feat: 页面静态化

.gitignore

@@ -215,3 +215,4 @@ _Pvt_Extensions/
 ModelManifest.xml
 *.db3
 /Blog/Upload
+Blog/html/

Blog/Areas/backmgr/Controllers/ArticleController.cs

@@ -4,6 +4,7 @@
 using Blog.Service;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Web;
 using System.Web.Mvc;
@@ -107,6 +108,7 @@ public JsonResult Add(string articleId, string title, string content, List<int>
                                 _articleLabelService.Add(int.Parse(articleId), item);
                             }
                         }
+                        RemoveHtmlFile(urlTitle);
                     }
                     catch (Exception ex)
                     {
@@ -154,6 +156,16 @@ private void AddValidate(string articleId, string title, string content, string
             //    throw new ValidateException(102, $"标题请在50字内");
         }
 
+        private void RemoveHtmlFile(string urlTitle)
+        {
+            string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "html", "Home-ViewArticle");
+            string fileName = Path.Combine(path, urlTitle + ".html");
+            if (System.IO.File.Exists(fileName))
+            {
+                System.IO.File.Delete(fileName);
+            }
+        }
+
         [HttpPost]
         [ValidateAntiForgeryToken]
         public ActionResult Del(int? id)

Blog/Blog.csproj

@@ -1055,6 +1055,7 @@
     <Compile Include="Controllers\TestController.cs" />
     <Compile Include="Controllers\UtilController.cs" />
     <Compile Include="Controllers\XSSController.cs" />
+    <Compile Include="Filters\StaticHtmlAttribute.cs" />
     <Compile Include="Filters\ExceptionFilter.cs" />
     <Compile Include="Filters\UserAuthorizeAttribute.cs" />
     <Compile Include="Global.asax.cs">

Blog/Controllers/HomeController.cs

@@ -1,9 +1,11 @@
-using Blog.Models;
+using Blog.Filters;
+using Blog.Models;
 using Blog.Repository;
 using Blog.Service;
 using PagedList;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Web;
 using System.Web.Mvc;
@@ -43,6 +45,7 @@ public ActionResult Detail(string id)
             return View(model);
         }
 
+        [StaticHtml]
         public ActionResult ViewArticle(string urlTitle)
         {
             if (string.IsNullOrEmpty(urlTitle))

Blog/Filters/StaticHtmlAttribute.cs

@@ -0,0 +1,110 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Web;
+using System.Web.Mvc;
+using System.IO;
+using System.Web.UI;
+
+namespace Blog.Filters
+{
+    public class StaticHtmlAttribute : ActionFilterAttribute
+    {
+        //用于保存渲染后的html文本
+        static StringBuilder sb;
+        //这几个Writer照着写就行了
+        static StringWriter sw;
+        static HtmlTextWriter hw;
+        static TextWriter tw;
+        //自定义的静态页面的后缀名
+        static string ext = ".html";
+        //静态页面的绝对路径(包括后缀名)
+        string fileName = null;
+        ///静态页面的绝对路径(不包括后缀名)
+        static string path = null;
+        //静态文件是否存在
+        bool FileExists = false;
+
+        /// <summary>
+        /// Action执行前，判断当前页面是否已经被静态化（Views路径下是否存在html文件）
+        /// 如果存在静态文件则直接设置filterContext的result，即返回html作为结果，而不执行Action中代码
+        /// 如果不存在静态页面文件，则不设置filterContext的result，此时将会执行Action中的代码
+        /// </summary>
+        /// <param name="filterContext"></param>
+        public override void OnActionExecuting(ActionExecutingContext filterContext)
+        {
+            //根据controller和action信息
+            string controller = filterContext.RouteData.Values["controller"].ToString();
+            string action = filterContext.RouteData.Values["action"].ToString();
+            string urlTitle = filterContext.RouteData.Values["urlTitle"].ToString();
+            // object id = null;
+            //路由中是否包含可选参数id，如果有，则在文件名也要体现
+            //if (!filterContext.RouteData.Values.TryGetValue("urlTitle", out id))
+            //{
+            //    path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Views", controller, action);
+            //    fileName = string.Format("{0}{1}", path, ext);
+            //}
+            //else
+            //{
+            //    path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Views", controller, action);
+            //    fileName = string.Format("{0}{1}{2}", path, id.ToString(), ext);
+            //}
+
+            path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "html", controller + "-" + action);
+            if (!Directory.Exists(path))
+            {
+                Directory.CreateDirectory(path);
+            }
+            fileName = Path.Combine(path, urlTitle + ext);
+
+
+            //拼装后缀名
+
+            FileExists = File.Exists(fileName);
+            //如果文件存在，直接返回结果
+            if (FileExists)
+            {
+                filterContext.Result = new FileContentResult(File.ReadAllBytes(fileName), "text/html; charset=utf-8");
+            }
+        }
+        /// <summary>
+        /// 执行完Action后，但渲染页面前执行此处
+        /// 渲染页面的意思是将cshtml中的后台代码，翻译为前台代码
+        /// 
+        /// </summary>
+        /// <param name="filterContext"></param>
+        public override void OnResultExecuting(ResultExecutingContext filterContext)
+        {
+
+            if (!FileExists)
+            {
+                //保存html
+                sb = new StringBuilder();
+                //两个writer
+                sw = new StringWriter(sb);
+                hw = new HtmlTextWriter(sw);
+                //记住Response中原本输出流，用于返回本次请求的html，与下一句配合使用
+                //在渲染结束后，向tw内写入html内容
+                tw = filterContext.RequestContext.HttpContext.Response.Output;
+                //过滤器自己输出流，用于获取渲染后的html内容
+                filterContext.RequestContext.HttpContext.Response.Output = hw;
+            }
+
+        }
+        public override void OnResultExecuted(ResultExecutedContext filterContext)
+        {
+            //如果是静态文件不存在
+            if (!FileExists)
+            {
+                //获取渲染后的html文本
+                string res = sb.ToString();
+                //将文本写入到静态文件中
+                new Action(() => File.WriteAllText(fileName, res)).BeginInvoke(null, null);
+                //向Response的输出流中写入本次请求的html
+                tw.Write(sb.ToString());
+            }
+        }
+    }
+
+}