asp.net-mvc – MVC捆绑客户端缓存

不幸的是没有办法。你可以在捆绑的内部实现中找到原因。在BundleHandler类中，ProcessRequest调用ProcessRequest，Bundle类的内部方法，它在HttpContext.Response.Write之前调用SetHeaders。因此，客户端缓存在响应写入之前设置为一年。

注意：BundleHandler是一个内部密封类：internal sealed class BundleHandler：IHttpHandler

在BundleHandler类中：

public void ProcessRequest(HttpContext context)
{
    if (context == null)
    {
        throw new ArgumentNullException("context");
    }
    context.Response.Clear();
    BundleContext context2 = new BundleContext(new HttpContextWrapper(context),BundleTable.Bundles,this.BundleVirtualPath);
    if (!Bundle.GetInstrumentationMode(context2.HttpContext) && !string.IsNullOrEmpty(context.Request.Headers["If-Modified-Since"]))
    {
        context.Response.StatusCode = 304;
    }
    else
    {
        this.RequestBundle.ProcessRequest(context2);
    }
}

在Bundle类中：

internal void ProcessRequest(BundleContext context)
{
    context.EnableInstrumentation = GetInstrumentationMode(context.HttpContext);
    BundleResponse bundleResponse = this.GetBundleResponse(context);
    SetHeaders(bundleResponse,context);
    context.HttpContext.Response.Write(bundleResponse.Content);
}

private static void SetHeaders(BundleResponse bundle,BundleContext context)
{
    if (bundle.ContentType != null)
    {
        context.HttpContext.Response.ContentType = bundle.ContentType;
    }
    if (!context.EnableInstrumentation)
    {
        HttpCachePolicyBase cache = context.HttpContext.Response.Cache;
        cache.SetCacheability(bundle.Cacheability);
        cache.SetOmitVaryStar(true);
        cache.SetExpires(DateTime.Now.AddYears(1));
        cache.SetValidUntilExpires(true);
        cache.SetLastModified(DateTime.Now);
        cache.VaryByHeaders["User-Agent"] = true;
    }
}