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wechat crawler url拼接 url解析 微信爬虫 json序列化 反序列化

WechatPublicRequest\Program.cs

using System.Collections.Specialized;
using System.Diagnostics;
using System.Web;
using Newtonsoft.Json;
 
class Program
{
 
    static async Task Main()
    {
 
        var latestTxtFilePath = GetLatestTxtFilePath();
        System.Console.WriteLine(latestTxtFilePath);
        string htmlContent = File.ReadAllText(latestTxtFilePath);
        (string biz, string uin, string pass_ticket, string key, string appmsg_token) = ExtractParameters(htmlContent);
        var configFilePath = "config.json";
        string currentOffset = File.ReadAllText(configFilePath);
        OffsetConfig offsetConfig = JsonConvert.DeserializeObject<OffsetConfig>(currentOffset) ?? throw new Exception("OffsetConfig is null");
        for (int i = offsetConfig.CurrnetOffset; i <= 10000; i += 10)
        {
            var offset = i;
            string newUrl = GenerateNewUrl(offset, 10, biz, uin, pass_ticket, key, appmsg_token);
            // System.Console.WriteLine(newUrl);
            string v = await RequestArticles(newUrl);
            WeChatMessageResponse? articlResponseDto = JsonConvert.DeserializeObject<WeChatMessageResponse>(v);
            File.WriteAllText($"response_{DateTime.Now.ToString("yyyyMMdd_HHmmss")}.json", JsonConvert.SerializeObject(articlResponseDto));
 
            if (articlResponseDto == null)
                break;
 
            if (articlResponseDto.Ret == -3)
            {
                System.Console.WriteLine("Res=-3");
                offsetConfig.CurrnetOffset = i;
                string v1 = JsonConvert.SerializeObject(offsetConfig);
                File.WriteAllText(configFilePath, v1);
                break;
            }
 
            if (articlResponseDto.CanMessageContinue == 0)
            {
                break;
            }
            GeneralMessageList generalMessageList =
                JsonConvert.DeserializeObject<GeneralMessageList>(articlResponseDto.GeneralMessageListJson)
                ?? throw new Exception("GeneralMessageList is null");
            // 现在您可以访问 generalMessageList.List 来获取消息列表
            var articleUrls = new List<string>();
            foreach (var article in generalMessageList.List)
            {
                long timestamp = article.CommMsgInfo.Datetime;
                DateTimeOffset dateTimeOffset = DateTimeOffset.FromUnixTimeSeconds(timestamp);
                DateTime publishTime = dateTimeOffset.LocalDateTime;
                // System.Console.WriteLine(publishTime);
                // System.Console.WriteLine(article.AppMsgExtInfo.ContentUrl);
                articleUrls.Add(article.AppMsgExtInfo.ContentUrl);
                if (article.AppMsgExtInfo.IsMulti == 1)
                {
                    // System.Console.WriteLine("多文章信息");
                    foreach (var a in article.AppMsgExtInfo.MultiAppMsgItemList)
                    {
                        // System.Console.WriteLine(a.ContentUrl);
                        articleUrls.Add(a.ContentUrl);
                    }
                }
            }
 
            break;
        }
    }
 
    private static string GetLatestTxtFilePath()
    {
        string newestFilePath;
        string path = @"C:\Users\user\AppData\Local\Temp";
        var directoryInfo = new DirectoryInfo(path);
        FileInfo? newestFile = directoryInfo.GetFiles("*tmp.txt").OrderByDescending(f => f.CreationTime).FirstOrDefault();
        if (newestFile != null)
        {
            newestFilePath = newestFile.FullName;
        }
        else
        {
            newestFilePath = string.Empty;
        }
        return newestFilePath;
    }
 
 
    private static (string biz, string uin, string pass_ticket, string key, string appmsg_token) ExtractParameters(string htmlContent)
    {
        string appmsg_token = htmlContent.Split(@"window.appmsg_token = """).Last().Split("\n").First().Replace(@""";", "").Trim();
        string key = htmlContent.Split(@"var key = """).Last().Split("\n").First().Replace(@""" || """";", "").Trim();
        string pass_ticket = htmlContent.Split(@"var pass_ticket = """).Last().Split("\n").First().Replace(@""" || """";", "").Trim();
        string uin = htmlContent.Split(@"var uin = """).Last().Split("\n").First().Replace(@""" || """";", "").Trim();
        string biz = htmlContent.Split(@"__biz: '").Last().Split("\n").First().Replace(@"',", "").Trim();
        return (biz, uin, pass_ticket, key, appmsg_token);
    }
 
    public static string GenerateNewUrl(int offset, int count, string biz, string uin, string pass_ticket, string key, string appmsg_token)
    {
        // 创建一个空的查询字符串实例
        NameValueCollection newQueryCollection = HttpUtility.ParseQueryString(string.Empty);
        // 添加参数
        newQueryCollection.Add("action", "getmsg");
        newQueryCollection.Add("__biz", biz);
        newQueryCollection.Add("f", "json");
        newQueryCollection.Add("offset", offset.ToString());
        newQueryCollection.Add("count", count.ToString());
        newQueryCollection.Add("is_ok", "1");
        newQueryCollection.Add("scene", "124");
        newQueryCollection.Add("uin", uin);
        newQueryCollection.Add("key", key);
        newQueryCollection.Add("pass_ticket", pass_ticket);
        newQueryCollection.Add("appmsg_token", appmsg_token);
        newQueryCollection.Add("wxtoken", string.Empty);
        newQueryCollection.Add("x5", "0");
        // 将查询字符串转换为字符串形式
        string? query = newQueryCollection.ToString();
        var newUrl = $"https://mp.weixin.qq.com/mp/profile_ext?{query}";
        return newUrl;
    }
 
    public static async Task<string> RequestArticles(string url)
    {
        var client = new HttpClient();
 
        var request = new HttpRequestMessage
        {
            Method = HttpMethod.Get,
 
            RequestUri = new Uri(url),
 
            Headers =
            {
                { "host", "mp.weixin.qq.com" },
                {
                    "user-agent",
                    "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36 QBCore/4.0.1301.400 QQBrowser/9.0.2524.400 Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2875.116 Safari/537.36 NetType/WIFI MicroMessenger/7.0.5 WindowsWechat"
                },
                { "x-requested-with", "XMLHttpRequest" },
                { "accept", "*/*" },
                {
                    "referer",
                    "https://mp.weixin.qq.com/mp/profile_ext?action=home&__biz=MzIyODU3MzUzNA==&scene=124&uin=NDA4Mzg1NTk1&key=daf9bdc5abc4e8d09279856c85ab26663b0e996252fd607b2035c6db5ff6ab2c3e1e84d19704a7b17655085e77f37bffcf54bbd45d057c86f15cff8940697f997eeb46f73ddfffb2cabff6fb3172ca365a809c8bdd9b9658e11ab0a2eee1f64e0b97c00725713646c85dd157805fd263219bbbed79013f1cd1740092726a24cb&devicetype=Windows+10+x64&version=62090538&lang=zh_CN&a8scene=7&acctmode=0&pass_ticket=YzPgVcUQZmmEtdUZZh+9UodacIwMMAAkaFIFgqe8hnLbKuO53V4Pr0Es/hHANfsJ&winzoom=1"
                },
                // { "accept-language", @"zh-CN,zh;q=0.8,en-US;q=0.6,en;q=0.5;q=0.4" },
                {
                    "Cookie",
                    "wxuin=408385595; devicetype=android-33; version=2800315a; lang=zh_CN; pass_ticket=YzPgVcUQZmmEtdUZZh9UodacIwMMAAkaFIFgqe8hnLbKuO53V4Pr0Es/hHANfsJ; wap_sid2=CLvw3cIBEooBeV9IUDdmR1gyc1gzVFhWb3djVkRYWGdPejRGZDF0LXVrSHNoaHVONWthOWpBclZFU3MxMi13ZTAzbUNuUGRCNGFpekI3ZmEyUlR2Y3FWQzZKX0QxWEdDQk9VQUltYUJiUm9FU2dHZ1VCOWFrZW5PcmNFYnVUcWVVRjRjRTZpeTlxYmNOOFNBQUF+MMfe0rUGOA1AlU4="
                },
            },
        };
 
        using (var response = await client.SendAsync(request))
        {
            response.EnsureSuccessStatusCode();
            var body = await response.Content.ReadAsStringAsync();
            // Console.WriteLine(body);
            return body;
        }
    }
}

WechatPublicRequest\ArticleEntity.cs

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
 
public class WeChatMessageResponse
{
    [JsonProperty("ret")]
    public int Ret { get; set; }
 
    [JsonProperty("errmsg")]
    public string ErrorMessage { get; set; }
 
    [JsonProperty("msg_count")]
    public int MessageCount { get; set; }
 
    [JsonProperty("can_msg_continue")]
    public int CanMessageContinue { get; set; }
 
    [JsonProperty("general_msg_list")]
    public string GeneralMessageListJson { get; set; }
 
    [JsonProperty("next_offset")]
    public int NextOffset { get; set; }
 
    [JsonProperty("video_count")]
    public int VideoCount { get; set; }
 
    [JsonProperty("use_video_tab")]
    public int UseVideoTab { get; set; }
 
    [JsonProperty("real_type")]
    public int RealType { get; set; }
 
    [JsonProperty("home_page_list")]
    public List<object> HomePageList { get; set; }
}
 
public class GeneralMessageList
{
    [JsonProperty("list")]
    public List<MessageItem> List { get; set; }
}
 
public class MessageItem
{
    [JsonProperty("comm_msg_info")]
    public CommMsgInfo CommMsgInfo { get; set; }
 
    [JsonProperty("app_msg_ext_info")]
    public AppMsgExtInfo AppMsgExtInfo { get; set; }
}
 
public class CommMsgInfo
{
    [JsonProperty("id")]
    public long Id { get; set; }
 
    [JsonProperty("type")]
    public int Type { get; set; }
 
    [JsonProperty("datetime")]
    public long Datetime { get; set; }
 
    [JsonProperty("fakeid")]
    public string FakeId { get; set; }
 
    [JsonProperty("status")]
    public int Status { get; set; }
 
    [JsonProperty("content")]
    public string Content { get; set; }
}
 
public class AppMsgExtInfo
{
    [JsonProperty("title")]
    public string Title { get; set; }
 
    [JsonProperty("digest")]
    public string Digest { get; set; }
 
    [JsonProperty("content")]
    public string Content { get; set; }
 
    [JsonProperty("fileid")]
    public int FileId { get; set; }
 
    [JsonProperty("content_url")]
    public string ContentUrl { get; set; }
 
    [JsonProperty("source_url")]
    public string SourceUrl { get; set; }
 
    [JsonProperty("cover")]
    public string Cover { get; set; }
 
    [JsonProperty("subtype")]
    public int Subtype { get; set; }
 
    [JsonProperty("is_multi")]
    public int IsMulti { get; set; }
 
    [JsonProperty("multi_app_msg_item_list")]
    public List<AppMsgExtInfoMulti> MultiAppMsgItemList { get; set; }
 
    [JsonProperty("author")]
    public string Author { get; set; }
 
    [JsonProperty("copyright_stat")]
    public int CopyrightStat { get; set; }
 
    [JsonProperty("duration")]
    public int Duration { get; set; }
 
    [JsonProperty("del_flag")]
    public int DelFlag { get; set; }
 
    [JsonProperty("item_show_type")]
    public int ItemShowType { get; set; }
 
    [JsonProperty("audio_fileid")]
    public int AudioFileId { get; set; }
 
    [JsonProperty("play_url")]
    public string PlayUrl { get; set; }
 
    [JsonProperty("malicious_title_reason_id")]
    public int MaliciousTitleReasonId { get; set; }
 
    [JsonProperty("malicious_content_type")]
    public int MaliciousContentType { get; set; }
}
 
public class AppMsgExtInfoMulti
{
    [JsonProperty("title")]
    public string Title { get; set; }
 
    [JsonProperty("digest")]
    public string Digest { get; set; }
 
    [JsonProperty("content")]
    public string Content { get; set; }
 
    [JsonProperty("fileid")]
    public int FileId { get; set; }
 
    [JsonProperty("content_url")]
    public string ContentUrl { get; set; }
 
    [JsonProperty("source_url")]
    public string SourceUrl { get; set; }
 
    [JsonProperty("cover")]
    public string Cover { get; set; }
 
    [JsonProperty("subtype")]
    public int Subtype { get; set; }
 
 
    [JsonProperty("author")]
    public string Author { get; set; }
 
    [JsonProperty("copyright_stat")]
    public int CopyrightStat { get; set; }
 
    [JsonProperty("duration")]
    public int Duration { get; set; }
 
    [JsonProperty("del_flag")]
    public int DelFlag { get; set; }
 
    [JsonProperty("item_show_type")]
    public int ItemShowType { get; set; }
 
    [JsonProperty("audio_fileid")]
    public int AudioFileId { get; set; }
 
    [JsonProperty("play_url")]
    public string PlayUrl { get; set; }
 
    [JsonProperty("malicious_title_reason_id")]
    public int MaliciousTitleReasonId { get; set; }
 
    [JsonProperty("malicious_content_type")]
    public int MaliciousContentType { get; set; }
}
 
public class OffsetConfig
{
    public int CurrnetOffset { get; set; }
    public string Biz { get; set; }
}

WechatPublicRequest\config.json

{"CurrnetOffset":0,"Biz":"MzI5NDg3NTQyMw=="}
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