/// <summary>
/// 递归实现页面静态化功能
/// </summary>
/// <param name="urlString">要访问的页面链接地址</param>
public void SaveHtmlCode(string urlString)
{
if (htmlCreatedList.Contains(urlString))
{
return;
}
string htmlCode = GetHtmlCodeFromUrl(urlString);
string htmlPath = GetHtmlPathFromUrl(urlString);
string direcHtmlPath = Path.GetDirectoryName(htmlPath);
if (!Directory.Exists(direcHtmlPath))
{
Directory.CreateDirectory(direcHtmlPath);
}
File.WriteAllText(htmlPath, htmlCode);
htmlCreatedList.Add(urlString);
ArrayList urlList = GetUrlLinkFromHtmlCode(htmlCode);
string urlTemp = string.Empty;
foreach (string url in urlList)
{
Uri uri = new Uri(urlString);
urlTemp = url;
urlTemp = Regex.Replace(urlTemp, "href\\s*=\\s*", "");
urlTemp = urlTemp.Replace("\"", "");
urlTemp = urlTemp.Replace("\\", "/");
urlTemp = HtmlPageHelper.GetUrlRoot(HttpContext.Current.Request.Url) + urlTemp;
SaveHtmlCode(urlTemp);
}
}
public override void Write(byte[] buffer, int offset, int count)
{
if (!context.Response.StatusCode.Equals(200))
{
return;
}
inner.Write(buffer, offset, count);
//if (!context.HttpContext.Request.FilePath.ToLower().StartsWith("/admin"))
//当前请求不是后台管理；并且返回客户端是html才生成静态页面
if (!context.Request.FilePath.ToLower().StartsWith("/admin") && context.Response.ContentType.Equals("text/html"))
{
//静态页面保存路径信息
string htmlPath = HtmlPageHelper.GetHtmlPathFromUrl(context.Request.Url.AbsoluteUri);
string direcHtmlPath = Path.GetDirectoryName(htmlPath);
if (!Directory.Exists(direcHtmlPath))
{
Directory.CreateDirectory(direcHtmlPath);
}
//获取返回客户端的html代码，并进行压缩处理
string htmlCode = System.Text.Encoding.UTF8.GetString(buffer);
string isZipHtml = System.Configuration.ConfigurationManager.AppSettings["IsCompressed"];
//如果“IsCompressed”的值为空或0，则表示不压缩
if (!string.IsNullOrEmpty(isZipHtml) && !isZipHtml.Equals(0))
{
htmlCode = Regex.Replace(htmlCode, "^\\s*", string.Empty, RegexOptions.Compiled | RegexOptions.Multiline);
htmlCode = Regex.Replace(htmlCode, "\\r\\n", string.Empty, RegexOptions.Compiled | RegexOptions.Multiline);
htmlCode = Regex.Replace(htmlCode, "<!--*.*?-->", string.Empty, RegexOptions.Compiled | RegexOptions.Multiline);
}
//保存文件，这里不能用File.WriteAllText
File.AppendAllText(htmlPath, htmlCode);
}
}
private void Application_BeginRequest(Object source, EventArgs e)
{
HttpApplication application = (HttpApplication)source;
HttpContext context = application.Context;
string filePath = context.Request.FilePath;
string fileExtension = VirtualPathUtility.GetExtension(filePath);
bool isFile = !string.IsNullOrEmpty(fileExtension);
//如果当前请求的不是资源文件、不是后台管理、请求中没有表单信息、静态页面存在，则返回静态页面
if ((!isFile || fileExtension == ".zeje") && !filePath.ToLower().StartsWith("/admin") && context.Request.Form.Count.Equals(0))
{
string htmlPath = HtmlPageHelper.GetHtmlPathFromUrl(context.Request.Url.AbsoluteUri);
if (File.Exists(htmlPath))
{
context.Response.WriteFile(htmlPath);
context.Response.End();
}
else
{
context.Response.Filter = new HttpResponseFilterWrapper(context.Response.Filter, context);
}
}
}
