/// <summary>
/// 根据要调用的方法名返回对应的 Action
/// </summary>
/// <param name="controller"></param>
/// <param name="action"></param>
/// <param name="request"></param>
/// <returns></returns>
private static ActionDescription GetServiceAction(Type controller, string action, HttpRequest request)
{
if (controller == null)
{
throw new ArgumentNullException("controller");
}
if (string.IsNullOrEmpty(action))
{
throw new ArgumentNullException("action");
}
// 首先尝试从缓存中读取
string key = request.HttpMethod + "#" + controller.FullName + "@" + action;
ActionDescription mi = (ActionDescription)s_ServiceActionTable[key];
if (mi == null)
{
bool saveToCache = true;
MethodInfo method = FindAction(action, controller, request);
if (method == null)
{
// 如果Action的名字是submit并且是POST提交，则需要自动寻找Action
// 例如：多个提交都采用一样的方式：POST /Ajax/Product/submit
if (action.IsSame("submit") && request.HttpMethod.IsSame("POST"))
{
// 自动寻找Action
method = FindSubmitAction(controller, request);
saveToCache = false;
}
}
if (method == null)
{
return(null);
}
var attr = method.GetMyAttribute <ActionAttribute>();
mi = new ActionDescription(method, attr);
if (saveToCache)
{
s_ServiceActionTable[key] = mi;
}
}
return(mi);
}
/// <summary>
/// 根据一个页面请求路径，返回内部表示的调用信息。
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
public static InvokeInfo GetActionInvokeInfo(string url)
{
if (string.IsNullOrEmpty(url))
{
throw new ArgumentNullException("url");
}
MatchActionDescription md = null;
ActionDescription action = null;
// 先直接用URL从字典中查找匹配项。
if (s_PageActionDict.TryGetValue(url, out action) == false)
{
// 如果不能直接匹配URL，就用正则表达式再逐个匹配。
md = GetActionUsingRegex(url);
if (md == null)
{
return(null);
}
else
{
action = md.ActionDescription;
}
}
InvokeInfo vkInfo = new InvokeInfo();
vkInfo.Controller = action.PageController;
vkInfo.Action = action;
if (md != null)
{
vkInfo.RegexMatch = md.Match;
}
if (vkInfo.Action.MethodInfo.IsStatic == false)
{
//vkInfo.Instance = Activator.CreateInstance(vkInfo.Controller.ControllerType);
vkInfo.Instance = vkInfo.Controller.ControllerType.FastNew();
}
return(vkInfo);
}
/// <summary>
/// 加载所有的Controller
/// </summary>
private static void InitControllers()
{
BaseActionHandlerFactory[] baseActionHandlerFactoryList = GetConfigBaseActionHandlerFactory();
List <ControllerDescription> serviceControllerList = new List <ControllerDescription>(1024);
var pageControllerList = new List <ControllerDescription>(1024);
ICollection assemblies = BuildManager.GetReferencedAssemblies();
foreach (Assembly assembly in assemblies)
{
// 过滤以【System】开头的程序集，加快速度
if (assembly.FullName.StartsWith("System", StringComparison.OrdinalIgnoreCase))
{
continue;
}
foreach (Type t in assembly.GetExportedTypes())
{
if (t.IsClass == false)
{
continue;
}
if (t.Name.EndsWith("Controller"))
{
pageControllerList.Add(new ControllerDescription(t));
}
for (int i = 0; i < baseActionHandlerFactoryList.Length; i++)
{
if (baseActionHandlerFactoryList[i].TypeIsService(t))
{
serviceControllerList.Add(new ControllerDescription(t));
break;
}
}
}
}
// 用于Ajax or Service 调用的Action信息则采用延迟加载的方式。
s_ServiceFullNameDict = serviceControllerList.ToDictionary(x => x.ControllerType.FullName, StringComparer.OrdinalIgnoreCase);
s_ServiceShortNameDict = new Dictionary <string, ControllerDescription>(s_ServiceFullNameDict.Count, StringComparer.OrdinalIgnoreCase);
foreach (ControllerDescription description in serviceControllerList)
{
try {
s_ServiceShortNameDict.Add(description.ControllerType.Name, description);
}
catch (ArgumentException) {
// 如果遇到已存在的KEY，把原先存放的项也设置为 null，便于查找时返回 null
// 也就是说：短名不能重复，如果重复则不返回任何一个。
s_ServiceShortNameDict[description.ControllerType.Name] = null;
}
}
// 提前加载Page Controller中的所有Action方法
s_PageActionDict = new Dictionary <string, ActionDescription>(4096, StringComparer.OrdinalIgnoreCase);
List <RegexActionDescription> regexActions = new List <RegexActionDescription>();
foreach (ControllerDescription controller in pageControllerList)
{
foreach (MethodInfo m in controller.ControllerType.GetMethods(ActionBindingFlags))
{
ActionAttribute actionAttr = m.GetMyAttribute <ActionAttribute>();
if (actionAttr != null)
{
ActionDescription actionDescription =
new ActionDescription(m, actionAttr)
{
PageController = controller
};
PageUrlAttribute[] pageUrlAttrs = m.GetMyAttributes <PageUrlAttribute>();
foreach (PageUrlAttribute attr in pageUrlAttrs)
{
if (string.IsNullOrEmpty(attr.Url) == false)
{
s_PageActionDict.Add(attr.Url, actionDescription);
}
}
PageRegexUrlAttribute[] regexAttrs = m.GetMyAttributes <PageRegexUrlAttribute>();
foreach (PageUrlAttribute attr2 in regexAttrs)
{
if (string.IsNullOrEmpty(attr2.Url) == false)
{
Regex regex = new Regex(attr2.Url, RegexOptions.Compiled);
regexActions.Add(new RegexActionDescription {
Regex = regex, ActionDescription = actionDescription
});
}
}
}
}
}
if (regexActions.Count > 0)
{
s_RegPageActionArray = regexActions.ToArray();
}
}