add Destructor func

@@ -59,6 +59,10 @@ func (c *Controller) Prepare() {
 }
 
 func (c *Controller) Finish() {
+
+}
+
+func (c *Controller) Destructor() {
 	if c.CruSession != nil {
 		c.CruSession.SessionRelease()
 	}

@@ -388,6 +388,8 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 				}
 			}
 		}
+		method = vc.MethodByName("Destructor")
+		method.Call(in)
 	}
 
 	//if no matches to url, throw a not found exception