Question

我正在尝试使用MvcPluginFramework。我知道它已经过时了，但我认为会对它进行升级。但是，当我尝试将插件渲染到视图中时，我在代码中遇到了一个问题，我得到以下异常：

$ exception＆＃34;该组合产生了一个组合错误。根本原因如下。查看CompositionException.Errors属性以获取更多详细信息。\ r \ n \ r \ n1）无法创建类型为＆＃39; PaypalPlugin.PayPalPlugin＆＃39;的实例。因为无法选择构造函数进行构造。确保该类型具有默认构造函数或标记有＆＃39; System.ComponentModel.Composition.ImportingConstructorAttribute＆＃39;。\ r \ n \ r \ n的结果：无法激活部件＆＃39; PaypalPlugin .PayPalPlugin＆＃39;。\ r \ nElement：PaypalPlugin.PayPalPlugin - ＆gt; PaypalPlugin.PayPalPlugin - ＆gt; DirectoryCatalog（路径= \＆＃34; C：\ Projects \ solitudeec2core \ solitudeeccore \ solitude.admin \ solitude.admin \ bin \＆＃34;）\ r \ n \ r \ n导致：无法导出＆＃39; PaypalPlugin.PayPalPlugin（ContractName = \＆＃34; Kusog.Mvc.IMvcPlugin \＆＃34;）＆＃39;来自部分＆＃39; PaypalPlugin.PayPalPlugin＆＃39;。\ r \ nElement：PaypalPlugin.PayPalPlugin（ContractName = \＆＃34; Kusog.Mvc.IMvcPlugin \＆＃34;） - ＆gt; PaypalPlugin.PayPalPlugin - ＆gt; DirectoryCatalog（路径= \＆＃34; C：\ Projects \ solitudeec2core \ solitudeeccore \ solitude.admin \ solitude.admin \ bin \＆＃34;）\ r \ n＆＃34; System.ComponentModel.Composition.CompositionException

我正在尝试从控制器PayPal渲染html，所以我使用了以下html帮助器标签，它会在这段代码上崩溃。

/// <summary>
/// Uses MEF to get all plugins defined and get them setup for use in the site.
/// </summary>
/// <remarks>This code does not attempt to only call SetupExtensions once for a given plugin.  
/// Each time this method is called, all plugins found will have their SetupExtensions method
/// called.  This is intended to be called once during application startup.</remarks>
protected virtual void refreshPlugins()
{
    try
    {
        m_pluginsContainer = new CompositionContainer(addMefCatalogs(new AggregateCatalog()));
        m_pluginsContainer.ComposeParts(this);
    }
    catch (CompositionException compositionException)
    {
        Console.WriteLine(compositionException.ToString());
    }
    catch (ReflectionTypeLoadException ex)
    {
        StringBuilder sb = new StringBuilder();
        foreach (Exception exSub in ex.LoaderExceptions)
        {
            sb.AppendLine(exSub.Message);
            if (exSub is FileNotFoundException)
            {
                FileNotFoundException exFileNotFound = exSub as FileNotFoundException;
                if (!string.IsNullOrEmpty(exFileNotFound.FusionLog))
                {
                    sb.AppendLine("Fusion Log:");
                    sb.AppendLine(exFileNotFound.FusionLog);
                }
            }
            sb.AppendLine();
        }
        string errorMessage = sb.ToString();
        //Display or log the error based on your application.
    }
    foreach (Lazy<IMvcPlugin, IMvcPluginData> plugin in m_plugins)
    {
        plugin.Value.SetupExtensions(this);
    }
}

编辑2

以下是显示插件初始化的结构

using Kusog.Mvc;
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.Mvc;

namespace PayPal.Controllers
{

    [DynamicActionFilter]
    public class PayPalController : Controller
    {

        public ActionResult Index()
        {
            return View("~/Views/Paypal/Index.cshtml");
        }



        public ActionResult PageFooter()
        {
            return Content("");
        }
    }
}

编辑3

PayPalPlugin.cs 

{
    /// <summary>
    /// Provides basic plugin functionality to show how to set it up.
    /// </summary>
    /// <remarks>This plugin inherits from DemoAppPlugin rather than BaseMvcPlugin because it wants to use extended functionality made available in DemoAppPlugin, such as adding menu items.
    /// If a plugin doesn't need to do things other than what is provided in BaseMvcPlugin, it should inherit from that to be usable in other implementations of the plugin framework.</remarks>
    [Export(typeof(Kusog.Mvc.IMvcPlugin))]
    [MvcPluginMetadata("PayPalPlugin", null, "PayPalPlugin", "This is a plugin to be used for Solutide E-Commerce Platform to allow Paypal.")]
    public class PayPalPlugin : DemoAppPlugin
    {
        public override void SetupExtensions(IMvcPluginApplication app)
        {
            base.SetupExtensions(app);

            addLocalCss("/Content/simple.css");
            addFooterScript("ksgSimple", "/Scripts/ksgSimple.js", null);
            AddActionFilter("Index", "PayPalPlugin", new ActionExtension("Index", "PayPal"));

            AddActionFilter("Metatags", "PluginDemo", new ActionExtension("Metatags", "Simple"));

        }
    }

组合物产生单一组成误差

0 个答案: