MVC視圖引擎最佳化

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請首先看如下內容：

未找到視圖"Index"或其母片視圖，或沒有視圖引擎支援搜尋的位置。搜尋了以下位置: 
~/Views/Home/Index.aspx
~/Views/Home/Index.ascx
~/Views/Shared/Index.aspx
~/Views/Shared/Index.ascx
~/Views/Home/Index.cshtml
~/Views/Home/Index.vbhtml
~/Views/Shared/Index.cshtml
~/Views/Shared/Index.vbhtml

 

 

著作權歸二師弟和部落格園共同所有，歡迎轉載和分享知識。轉載請註明出處！

Mvc4和mvc3是這樣尋找的，其中*.aspx和*.ascx以及*.vbhtml都是我們不需要的。

我們可以想象，這裡不管採用什麼辦法，肯定至少4次訪問檔案系統並判斷對應檔案是否存在，才會找到我們的index.cshtml，這樣的開銷小型應用可以忽略，如果並發量千萬級（總之很大，具體未測）肯定對效能有一定影響。

怎麼避免，不要去尋找*.aspx,*.ascx以及*.vbhtml?

經過幾番折騰，我們成功找到瞭解決辦法:

Mvc中有兩個視圖引擎,webformengine和razorengine,解決辦法就是，確定不使用webform的情況下，移除webformengine,然後移除razorengine並添加改寫了的razorengine。

 

移除的代碼在global.ascx.cs的application_start方法中這樣寫：

ViewEngines.Engines.Clear();

重寫razorengine的方法：

public class Engine : RazorViewEngine

{

public Engine( )

        {

            base.AreaViewLocationFormats = new string[]

            {

                "~/Areas/{2}/Views/{1}/{0}.cshtml",

                "~/Areas/{2}/Views/Shared/{0}.cshtml",

            };

            base.AreaMasterLocationFormats = new string[]

            {

                "~/Areas/{2}/Views/{1}/{0}.cshtml",

                "~/Areas/{2}/Views/Shared/{0}.cshtml",

                

            };

            base.AreaPartialViewLocationFormats = new string[]

            {

                "~/Areas/{2}/Views/{1}/{0}.cshtml",

                "~/Areas/{2}/Views/Shared/{0}.cshtml",

            };

            base.ViewLocationFormats = new string[]

            {

                "~/Views/{1}/{0}.cshtml",

                "~/Views/Shared/{0}.cshtml",

            };

            base.MasterLocationFormats = new string[]

            {

                "~/Views/{1}/{0}.cshtml",

                "~/Views/Shared/{0}.cshtml",

            };

            base.PartialViewLocationFormats = new string[]

            {

                "~/Views/{1}/{0}.cshtml",

                "~/Views/Shared/{0}.cshtml",

            };

            base.FileExtensions = new string[]

            {

                "cshtml",

            };

        }

}

然後添加改寫的視圖引擎：

ViewEngines.Engines.Add(new Engine());

著作權歸二師弟和部落格園共同所有，歡迎轉載和分享知識。轉載請註明出處！

最終application_start方法如下：

MVC視圖引擎最佳化