Question

我需要将一堆文件合并到一个“文件”中。但我还需要其中一些文件是动态的，所以我有动作返回动态资源。 E.g。

[OutputCache(VaryByParam = "culture", Duration = 3600)]
public ActionResult Settings(string culture)
{
    CultureInfo cultureInfo;
    try
    {
        cultureInfo = new CultureInfo(culture);
    }
    catch
    {
        cultureInfo = Configuration.Current.DefaultCulture;
    }
    var sb = new StringBuilder();
    sb.AppendFormat("Cms.Settings.Language = '{0}';", cultureInfo.TwoLetterISOLanguageName);

    sb.AppendFormat("Cms.Settings.DayNames = [{0}];", string.Join(",", cultureInfo.DateTimeFormat.DayNames.Select(d => "\"" + d + "\"")));
    sb.AppendFormat("Cms.Settings.ShortDayNames = [{0}];", string.Join(",", cultureInfo.DateTimeFormat.AbbreviatedDayNames.Select(d => "\"" + d + "\"")));
    sb.AppendFormat("Cms.Settings.FirstDay = {0};", (int)cultureInfo.DateTimeFormat.FirstDayOfWeek);

    sb.AppendFormat("Cms.Settings.ShortMonthNames = [{0}];", string.Join(",", cultureInfo.DateTimeFormat.AbbreviatedMonthNames.Take(12).Select(m => "\"" + m + "\"")));

    var languages = new[]{cultureInfo.TwoLetterISOLanguageName};
    var keys = translator.GetKeys(languages[0]);
    foreach (var key in keys)
    {
        sb.AppendFormat("Cms.Settings.Texts['{0}'] = '{1}';", key, translator.GetText(key, key, languages));
    }

    // TODO: from settings
    sb.AppendFormat("Cms.Settings.IconDir = '{0}';", VirtualPathUtility.ToAbsolute("~/img/icons/"));
    return JavaScript(sb.ToString());
}

我想要做的是将这些物理文件和ActionResults组合到一个“文件”中。我已经做了这个动作来进行组合，但我不知道通过路径获取动作输出的简单方法。

// files is like "jquery.js,/js/settings?culture=fi,jquery-ui.js,..."
[OutputCache(VaryByParam = "files", Duration=3600)]
public ActionResult Bundle(string files)
{
    var paths = files.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
    var sb = new StringBuilder();
    foreach (var path in paths)
    {
        appendFile(sb, path);
    }
    return JavaScript(sb.ToString());
}
private void appendFile(StringBuilder sb, string path)
{
    if (/* path is file on disk */)
    {
        var filename = Server.MapPath(path);
        if (!System.IO.File.Exists(filename))
        {
            return;
        }
        sb.Append(System.IO.File.ReadAllText(filename));
    }
    else if(/* is action */)
    {
        // how do I get the output?
        var output = getActionOutput(path);
        sb.Append(output);
    }
}

我尝试的另一个选项是将VirtualPathProvider用于动态文件，但由于某些原因，没有为磁盘上没有的文件调用“GetFile”。

public class JsVirtualPathProvider : VirtualPathProvider
{
    public override bool FileExists(string virtualPath)
    {
        if (virtualPath == "~/js/settings/fi.js")
        {
            // this was called
            return true;
        }
        return base.FileExists(virtualPath);
    }
    public override VirtualFile GetFile(string virtualPath)
    {
        // never called for this "file"?
        if (virtualPath == "~/js/settings/fi.js")
        {
                return new JsFile(virtualPath, "Cms.Settings.Foo = 'Bar';");
        }
        return base.GetFile(virtualPath);
    }

    class JsFile : VirtualFile
    {
        private readonly string content;
        public JsFile(string virtualPath, string content) : base(virtualPath)
        {
                this.content = content;
        }
        public override Stream Open()
        {
                return new MemoryStream(Encoding.UTF8.GetBytes(content), false);
        }
    }
}

将物理文件与动态/虚拟文件组合起来的最简单方法是什么？

Answer 1

我使用以下代码获得了操作的输出。

var url = string.Format("{0}://{1}", Request.Url.Scheme, Request.Url.Host);
if (Request.Url.Port != 80)
{
    url += ":" + Request.Url.Port;
}
url += path;
var writer = new StringWriter(sb);
var httpContext = new HttpContext(new HttpRequest("", url, ""), new HttpResponse(writer));
HttpContextBase httpContextBase = new HttpContextWrapper(httpContext);
var routeData = System.Web.Routing.RouteTable.Routes.GetRouteData(httpContextBase);
var handler = RouteData.RouteHandler.GetHttpHandler(new RequestContext(httpContextBase,routeData));
handler.ProcessRequest(httpContext);

由于某种原因，被调用操作（设置）中的QueryStringValueProvider具有调用操作（Bundle）的值，因此我将路径更改为/js/settings/{culture}（之前为/js/settings?culture={culture}）

Answer 2

else if(/* is action */)
{
    // how do I get the output?

    // You need to send an HTTP request (for example using WebClient) 
    // to fetch the result of the execution of this action
    ...
}

将物理文件和动态文件合并到一个文件中

2 个答案: