/// <summary>
/// 初始化插件。
/// </summary>
/// <param name="pluginDescriptor">插件描述</param>
private static void Initialize(PluginDescriptor pluginDescriptor)
{
//使用插件名称做为字典 KEY。
string key = pluginDescriptor.Plugin.Name;
//不存在时才进行初始化。
if (!_plugins.ContainsKey(key))
{
//初始化。
pluginDescriptor.Plugin.Initialize();
//增加到字典。
_plugins.Add(key, pluginDescriptor);
}
}
/// <summary>
/// 加载插件。
/// </summary>
public static IEnumerable<PluginDescriptor> Load()
{
List<PluginDescriptor> plugins = new List<PluginDescriptor>();
////程序集复制到临时目录。
//FileCopyTo();
//IEnumerable<Assembly> assemblies = null;
//////加载 bin 目录下的所有程序集。
////assemblies = AppDomain.CurrentDomain.GetAssemblies();
////plugins.AddRange(GetAssemblies(assemblies));
////加载临时目录下的所有程序集。
//assemblies = TempPluginFolder.GetFiles("*.dll", SearchOption.AllDirectories).Select(x => Assembly.LoadFile(x.FullName));
////assemblies = TempPluginFolder.GetFiles("Weikeren.GroupBuy.Sell.dll", SearchOption.AllDirectories).Select(x => Assembly.LoadFile(x.FullName));
//plugins.AddRange(GetAssemblies(assemblies));
//return plugins;
try
{
string pluginAssemblyMappingPath = System.IO.Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, "PluginAssemblyMapping.xml");
var pluginList = XElement.Load(pluginAssemblyMappingPath);
var mappings = from m
in pluginList.Elements()
select new PluginAssemblyMapping()
{
PluginPath = m.Element("PluginPath").Value,
AssemblyName = m.Element("AssemblyName").Value,
InimplementIPlugClassName = m.Element("ImplementIPlugClassName").Value
};
var list = mappings.ToList();
if (list != null && list.Count > 0)
{
//var context = HttpContext.Current != null ? new HttpContextWrapper(HttpContext.Current) as HttpContextBase : (new FakeHttpContext("~/") as HttpContextBase);
foreach (var item in list)
{
//string path = context.Current.Server.MapPath(string.Format("{0}/{1}", item.PluginPath.Trim('/'), item.AssemblyName));
string path = System.IO.Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, string.Format("{0}\\{1}", item.PluginPath.TrimStart('~').Trim('/').Trim('\\'), item.AssemblyName));
//var assembly = Assembly.LoadFile(path); //此方法不能释放dll，因为dll不能被覆盖
var assembly = loadAssembly(path);
var plugin = (IPlugin)assembly.CreateInstance(item.InimplementIPlugClassName);
if (plugin != null)
{
var desc = new PluginDescriptor(plugin, assembly, assembly.GetTypes());
plugins.Add(desc);
}
}
}
return plugins;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("加载PluginAssemblyMapping.xml失败。");
return plugins;
}
}
/// <summary>
/// 卸载。
/// </summary>
public static void Unload(PluginDescriptor pluginDescriptor)
{
pluginDescriptor.Plugin.Unload();
_plugins.Remove(pluginDescriptor.Plugin.ToString());
}