前兩天朋友叫我模仿一個網站，剛剛開始，我一個頁面一個頁面查看源碼並復制和保存，花了我很多時間，一個字“累”，為了減輕工作量，我寫了個網站“克隆工具”，一鍵克隆，比起人工操作，
效率提高了200%以上，精確度也大大提高，雖然網上也很多網站克隆工具，但我覺得作為一個程序員，要有點研究精神，哈哈哈，可以根據自己的需要隨意編寫自己需要的功能。

下面我將我寫的“網站克隆工具”實現方法分享給大家，源碼在文末有下載鏈接，有需要的朋友可以下載來玩，也可以根據自己的需要做相應的修改或優化。

一睹為快，先看看界面：

簡單的工作流程：

項目代碼目錄結構：

下面一步步實現程序功能：

1.新建主界面窗體（MainForm.cs）：

2.新建模型類（UrlModel.cs）

public class UrlModel
    {
        public string RelatedPath { get; set; }
        public string AbsoluteUri { get; set; }
        public string CurrPath { get; set; }
        public string RootPath { get; set; }

        public string Host { get; set; }
        public int Port { get; set; }
        public string Scheme { get; set; }
    }

3.新建服務類（Services）

UrlParser：

public class UrlParser
    {
        public static UrlModel Parse(string url)
        {
            UrlModel model = new UrlModel();

            //默認
            if (url.Length < 8)
                throw new Exception("url參數不正確");
            else if (!url.ToLower().StartsWith("http:") && !url.ToLower().StartsWith("https:"))
                throw new Exception("url格式有誤");

            if (url.LastIndexOf(‘/‘) < 8)
                url = url + "/";

            Regex reg = new Regex("(?<scheme>(http|https))://(?<host>.+?)/", RegexOptions.Singleline);

            if (reg.IsMatch(url))
            {
                string scheme = reg.Match(url).Groups["scheme"].Value;
                string host = reg.Match(url).Groups["host"].Value;
                if (host.Contains(":"))
                {
                    var aa = host.Split(‘:‘);
                    if (aa.Length == 2)
                    {
                        model.Host = aa[0];
                        model.Port = int.Parse(aa[1]);
                    }
                }
                else
                {
                    model.Host = host;
                    model.Port = 80;
                }

                int index = url.IndexOf(‘/‘, 8);

                model.RelatedPath = url.Substring(index);
                model.AbsoluteUri = url;
                model.Scheme = scheme;
                model.CurrPath = url.Substring(0, url.LastIndexOf("/"));

                if (80 == model.Port)
                {
                    model.RootPath = string.Format("{0}://{1}", model.Scheme, model.Host);
                }
                else
                {
                    model.RootPath = string.Format("{0}://{1}:{2", model.Scheme, model.Host, model.Port);
                }
            }
            else
            {
                throw new Exception("url解析失敗!");
            }

            return model;
        }
    }

WebPageService：

/// <summary>
    /// 網頁處理服務工具
    /// </summary>
    public class WebPageService
    {
        private static string[] excludekeys = { "http:", "https:", "//", "#", "javascript:", "?", "tel:", "mailto:" };
        /// <summary>
        /// 獲取所有html元素的href屬性值,只獲取站點本地的鏈接，站外的不獲取
        /// </summary>
        /// <param name="html">頁面的html源碼</param>
        /// <returns></returns>
        public static List<UrlModel> GetLocalHrefs(string url,string html)
        {
            if (string.IsNullOrEmpty(html))
                return new List<UrlModel>();

            Dictionary<string, UrlModel> urls = GetHrefs(url,html);
            List<UrlModel> newUrls = new List<UrlModel>();

            if (null != urls)
            {
                foreach (string key in urls.Keys)
                {
                    string newkey = key.ToLower();
                    bool iscontained = false;
                    foreach (var exkey in excludekeys)
                    {
                        if (newkey.IndexOf(exkey) == 0)
                        {
                            iscontained = true;
                            break;
                        }
                    }

                    if (!iscontained) {
                        //只獲取本地路徑
                        newUrls.Add(urls[key]);
                    }
                }
            }

            return newUrls;
        }

        /// <summary>
        /// 獲取所有html元素的src屬性值,只獲取站點本地的鏈接，站外的不獲取
        /// </summary>
        /// <param name="html">頁面的html源碼</param>
        /// <returns></returns>
        public static List<UrlModel> GetLocalSrcs(string url,string html)
        {
            if (string.IsNullOrEmpty(html))
                return new List<UrlModel>();

            Dictionary<string, UrlModel> urls = GetSrc(url, html);
            List<UrlModel> newUrls = new List<UrlModel>();

            if (null != urls)
            {
                foreach (string key in urls.Keys)
                {
                    string newkey = key.ToLower();
                    bool iscontained = false;
                    foreach (var exkey in excludekeys)
                    {
                        if (newkey.IndexOf(exkey) == 0)
                        {
                            iscontained = true;
                            break;
                        }
                    }

                    if (!iscontained)
                    {
                        //只獲取本地路徑
                        newUrls.Add(urls[key]);
                    }
                }
            }

            return newUrls;
        }

        private static Dictionary<string, UrlModel> GetHrefs(string url,string html)
        {
            if (string.IsNullOrEmpty(html))
                return null;

            UrlModel currUrl = UrlParser.Parse(url);
            Dictionary<string, UrlModel> urls = new Dictionary<string, UrlModel>();
            Regex reg = new Regex("href=\"(?<Url>.+?)\"", RegexOptions.IgnoreCase);
            
            if (currUrl != null)
            {
                AddUrlModel(html, currUrl, urls, reg);
            }

            return urls;
        }

        private static Dictionary<string, UrlModel> GetSrc(string url,string html)
        {
            if (string.IsNullOrEmpty(html))
                return null;

            UrlModel currUrl = UrlParser.Parse(url);
            Dictionary<string, UrlModel> urls = new Dictionary<string, UrlModel>();
            Regex reg = new Regex("(src=\"(?<Url>.+?)\"|url\\((?<Url>.+?)\\))", RegexOptions.IgnoreCase);

            if (currUrl != null)
            {
                AddUrlModel(html, currUrl, urls, reg);
            }

            return urls;
        }

        private static void AddUrlModel(string html, UrlModel currUrl, Dictionary<string, UrlModel> urls, Regex reg)
        {
            if (reg.IsMatch(html))
            {
                MatchCollection matchs = reg.Matches(html);
                foreach (Match item in matchs)
                {
                    try
                    {
                        string strUrl = item.Groups["Url"].Value;
                        UrlModel model = new UrlModel();
                        model.RelatedPath = strUrl;
                        model.CurrPath = currUrl.CurrPath;
                        model.RootPath = currUrl.RootPath;
                        model.Scheme = currUrl.Scheme;
                        model.Port = currUrl.Port;
                        model.Host = currUrl.Host;

                        if (strUrl.StartsWith("/"))
                        {
                            //絕對目錄情況下
                            model.AbsoluteUri = string.Format("{0}{1}", model.RootPath, model.RelatedPath);
                        }
                        else
                        {
                            //相對目錄情況下
                            string currPath = model.CurrPath;
                            int depth = 0;
                            string path = model.RelatedPath;

                            if (path.StartsWith(".."))
                            {
                                try
                                {
                                    while (path.StartsWith(".."))
                                    {
                                        depth++;
                                        path = path.Substring(3);
                                        currPath = currPath.Substring(0, currPath.LastIndexOf("/"));
                                    }

                                    model.AbsoluteUri = string.Format("{0}/{1}", currPath, path);
                                }
                                catch
                                {

                                }
                            }
                            else
                            {
                                model.AbsoluteUri = string.Format("{0}/{1}", currPath, path);
                            }

                        }

                        strUrl = strUrl.Trim().ToLower();

                        urls.Add(strUrl, model);
                    }
                    catch
                    {
                    }
                }
            }
        }
    }

4.網頁源碼扒取類

public class HttpTool
    {
        public static string HttpGet(string url, string referer, string encoding, out string msg)
        {
            msg = string.Empty;
            string result = string.Empty;
            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

                //request.ContentType = "application/x-www-form-urlencoded";
                request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
                request.Referer = referer;
                request.Method = "GET";
                request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36";
                //request.Headers.Add("Accept-Language", "zh-cn");
                //request.Headers.Add("Accept-Encoding", "gzip,deflate");

                request.Timeout = 60000;//一分鐘

                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream responseStream = response.GetResponseStream();
                if (responseStream != null)
                {
                    StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.GetEncoding(encoding));
                    result = reader.ReadToEnd();
                    reader.Close();
                    responseStream.Close();
                    request.Abort();
                    response.Close();
                    return result.Trim();
                }
            }
            catch (Exception ex)
            {
                msg = ex.Message + ex.StackTrace;
            }

            return result;
        }

        public static void DownFile(string uRLAddress, string localPath, string filename)
        {
            WebClient client = new WebClient();
            Stream str = client.OpenRead(uRLAddress);
            StreamReader reader = new StreamReader(str);
            byte[] mbyte = new byte[1000000];
            int allmybyte = (int)mbyte.Length;
            int startmbyte = 0;

            while (allmybyte > 0)
            {
                int m = str.Read(mbyte, startmbyte, allmybyte);
                if (m == 0)
                {
                    break;
                }
                startmbyte += m;
                allmybyte -= m;
            }

            reader.Dispose();
            str.Dispose();

            string path = Path.Combine(localPath, filename);
            FileStream fstr = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write);
            fstr.Write(mbyte, 0, startmbyte);
            fstr.Flush();
            fstr.Close();
        }
    }

5.網站克隆主類

接口：

interface IWebCloneWorker
    {
        void Start();
        void Cancel();
    }

實現類：

public class WebCloneWorker : IWebCloneWorker
    {
        //網站頁面克隆深度(如：0-首頁,1-分類頁,2-詳細頁面)
        public static int depth = 0;
        
        //要克隆的網站網址
        public string Url { get; set; }

        //克隆後，保存的路徑
        public string SavePath { get; set; }

        private BackgroundWorker backgroundWorker1 = null;
        public event UrlChangedEventHandler UrlChanged;
        public event FileSavedSuccessEventHandler FileSavedSuccess;
        public event FileSavedFailEventHandler FileSavedFail;
        public event DownloadCompletedEventHandler DownloadCompleted;
        public event CollectingUrlEventHandler CollectingUrl;
        public event CollectedUrlEventHandler CollectedUrl;
        public event ProgressChangedEventHandler ProgressChanged;

        //所有頁面、文件資源地址集合
        private Dictionary<string, UrlModel> _Hrefs = new Dictionary<string, UrlModel>();

        /// <summary>
        /// 所有頁面、文件資源地址集合
        /// </summary>
        public Dictionary<string,UrlModel> Hrefs
        {
            get { return _Hrefs; }
            set { _Hrefs = value; }
        }

        //網站頁面請求編碼,默認為UTF-8
        private string _Encoding = "utf-8";

        //網站頁面請求編碼,默認為UTF-8
        public string Encoding
        {
            get { return _Encoding; }
            set { _Encoding = value; }
        }

        public WebCloneWorker() { }

        public WebCloneWorker(string url,string path) 
        {
            //設置網站、保存路徑
            this.Url = url;
            this.SavePath = path;

            if (string.IsNullOrEmpty(this.Url))
                throw new Exception("請輸入網址");

            if (string.IsNullOrEmpty(this.SavePath))
                throw new Exception("請選擇要保存的目錄");

            backgroundWorker1 = new BackgroundWorker();

            //設置報告進度更新
            backgroundWorker1.WorkerReportsProgress = true;
            backgroundWorker1.WorkerSupportsCancellation = true;

            //註冊線程主體方法
            backgroundWorker1.DoWork += backgroundWorker1_DoWork;

            //註冊更新UI方法
            backgroundWorker1.ProgressChanged += backgroundWorker1_ProgressChanged;

            //處理完畢
            backgroundWorker1.RunWorkerCompleted += backgroundWorker1_RunWorkerCompleted;
        }

        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Cancelled) {
                return;
            }

            if (this.DownloadCompleted != null)
            {
                DownloadCompletedEventArgs eventArgs = new DownloadCompletedEventArgs(e.Result, e.Error, e.Cancelled);
                this.DownloadCompleted(this, eventArgs);
            }
        }

        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            //進度回調
            if (this.ProgressChanged != null) 
                this.ProgressChanged(this, e);

            UrlModel model = (UrlModel)e.UserState;

            if (this.UrlChanged != null)
            {
                //Url改變後，回調
                UrlChangedEventArgs eventArgs = new UrlChangedEventArgs(model);
                this.UrlChanged(this, eventArgs);
            }

            try
            {
                string dir = this.SavePath;
                string url = model.AbsoluteUri;
                string AbsolutePath = url.Substring(url.IndexOf(‘/‘, 8));
                string fileName = "";

                if (url.IndexOf(‘?‘) > 0)
                {
                    string path = AbsolutePath.Substring(0, model.RelatedPath.IndexOf(‘?‘));
                    fileName = System.IO.Path.GetFileName(path);
                }
                else
                {
                    fileName = System.IO.Path.GetFileName(AbsolutePath);
                }

                //默認首頁
                if (string.IsNullOrEmpty(fileName) || fileName.IndexOf(".") < 0)
                {
                    fileName = "index.html";

                    if (!AbsolutePath.EndsWith("/"))
                        AbsolutePath = AbsolutePath + "/";
                }

                fileName = System.Web.HttpUtility.UrlDecode(fileName);

                string localPath = string.Format("{0}{1}", dir, System.IO.Path.GetDirectoryName(AbsolutePath));
                if (!System.IO.Directory.Exists(localPath))
                {
                    System.IO.Directory.CreateDirectory(localPath);
                }

                //判斷文件是否存在，存在不再下載
                string path2 = Path.Combine(localPath, fileName);
                if (File.Exists(path2))
                {
                    return;
                }

                //下載網頁、圖片、資源文件
                HttpTool.DownFile(url, localPath, fileName);

                //保存成功後，回調
                if (this.FileSavedSuccess != null)
                {
                    FileSavedSuccessEventArgs eventArgs = new FileSavedSuccessEventArgs(model);
                    this.FileSavedSuccess(this, eventArgs);
                }
            }
            catch (Exception ex)
            {
                //保存失敗後，回調
                if (this.FileSavedFail != null)
                {
                    FileSavedFailEventArgs eventArgs = new FileSavedFailEventArgs(ex);
                    this.FileSavedFail(this, eventArgs);
                }
            }
        }

        void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            //獲取資源
            GetResource();

            int index = 1;
            if (this.Hrefs.Keys.Count > 0)
            {
                foreach (var k in this.Hrefs.Keys)
                {
                    //取消操作
                    if (backgroundWorker1.CancellationPending)
                    {
                        e.Cancel = true;
                        return;
                    }

                    backgroundWorker1.ReportProgress(index, this.Hrefs[k]);
                    index++;

                    //掛起當前線程200毫秒
                    Thread.Sleep(200);
                }
            }
        }

        public void Start()
        {
            if (this.backgroundWorker1.IsBusy)
                return;

            this.backgroundWorker1.RunWorkerAsync();
        }

        public void Cancel()
        {
            if (this.backgroundWorker1.CancellationPending)
                return;

            this.backgroundWorker1.CancelAsync();
        }
        
        private void GetResource()
        {
            string url = this.Url;
            string referer = this.Url;
            string msg = "";
            string html = HttpTool.HttpGet(url, referer, this.Encoding, out msg);

            //收集頁面鏈接
            GetHrefs(0, url, html);

            //收集完畢
            if (null != CollectedUrl)
            {
                UrlModel urlModel = new UrlModel();
                CollectedUrlEventArgs eventArgs = new CollectedUrlEventArgs(urlModel);
                this.CollectedUrl(this, eventArgs);
            }

        }

        private void GetHrefs(int level,string url,string html)
        {
            #region 添加當前頁

            UrlModel currUrl = UrlParser.Parse(url);

            try
            {
                //取消
                if (backgroundWorker1.CancellationPending)
                    return;

                this.Hrefs.Add(currUrl.RelatedPath, currUrl);

                //收集回調
                if (null != CollectingUrl)
                {
                    CollectingUrlEventArgs eventArgs = new CollectingUrlEventArgs(currUrl);
                    this.CollectingUrl(this, eventArgs);
                }
            }
            catch
            {
            }

            #endregion

            //獲取相關鏈接(含有href屬性的)
            List<UrlModel> list1 = WebPageService.GetLocalHrefs(url,html);

            //獲取圖片，文件等資源文件(含有src屬性的)
            List<UrlModel> listSrcs = WebPageService.GetLocalSrcs(url,html);

            #region 獲取當級資源文件

            if (listSrcs != null)
            {
                for (int i = 0; i < listSrcs.Count; i++)
                {
                    UrlModel urlModel = listSrcs[i];
                    try
                    {
                        //取消
                        if (backgroundWorker1.CancellationPending) 
                            return;

                        this.Hrefs.Add(urlModel.RelatedPath, urlModel);

                        //收集回調
                        if (null != CollectingUrl)
                        {
                            CollectingUrlEventArgs eventArgs = new CollectingUrlEventArgs(urlModel);
                            this.CollectingUrl(this, eventArgs);
                        }
                    }
                    catch
                    { }
                }
            }

            #endregion

            #region 獲取子級頁面資源

            //獲取第二級
            if (list1 != null)
            {
                for (int i = 0; i < list1.Count; i++)
                {
                    UrlModel urlModel = list1[i];

                    try
                    {
                        //取消
                        if (backgroundWorker1.CancellationPending)
                            return;

                        this.Hrefs.Add(urlModel.RelatedPath, urlModel);

                        //收集回調
                        if (null != CollectingUrl)
                        {
                            CollectingUrlEventArgs eventArgs = new CollectingUrlEventArgs(urlModel);
                            this.CollectingUrl(this, eventArgs);
                        }
                    }
                    catch
                    { }

                    string msg = "";
                    html = HttpTool.HttpGet(urlModel.AbsoluteUri, urlModel.AbsoluteUri, this.Encoding, out msg);

                    #region 獲取子級資源文件

                    /*
                     * 獲取二級資源文件
                     * */
                    listSrcs = WebPageService.GetLocalSrcs(urlModel.AbsoluteUri, html);//資源文件

                    if (listSrcs != null)
                    {
                        for (int j = 0; j < listSrcs.Count; j++)
                        {
                            UrlModel urlModel2 = listSrcs[j];

                            try
                            {
                                //取消
                                if (backgroundWorker1.CancellationPending)
                                    return;

                                this.Hrefs.Add(urlModel2.RelatedPath, urlModel2);

                                //收集回調
                                if (null != CollectingUrl)
                                {
                                    CollectingUrlEventArgs eventArgs = new CollectingUrlEventArgs(urlModel2);
                                    this.CollectingUrl(this, eventArgs);
                                }
                            }
                            catch
                            { }

                            //掛起線程20毫秒
                            Thread.Sleep(20);
                        }
                    }
                    #endregion

                    //掛起線程20毫秒
                    Thread.Sleep(20);

                    //到達指定深度後，退出
                    if (level >= depth)
                        return;

                    //遞歸
                    GetHrefs(level + 1, urlModel.AbsoluteUri, html);
                }
            }

            #endregion
        }
    }

6.一些事件、委托類：

public delegate void UrlChangedEventHandler(object sender, UrlChangedEventArgs e);
    public delegate void FileSavedSuccessEventHandler(object sender, FileSavedSuccessEventArgs e);
    public delegate void FileSavedFailEventHandler(object sender, FileSavedFailEventArgs e);
    public delegate void DownloadCompletedEventHandler(object sender, DownloadCompletedEventArgs e);
    public delegate void CollectingUrlEventHandler(object sender, CollectingUrlEventArgs e);
    public delegate void CollectedUrlEventHandler(object sender, CollectedUrlEventArgs e);
    public delegate void ProgressChangedEventHandler(object sender, ProgressChangedEventArgs e);

public class CollectedUrlEventArgs : EventArgs
public class CollectingUrlEventArgs : EventArgs
public class DownloadCompletedEventArgs : EventArgs
public class FileSavedFailEventArgs : EventArgs
public class FileSavedSuccessEventArgs : EventArgs
public class UrlChangedEventArgs : EventArgs

代碼有點多，各位有需要的還是下載源碼查看並運行吧，由於趕時間，沒時間仔細測試程序的各個功能，難免有不足的地方。

百度網盤：鏈接：https://pan.baidu.com/s/1hja1rl9UEcl0dzTqVFt0dg 密碼：7s6r

如何打造網站克隆、仿站工具（C#版）