GeckoWebBrowser采集网络图片实例源码

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using WindowsFormsApplication1;
using Skybound.Gecko;
using System.IO;

namespace PicDownLoad
{
    public partial class Form1 : Form
    {
        static private string xulrunnerPath = Application.StartupPath   "\\xulrunner";
        public Form1()
        {
            InitializeComponent();
            InitAllCityData();
        }

        private void InitAllCityData()
        {
            Skybound.Gecko.Xpcom.Initialize(xulrunnerPath);

        }
        public static void DownloadOneFileByURL(string fileName, string url, string localPath, int timeout)
        {
            try
            {
                System.Net.HttpWebRequest request = null;
                System.Net.HttpWebResponse response = null;
                request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url   fileName);
                request.Timeout = timeout;//8000 Not work ?
                response = (System.Net.HttpWebResponse)request.GetResponse();
                Stream s = response.GetResponseStream();
                BinaryReader br = new BinaryReader(s);
                //int length2 = Int32.TryParse(response.ContentLength.ToString(), out 0);
                int length2 = Int32.Parse(response.ContentLength.ToString());
                byte[] byteArr = new byte[length2];
                s.Read(byteArr, 0, length2);
                if (File.Exists(localPath   fileName)) { File.Delete(localPath   fileName); }
                if (Directory.Exists(localPath) == false) { Directory.CreateDirectory(localPath); }
                FileStream fs = File.Create(localPath   fileName);
                fs.Write(byteArr, 0, length2);
                fs.Close();
                br.Close();
            }
            catch (Exception ex)
            {

            }
        }
        /// <summary>
        ///Web Client Method ,only For Small picture,else large please use FTP
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="url"></param>
        /// <param name="localPath"></param>
        public static void DownloadOneFileByURLWithWebClient(string fileName, string url, string localPath)
        {
            try
            {
                System.Net.WebClient wc = new System.Net.WebClient();
                if (File.Exists(localPath   fileName)) { File.Delete(localPath   fileName); }
                if (Directory.Exists(localPath) == false) { Directory.CreateDirectory(localPath); }
                wc.DownloadFile(url, localPath   fileName);
            }
            catch (Exception ex)
            {

            }
        }
        List<string> UrlList = new List<string>();
        int AllURL = 0;
      
        private void LoadLuoBO()
        {
            if (UrlList.Count > 0)
            {
                string url = UrlList[0];
                ShowProcess(loadURLCount.ToString()   "/"   AllURL.ToString());
                ShowMsg(url);
                UrlList.Remove(url);
                this.Browser.Navigate(url);
            }
        }
        int loadURLCount = 0;
        void Browser_DocumentCompleted_WEIMEI(object sender, EventArgs e)
        {
            GeckoWebBrowser br = sender as GeckoWebBrowser;
            if (br.Url.ToString() == "about:blank") { return; }
            Skybound.Gecko.GeckoElementCollection imglist = br.Document.GetElementsByTagName("img");
            foreach (Skybound.Gecko.GeckoElement a in imglist)
            {
                if (a.ClassName != null && a.ClassName.ToLower() == "imgs"
                    )
                {
                    try
                    {
                        string hreff = a.Attributes["src"].TextContent;// 排除  博海拾贝第二百零二期】吃完薯条寂寞了
                        string[] name = hreff.Split('/');
                        string filenn = "";
                        if (name.Length > 1)
                        {
                            filenn = name[name.Length - 1];
                        }
                        else
                        {
                            filenn = Guid.NewGuid().ToString()   ".jpg";
                        }
                        Log.Datalogger(hreff, "ImgList");
                        DownloadOneFileByURLWithWebClient(filenn, hreff, "d:\\imges\\");
                        //    DownloadOneFileByURL(filenn, hreff, "d:\\imges\\", 5000);

                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message);
                    }
                }
            }
            loadURLCount  ;
            LoadLuoBO();
        }
        #region 固定函数
        void AsyncNavigate(string url)
        {
            ThreadStart starter = delegate { AsyncNavigateThread(url); };
            Thread thread = new Thread(starter);
            thread.IsBackground = true;
            thread.Start();
        }
        public void ShowMsg(string msg)
        {

            if (this.InvokeRequired)
            {
                Action<string> action = this.ShowMsg;
                this.BeginInvoke(action, msg);
            }
            else
            {
                this.txtTest.Text = msg;
            }
        }
        public void ShowProcess(string msg)
        {

            if (this.InvokeRequired)
            {
                Action<string> action = this.ShowProcess;
                this.BeginInvoke(action, msg);
            }
            else
            {
                this.txtProcess.Text = msg;
            }
        }
        private delegate void StringDelegate(string url);
        private void AsyncNavigateThread(string url)
        {
            if (this == null || this.IsDisposed) return;
            if (this.InvokeRequired || Browser.InvokeRequired)
            {
                this.BeginInvoke(new StringDelegate(AsyncNavigateThread), new object[] { url });
                return;
            }
            Browser.Navigate(url);
        }
        #endregion

        private void button1_Click_1(object sender, EventArgs e)
        {
            string baseurl = txturl.Text;

            int begin = int.Parse(txtbegin.Text);
            int end = int.Parse(txtEnd.Text);
            for (int i = begin; i <= end; i  )
            {
                string replaceurl = baseurl.Replace("(*)", i.ToString());
                UrlList.Add(replaceurl);
            }
            AllURL = UrlList.Count;
            //按照顺序去读取界面去
            Browser.DocumentCompleted  = new EventHandler(Browser_DocumentCompleted_WEIMEI);
            LoadLuoBO();
        }
    }
}