我可以运行ASPX并grep结果而不发出HTTP请求吗?

例子:

public class MyAspNetHost : System.MarshalByRefObject
{
    public void ProcessRequest(string page)
    {
        var request = new System.Web.Hosting.SimpleWorkerRequest
            (page,               // the page being requested
             null,               // query - none in this case
             System.Console.Out  // output - any TextWriter will do
            );

        // this will emit the page output to Console.Out
        System.Web.HttpRuntime.ProcessRequest(request);
    }

    public AppDomain GetAppDomain()
    {
        return System.Threading.Thread.GetDomain();
    }
}


public class Example
{   
    public void Run(IEnumerable<String> pages)
    {
        // ASPNET looks for assemblies - including the assembbly
        // that contains any custom ASPNET host - in the bin\
        // subdirectory of the physical directory that backs the
        // ASPNET Host.  Because we are going to use the current
        // working directory as the physical backing directory for
        // the ASPNET host, we need to ensure there's a bin
        // subdirectory present.

        bool cleanBin = false;
        if (!Directory.Exists("bin"))
        {
            cleanBin = true;
            Directory.CreateDirectory("bin");
        }

        // Now, ensure that the assembly containing the custom host is
        // present in that bin directory.  The assembly containing the
        // custom host is actually *this* assembly.  

        var a = System.Reflection.Assembly.GetExecutingAssembly();
        string destfile= Path.Combine("bin", Path.GetFileName(a.Location));
        File.Copy(a.Location, destfile, true); 

        host =
            (MyAspNetHost) System.Web.Hosting.ApplicationHost.CreateApplicationHost
            ( typeof(MyAspNetHost),
              "/foo",   // virtual dir - can be anything
              System.IO.Directory.GetCurrentDirectory() // physical dir
              );

        // process each page
        foreach (string page in pages)
            host.ProcessRequest(page);
    }
}

如果要清理bin目录,必须先卸载AppDomain。你可以这样做:

    private ManualResetEvent aspNetHostIsUnloaded;

    private void HostedDomainHasBeenUnloaded(object source, System.EventArgs e)
    {
        // cannot clean bin dir here.  The AppDomain is not yet gone.
        aspNetHostIsUnloaded.Set();
    }

    private Run(IEnumerable<String> pages)
    {
        try 
        {
            ....code from above ....
        }
        finally
        {
            if (host!= null)
            {
                aspNetHostIsUnloaded = new ManualResetEvent(false);

                host.GetAppDomain().DomainUnload += this.HostedDomainHasBeenUnloaded;

                AppDomain.Unload(host.GetAppDomain());

                // wait for it to unload
                aspNetHostIsUnloaded.WaitOne();

                // optionally remove the bin directory
                if (cleanBin)
                {
                    Directory.Delete("bin", true);
                }

                aspNetHostIsUnloaded.Close();
            }
        }
    }

在您的情况下,您可能希望修改自定义主机,以便每个页面的输出转到 StringWriter 而不是Console.Out,然后您可以执行Grep(或者更可能是使用 Regex )在那个输出上。您可能还想修改它,将所有输入数据作为querystring接受。要做到这一点,您需要格式化页面请求。

a good article on MSDN Magazine on this technique of hosting the ASPNET runtime

编辑2 :有一种更简单的方法来管理bin目录。只需创建一个名为bin的符号链接,指向“.”。然后,可以在调用AppDomain.Unload()之后删除符号链接,而无需等待。看起来像这样:

    public void Run(string[] pages)
    {
        bool cleanBin = false;
        MyAspNetHost host = null;
        try
        {
            // This creates a symlink.
            // ASPNET always looks for a bin\ directory for the privateBinPath of the AppDomain.
            // This will create the bin dir, pointing to the current dir.
            if (!Directory.Exists("bin"))
            {
                cleanBin = true;
                CreateSymbolicLink("bin", ".", 1);
            }

            host =
                (MyAspNetHost) System.Web.Hosting.ApplicationHost.CreateApplicationHost
                ( typeof(MyAspNetHost),
                  "/foo",   // virtual dir - can be anything
                  System.IO.Directory.GetCurrentDirectory() // physical dir
                  );

            foreach (string page in pages)
                host.ProcessRequest(page);
        }
        finally
        {
            // tell the host to unload
            if (host!= null)
            {
                AppDomain.Unload(host.GetAppDomain());

                if (cleanBin)
                {
                    // remove symlink - can do without waiting for AppDomain unload
                    Directory.Delete("bin");
                }
            }
        }
    } 

这样就不需要ManualResetEvent、复制文件、同步等。它假定自定义ASPNet主机的程序集以及运行的ASPX页所需的所有程序集都包含在当前工作目录中。

这听起来像是一个非常类似的问题,即在服务器上生成HTML电子邮件。这里有一些答案可以做到这一点(对于MVC):

ASP.NET MVC: How to send an html email using a controller?