asp.net-mvc – 渲染位于远程服务器上的部分视图

使用RemotePartial方法扩展HtmlHelper：

public static class HtmlExtensions
{
    private const string _remotePartialsPath = "~/Views/_RemotePartialsCache/";
    private static readonly IDictionary<string,string> _remotePartialsMappingCache = new Dictionary<string,string>(StringComparer.InvariantCultureIgnoreCase);

    public static MvcHtmlString RemotePartial(this HtmlHelper helper,string partialUrl,object model = null)
    {
        string cachedPath;

        // return cached copy if exists
        if (_remotePartialsMappingCache.TryGetValue(partialUrl,out cachedPath))
            return helper.Partial(_remotePartialsPath + cachedPath,model);

        // download remote data
        var webClient = new WebClient();
        var partialUri = new Uri(partialUrl);
        var partialData = webClient.DownloadString(partialUrl);

        // save cached copy locally
        var partialLocalName = Path.ChangeExtension(partialUri.LocalPath.Replace('/','_'),"cshtml");
        var partialMappedPath = helper.ViewContext.RequestContext.HttpContext.Server.MapPath(_remotePartialsPath + partialLocalName);
        File.WriteAllText(partialMappedPath,partialData);

        // save to cache
        _remotePartialsMappingCache[partialUrl] = partialLocalName;

        return helper.Partial(_remotePartialsPath + partialLocalName,model);
    }
}

然后使用如下：

@Html.RemotePartial("http://localhost/PartialServer/view/calculator.cshtml")

您也可以使用上面的实现替换原始的Partial方法(只有在传递的路径是远程URL时才会起作用),但不建议这样做.