@Override
protected ActionForward processActionPerform(
HttpServletRequest request,
HttpServletResponse response,
Action action,
ActionForm form,
ActionMapping mapping)
throws IOException, ServletException {
// 1，获取要调用的方法
String methodName = "execute";
if (DispatchAction.class.isAssignableFrom(action.getClass())) {
methodName = request.getParameter(mapping.getParameter());
if (methodName == null) {
methodName = "unspecified";
}
}
Method method = null;
try {
method = action.getClass().getDeclaredMethod(methodName, parameterTypes);
} catch (NoSuchMethodException e) {
throw new ItcastException(e);
} catch (Exception e) {
throw new ItcastException(e);
}
// 2，得到这个方法所要求的权限
Privilege privilege = method.getAnnotation(Privilege.class);
if (privilege == null) {
privilege = action.getClass().getAnnotation(Privilege.class);
}
if (privilege != null) {
// 3，查看用户是否有这个权限
User currentUser = ExecutionContext.get().getCurrentUser();
if (!PrivilegeController.isUserHasPermission( //
currentUser, //
privilege.resource(), //
privilege.action())) {
// 4，如果没有权限，抛出异常
String msg =
"您没有权限【resource="
+ privilege.resource()
+ ",action="
+ privilege.action() //
+ "】访问方法【"
+ action.getClass()
+ "."
+ methodName
+ "】";
throw new ItcastPermissionDeniedException(msg);
}
}
return super.processActionPerform(request, response, action, form, mapping);
}
/**
* Gets the <code>Action</code> specified by the mapping type from a PicoContainer. The action
* will be instantiated if necessary, and its dependencies will be injected. The action will be
* instantiated via a special PicoContainer that just contains actions. If this container already
* exists in the request attribute, this method will use it. If no such container exists, this
* method will create a new Pico container and place it in the request. The parent container will
* either be the request container, or if that container can not be found the session container,
* or if that container can not be found, the application container. If no parent container can be
* found, a <code>PicoInitializationException</code> will be thrown. The action path specified in
* the mapping is used as the component key for the action.
*
* @param request the Http servlet request.
* @param mapping the Struts mapping object, whose type property tells us what Action class is
* required.
* @param servlet the Struts <code>ActionServlet</code>.
* @return the <code>Action</code> instance.
* @throws PicoIntrospectionException if the mapping type does not specify a valid action.
* @throws PicoInitializationException if no request, session, or application scoped Pico
* container can be found.
*/
public Action processAction(
HttpServletRequest request, ActionMapping mapping, ActionServlet servlet)
throws PicoIntrospectionException, PicoInitializationException {
Object actionKey = mapping.getPath();
Class actionType = getActionClass(mapping.getType());
Action action = (Action) sf.getService(actionKey);
if (action == null) {
sf.registerService(actionKey, actionType);
action = (Action) sf.getService(actionKey);
}
action.setServlet(servlet);
return action;
}
public void setServlet(ActionServlet actionServlet) {
super.setServlet(actionServlet);
ServletContext servletContext = actionServlet.getServletContext();
WebApplicationContext wac =
WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
this.petStore = (PetStoreFacade) wac.getBean("petStore");
}
/**
* Execute the specified <code>Action</code>, and return the resulting <code>ActionForward</code>.
*
* @param context The <code>Context</code> for this request
* @param action The <code>Action</code> to be executed
* @param actionConfig The <code>ActionConfig</code> defining this action
* @param actionForm The <code>ActionForm</code> (if any) for this action
* @throws Exception if thrown by the <code>Action</code>
*/
protected ForwardConfig execute(
ActionContext context, Action action, ActionConfig actionConfig, ActionForm actionForm)
throws Exception {
ServletActionContext saContext = (ServletActionContext) context;
return (action.execute(
(ActionMapping) actionConfig, actionForm, saContext.getRequest(), saContext.getResponse()));
}
/**
* Initialize the WebApplicationContext for this Action. Invokes onInit after successful
* initialization of the context.
*
* @see #initWebApplicationContext
* @see #onInit
*/
public void setServlet(ActionServlet actionServlet) {
super.setServlet(actionServlet);
if (actionServlet != null) {
this.webApplicationContext = initWebApplicationContext(actionServlet);
this.messageSourceAccessor = new MessageSourceAccessor(this.webApplicationContext);
onInit();
} else {
onDestroy();
}
}