//得到当前请求的控制器类型
private Type GetControllerType(SwiftRouteData routeData, string controllerName)
{
//从路由配置信息里面读取命名空间和程序集
object routeNamespaces = routeData.RouteValue["namespaces"];
object routeAssembly = routeData.RouteValue["assembly"];
//requestContext.RouteData.Values.TryGetValue("namespaces", out routeNamespaces);
//requestContext.RouteData.Values.TryGetValue("assembly", out routeAssembly);
//通过反射得到控制器的类型
var type = Assembly.Load(routeAssembly.ToString()).GetType(routeNamespaces.ToString() + "." + controllerName + "Controller", false, true);
return(type);
}
public override void Execute(SwiftRouteData routeData)
{
//1.得到当前控制器的类型
Type type = this.GetType();
//2.从路由表中取到当前请求的action名称
string actionName = routeData.RouteValue["action"].ToString();
//3.从路由表中取到当前请求的Url参数
object parameter = null;
if (routeData.RouteValue.ContainsKey("parameters"))
{
parameter = routeData.RouteValue["parameters"];
}
var paramTypes = new List <Type>();
List <object> parameters = new List <object>();
if (parameter != null)
{
var dicParam = (Dictionary <string, string>)parameter;
foreach (var pair in dicParam)
{
parameters.Add(pair.Value);
paramTypes.Add(pair.Value.GetType());
}
}
//4.通过action名称和对应的参数反射对应方法。
//这里第二个参数可以不理会action字符串的大小写，第四个参数决定了当前请求的action的重载参数类型
System.Reflection.MethodInfo mi = type.GetMethod(actionName,
BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase, null, paramTypes.ToArray(), null);
//5.执行该Action方法
var actionResult = mi.Invoke(this, parameters.ToArray()) as ActionResult;
//6.得到action方法的返回值，并执行具体ActionResult的ExecuteResult()方法。
actionResult.ExecuteResult(routeData);
}
//通过当前的请求上下文和控制器名称得到控制器的对象
public IController CreateController(SwiftRouteData routeData, string controllerName)
{
if (routeData == null)
{
throw new ArgumentNullException("routeData");
}
if (string.IsNullOrEmpty(controllerName))
{
throw new ArgumentException("controllerName");
}
//得到当前的控制类型
Type controllerType = GetControllerType(routeData, controllerName);
if (controllerType == null)
{
return(null);
}
//得到控制器对象
IController controller = GetControllerInstance(routeData, controllerType);
return(controller);
}
/// <summary>
/// 返回处理当前请求的HttpHandler对象
/// </summary>
/// <param name="routeData">当前的请求的路由对象</param>
/// <param name="context">当前请求的下文对象</param>
/// <returns>处理请求的HttpHandler对象</returns>
public System.Web.IHttpHandler GetHttpHandler(SwiftRouteData routeData, HttpContextBase context)
{
return(new MvcHandler(routeData, context));
}
//得到当前请求的控制器实例
private IController GetControllerInstance(SwiftRouteData routeData, Type controllerType)
{
var oRes = Activator.CreateInstance(controllerType) as IController;
return(oRes);
}
public abstract void Execute(SwiftRouteData routeData);
//通过构造函数将两个对象传过来，替代了原来RequestContext的作用
public MvcHandler(SwiftRouteData routeData, HttpContextBase context)
{
SwiftRouteData = routeData;
SwiftContext = context;
}
