如何使用OWIN中间件重写版本化的URL以请求静态文件？

Question

例如,我在服务器上有一个文件/Content/static/home.html.我希望能够/Content/v/1.0.0.0/static/home.html(对于版本控制)发出请求,并让它重写url,以便它使用OWIN中间件访问正确URL的文件.

我目前正在使用URL重写模块(IIS扩展),但我想让它在OWIN管道中工作.

Answer 1

我找到了使用Microsoft.Owin.StaticFilesnuget包的解决方案:

首先确保它在您的Web配置中,以便将静态文件请求发送到OWIN:

<system.webServer>
    ...
    <modules runAllManagedModulesForAllRequests="true"></modules>
    ...
</system.webServer>

然后在您的启动配置方法中,添加以下代码:

// app is your IAppBuilder
app.Use(typeof(MiddlewareUrlRewriter));
app.UseStaticFiles();
app.UseStageMarker(PipelineStage.MapHandler);

这是MiddlewareUrlRewriter:

public class MiddlewareUrlRewriter : OwinMiddleware
{
    private static readonly PathString ContentVersioningUrlSegments = PathString.FromUriComponent("/content/v");

    public MiddlewareUrlRewriter(OwinMiddleware next)
        : base(next)
    {
    }

    public override async Task Invoke(IOwinContext context)
    {
        PathString remainingPath;
        if (context.Request.Path.StartsWithSegments(ContentVersioningUrlSegments, out remainingPath) && remainingPath.HasValue && remainingPath.Value.Length > 1)
        {
            context.Request.Path = new PathString("/Content" + remainingPath.Value.Substring(remainingPath.Value.IndexOf('/', 1)));
        }

        await Next.Invoke(context);
    }
}

例如,这将允许GET请求/Content/v/1.0.0.0/static/home.html检索文件/Content/static/home.html.

更新:app.UseStageMarker(PipelineStage.MapHandler);在其他app.Use方法之后 添加,因为它需要使其工作.http://katanaproject.codeplex.com/wikipage?title=Static%20Files%20on%20IIS