Random();  
        const string chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";  
        char[] buffer = new char[length];  
        for (int i = 0; i < length; i++)  
        {  
            buffer[i] = chars[rand.Next(chars.Length)];  
        }  
        return new string(buffer);  
    }        
    // 辅助方法：获取时间戳  
    private static int GetTimestamp()  
    {  
        TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);  
        return Convert.ToInt32(ts.TotalSeconds);  
    }  
    // 注意：需要添加URL编码的方法  
    private static string UrlEncode(this string url)  
    {  
        return HttpUtility.UrlEncode(url, Encoding.UTF8);  
    }
    private static string GetJsApiTicket(HttpContext context)  
    { 
        string accessToken = getAccessToken(context);
        // 如果是企业号用以下 URL 获取 ticket
        // $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
        string url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token="+accessToken+"";
        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "GET";
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        if (response.StatusCode >= HttpStatusCode.OK && response.StatusCode <= HttpStatusCode.Ambiguous)
        {
            StreamReader reader = new StreamReader(response.GetResponseStream());
            string responseText = reader.ReadToEnd();
            reader.Close();
            response.Close();    
            
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            ticket_model model = serializer.Deserialize<ticket_model>(responseText);
            return model.ticket;
        }
      return "";
    }
    private static string getAccessToken(HttpContext context){
        //https://developers.weixin.qq.com/doc/offiaccount/Basic_Information/Get_access_token.html
        string url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+AppID+"&secret="+AppSecret+"";

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
        request.Method = "GET";
        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        if (response.StatusCode >= HttpStatusCode.OK && response.StatusCode <= HttpStatusCode.Ambiguous)
        {
            StreamReader reader = new StreamReader(response.GetResponseStream());
            string responseText = reader.ReadToEnd();
            reader.Close();
            response.Close();    
            context.Response.Write(responseText);
            context.Response.End();
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            access_token_model model = serializer.Deserialize<access_token_model>(responseText);
            return model.access_token;
        }
        return "";
    }
    public class access_token_model{      
        public string access_token{get;set;}
        public string expires_in{get;set;}
    }
    public class ticket_model{
        public string errcode{get;set;}
        public string errmsg{get;set;}
        public string ticket{get;set;}
        public string expires_in{get;set;}
        
    }
}

 

 

相关资料：

 https://www.cnblogs.com/hyx6/p/16559698.html

posted @ 2022-11-15 14:01  峡谷少爷  阅读(178)  评论(0)    收藏  举报