private bool CreatePlugInConfiguration()
{
if (!File.Exists(_configFileName))
{
_log.Warn("文件[" + _configFileName + "]不存在！");
//不存在,需要自动创建XML文档,所有信息由自定制的特性得到,
XmlTextWriter emptyXmlDoc = new XmlTextWriter(_configFileName, Encoding.Default);
emptyXmlDoc.WriteStartDocument();
emptyXmlDoc.WriteStartElement("config");
emptyXmlDoc.WriteEndElement();
emptyXmlDoc.Flush();
emptyXmlDoc.Close();
}
//创建菜单的XML文档
XmlDocument plugInDoc = new XmlDocument();
try {
plugInDoc.Load(_configFileName);
}
catch {
_log.Error("载入菜单文档时出错！\n");
throw;
}
if (_plugInLoader == null)
{
throw new ArgumentNullException("plugInLoader", "指定的加载域为空");
}
//遍历指定路径的满足条件的插件
string[] paths = _assemblySetPath.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
List <string> plugInFiles = new List <string>();
foreach (string path in paths)
{
string[] plgs = Directory.GetFiles(path, "*.dll");
plugInFiles.AddRange(plgs);
}
foreach (string pluginfile in plugInFiles)
{
//创建读取插件模块的自制特性
try {
//Assembly assembly = Assembly.LoadFrom(plugInFiles[i]);
Assembly assembly = _plugInLoader.RemoteLoadAssembly(pluginfile);
if (assembly == null)
{
continue;
}
AttributesReader attrReader = new AttributesReader(assembly);
PluginAttribute[] attrPlugInInfo = attrReader.GetPlugInMenuInfoAttribute();
for (int menuIndex = 0; menuIndex < attrPlugInInfo.Length; menuIndex++)
{
if (!(attrPlugInInfo[menuIndex] is ClientPluginAttribute))
{
continue;
}
ClientPluginAttribute attrMenuPluginInfo = attrPlugInInfo[menuIndex] as ClientPluginAttribute;
//检查所给定的启动类是否实现了_assemblyIntfType接口
Type startupInterfaceType = attrMenuPluginInfo.StartupClassType.GetInterface(_assemblyInterfaceType);
if (startupInterfaceType == null)
{
_log.Warn("所给定的启动类没有实现[" + _assemblyInterfaceType + "]接口！");
break;
}
XmlNode plugInNode = plugInDoc.DocumentElement.SelectSingleNode(
"//plugin[@library='" + Path.GetFileName(pluginfile) + "'"
+ " and @class='" + attrMenuPluginInfo.StartupClassType.FullName + "']");
if (plugInNode != null)
{
break;
}
Hashtable ht = new Hashtable();
ht.Add("caption", attrMenuPluginInfo.MenuNameSubsystem);
XmlNode subSystemRootNode = FindAndCreateXmlNode(plugInDoc, plugInDoc.DocumentElement
, "system[@caption='" + attrMenuPluginInfo.MenuNameSubsystem + "']"
, "system", ht);
ht.Clear();
ht.Add("caption", attrMenuPluginInfo.MenuNameParent);
XmlNode subSystemPlugInsNode = FindAndCreateXmlNode(plugInDoc, subSystemRootNode
, "plugins[@caption='" + attrMenuPluginInfo.MenuNameParent + "']"
, "plugins", ht);
ht.Clear();
ht.Add("caption", attrMenuPluginInfo.MenuNameAssembly);
ht.Add("library", Path.GetFileName(pluginfile));
ht.Add("class", attrMenuPluginInfo.StartupClassType.FullName);
if (!String.IsNullOrEmpty(attrMenuPluginInfo.IconName))
{
ht.Add("iconname", attrMenuPluginInfo.IconName);
}
FindAndCreateXmlNode(plugInDoc, subSystemPlugInsNode
, "plugin[@library='" + Path.GetFileName(pluginfile) + "'"
+ " and @class='" + attrMenuPluginInfo.StartupClassType.FullName + "']"
, "plugin", ht);
}
}
catch (Exception e) {
_log.Error(e.ToString());
continue;
}
}
plugInDoc.Save(_configFileName);
_log.Info("Config文件更新完成");
return(true);
}
internal static Assembly LoadPlugIn(string appPath, string assemblyName)
{
EnsurePlugInLoader(appPath);
return(_plugInLoader.RemoteLoadAssembly(assemblyName));
}