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将Asp.net mvc整合进现有Asp.net webform项目

 2009-11-03 16:44:32 来源:WEB开发网   
核心提示:本文将实现在asp.net webform中开发asp.net mvc,并部署在网络上的虚拟主机上首先在我们的项目中的bin目录下拷贝三个DLL文件,相信你已经知道是哪三个文件了1.System.Web.Mvc.dllpath:C:\PRogram Files\Microsoft ASP.NET\ASP.NET MVC
本文将实现在asp.net webform中开发asp.net mvc,并部署在网络上的虚拟主机上

首先在我们的项目中的bin目录下拷贝三个DLL文件,相信你已经知道是哪三个文件了

1.System.Web.Mvc.dll     path:C:\PRogram Files\Microsoft ASP.NET\ASP.NET MVC 2.0\Assemblies

2.System.Web.Routing    path:C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5

3.System.Web.Abstractions.dll path:同上

如果安装了.net 3.5 sp1 System.Web.Routing则可以不用拷贝

注意一定要引用这三个文件

但我们全部拷贝方便一点,我们先跳过创建global.asax,我们将现有项目做为View,那么我们需要创建

Controller和Model,我们创建的项目(类库)分别为Sonven.Compositeaspnetmvc.Controllers和

Sonven.CompositeAspNetMvc.Models,好了Asp.net mvc的文件组织就差不多了,现在开始配置,

最关键的是要在Web.Config里面添加一个模块



<system.web>
    <httpModules>
      <add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule"/>
   </httpModules>

</system.web>

最好加上System.Web.Routing程序集密匙,上面是个错误的示范,但这样也可以运行哈

我们现在在我们的项目中添加一个文件夹和View文件,如果你试图将所有的View都放在一个Views文件夹下的话可以略过

实现自己的视图引擎,视图引擎代码如下



Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Web;
using System.Web.Mvc;
using System.IO;
using System.Text.RegularExpressions;

namespace Sonven.CompositeAspNetMvc.ViewEngine
{
  public class ViewEngine:VirtualPathProviderViewEngine
  {
    private static IList<string> _partialViewLocationFormats;
    private static IList<string> _viewLocationFormats;
    private static IList<string> _areaLocationFormats;
    private bool isTrace;

    static ViewEngine()
    {
      //初始化文件位置
      _partialViewLocationFormats = new List<string>();
      _viewLocationFormats = new List<string>();
      _areaLocationFormats = new List<string>();
      //Shared文件夹为存放公告usercontrol和masterpage的地方
      _partialViewLocationFormats.Add("~/Shared/{0}.ascx");

      ExploreDirectories(new DirectoryInfo(HttpContext.Current.Server.MapPath("~/")));
    }
    public ViewEngine()
    {
      this.MasterLocationFormats =new string[]{"~/{0}.master","~/{1}/{0}.master","~/masters/{0}.master"};
      this.PartialViewLocationFormats = _partialViewLocationFormats.ToArray();
      this.ViewLocationFormats = _viewLocationFormats.ToArray();
    }

    /// <summary>
    /// 设置是否追踪显示相关信息
    /// </summary>
    public bool IsTrace {set { isTrace = value; } }
    protected override IView CreatePartialView(ControllerContext controllerContext, string partialPath)
    {
      return new WebFormView(partialPath);
    }

    protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
    {
      if (isTrace)
      {
        StringBuilder sb = new StringBuilder(500);
        sb.Append("请求路径:" + viewPath + "<br />");
        foreach (string routeformat in _viewLocationFormats)
        {
          if (Regex.IsMatch(viewPath, routeformat.Replace("{0}", "(\\w+)")))
            sb.Append("<span style=\"color:red\">" + routeformat + "</span><br />");
          else sb.Append(routeformat.ToString() + "<br />");
        }
        sb.Append("<span style=\"color:black\">+</span> 未监视View的文件夹包含字符:");
        foreach (string nowatch in notWatchDirectories)
        {
          sb.Append(nowatch + ",");
        }
        HttpContext.Current.Response.Write("<div style=\"clear:both;border:solid 1px gold;background:#FEF8E0;" +
          "padding:5px 20px;font-size:14px;font-family:Tahoma;line-height:22px;margin:2px 0;color:#696969;\">" + sb.ToString() +
          "<br/><span style=\"color:silver\">注:红色表示匹配action路径,避免文件夹中存在同名view否则可能出现异常</span></div>");
      }
      return new WebFormView(viewPath, masterPath);
    }

    #region 添加匹配文件
    private static DirectoryInfo[] dirs;
    //获取根目录文件路径长度
    private static readonly int bootPathLength = HttpContext.Current.Server.MapPath("~/").Length;
    static void ExploreDirectories(DirectoryInfo dir)
    {
      RegisterViewPathFormats(dir.FullName);
      dirs = dir.GetDirectories();
      foreach (DirectoryInfo d in dirs)
      {
        ExploreDirectories(d);
      }
    }
    private static string path;
    //设置不监视的文件夹包含的字符
    private static string[] notWatchDirectories = { "app", "bin","Scripts","js","images","style","files","obj","Properties" };
    static void RegisterViewPathFormats(string filePath)
    {
      path = filePath.Substring(bootPathLength).Replace("\\", "/");
      foreach (string directoryName in notWatchDirectories)
      {
        if (Regex.IsMatch(path, "(\\w*)" + directoryName + "(\\w*)", RegexOptions.IgnoreCase)) return;
      }
      if (path == "") return ;//防止 /
      _partialViewLocationFormats.Add("~/" + path + "/{0}.ascx");
      _partialViewLocationFormats.Add("~/" + path + "/usercontrols/{0}.ascx");
      _viewLocationFormats.Add("~/" + path + "/{0}.aspx");
    }
    #endregion

    /*
    public void InsertViewLocation(string viewPath)
    {
      if (Regex.IsMatch(viewPath, @"~/(\w+)\{0\}\.aspx", RegexOptions.IgnoreCase))
        _viewLocationFormats.Add(viewPath);
      else throw new Exception("ViewLoction格式错误,必须以~/开头包含{0}占位符的aspx文件路径");
    }
    public void InsertPartialLocation(string partialPath)
    {
      if (Regex.IsMatch(partialPath, @"~/(\w+)\{0\}\.ascx", RegexOptions.IgnoreCase))
        _partialViewLocationFormats.Add(partialPath);
      else throw new Exception("PartialLoction格式错误,必须以~/开头包含{0}占位符ascx文件路径");
    }*/
  }
}

编译在sonven.ComposteAspnetMVC中的bin目录下的CompositeASpnetmvc.ViewEngine.dll

有了这个视图引擎可以不用把View放在一个Views文件夹下,不知道这样是不是错误的,但我比较喜欢自由的组织文件

接下来自己在Controllers项目中添加controller和在View中添加View,

完成了之后,我们最后来创建global.asax

其代码如下



Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using Sonven.CompositeAspNetMvc.ViewEngine;

namespace Sonven.CompositeAspNetMVC
{
  public class Global : System.Web.Httpapplication
  {
    private void RegisterRoutes(RouteCollection routes)
    {
      routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
      routes.MapRoute(
        "Default",             
        "{controller}/{action}/{id}",
        new { controller = "Home", action = "Index", id = "" });
    }
    void Application_Start(object sender, EventArgs e)
    {
      RegisterRoutes(RouteTable.Routes);
    }
  }
}

好了这下试试应该就可以了,但是我们将其部署到IIS发现访问如 /Home/Index会返回404 Error

解决办法如下




这下就可以了,但是当我们部署到网络上的虚拟主机上就遇到问题了,虚拟主机允许我们这样操作吗?

比较懂技术的虚拟主机技术员已经这样做了,但不幸的是很少会这样做的

那在虚拟主机上怎么用呢?答案是用asp.net能识别的扩展名,可以在路由上填加一些规则,其后缀为aspx

我们换另外一种,你只需要修改global.asax为如下代码:



Code
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using Sonven.CompositeAspNetMvc.ViewEngine;

namespace Sonven.CompositeAspNetMVC
{
  public class Global : System.Web.HttpApplication
  {
    private void RegisterRoutes(RouteCollection routes)
    {
      routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

      routes.MapRoute(
        "Default",                       //适用于虚拟主机,ext可以为ashx,aspx,ascx,asmx
        "{controller}.{ext}/{action}/{id}",
        new { controller = "Home", action = "Index", id = "" });
      routes.MapRoute(
        "Default2",                       //适用可以设置IIS或IIS版本为7.0以上
        "{controller}/{action}/{id}",
        new { controller = "Home", action = "Index", id = "" });
    }
    void Application_Start(object sender, EventArgs e)
    {
      RegisterRoutes(RouteTable.Routes);
    }
  }
}

你就可以用/home.aspx/Index这样的地址访问了,同时也可以用Home/Index(IIS经过配置)





您可以拷贝CompositeAspNetMvc.ViewEngine.dll在您的项目中并引用,对global.asax

的Application_Start方法中添加如下代码



ViewEngine engine = new ViewEngine();
      engine.IsTrace =true;       //是否显示请求信息,发布时候请删除此行
      ViewEngines.Engines.Add(engine);
你将看到下面的结果,engine.IsTrace =false; 既可以取消请求的文件匹配信息



好了,你现在可以试试了.欢迎拍砖,指正错误

Tags:Asp net mvc

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