使用CEfSharp之旅（12）下载网页所有图片，下载图片

 你是否在打开网站的时候想下载看到所有图片那？

  今天那咱们就用cefsharp 来是实现它：

直接上关键代码：

        public void OnResourceLoadComplete(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IResponse response, UrlRequestStatus status, long receivedContentLength)
        {
            var url = new Uri(request.Url);
            var extension = url.ToString().ToLower();
            if (request.ResourceType == ResourceType.Image || extension.EndsWith(".jpg") || extension.EndsWith(".png") || extension.EndsWith(".gif") || extension.EndsWith(".jpeg"))
            {
                string fileName = DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss-fff-") + ".png";

                string tmpRootDir = System.AppDomain.CurrentDomain.BaseDirectory + _directory;
                if (!System.IO.Directory.Exists(tmpRootDir))
                {
                    System.IO.Directory.CreateDirectory(tmpRootDir);
                }
                fileName = tmpRootDir + fileName;
                Fileutils.DownImageFile(request.Url, fileName);

                return;
            }


        }

        public CefReturnValue OnBeforeResourceLoad(IWebBrowser browserControl, IBrowser browser, IFrame frame, IRequest request, IRequestCallback callback)
        {
            var m = request.Method;
            msg?.Invoke(request.Url);
            msg?.Invoke(m);
            if (request.Method == "POST")
            {
                using (var postData = request.PostData)
                {
                    if (postData != null)
                    {
                        var elements = postData.Elements;

                        var charSet = request.GetCharSet();

                        foreach (var element in elements)
                        {
                            if (element.Type == PostDataElementType.Bytes)
                            {
                                var body = element.GetBody(charSet);
                                msg?.Invoke(body);
                            }
                        }
                    }
                }
            }
            Uri url;
            if (Uri.TryCreate(request.Url, UriKind.Absolute, out url) == false)
            {
                //If we're unable to parse the Uri then cancel the request
                // avoid throwing any exceptions here as we're being called by unmanaged code
                return CefReturnValue.Cancel;
            }
            var extension = url.ToString().ToLower();
            if (request.ResourceType == ResourceType.Image || extension.EndsWith(".jpg") || extension.EndsWith(".png") || extension.EndsWith(".gif") || extension.EndsWith(".jpeg"))
            {
                Console.WriteLine(request.Url);

            }

            return CefReturnValue.Continue;
        }

 

如图所示所有的图片都出来了。嘎嘎 一个图标都不放过