Struct2 custom interceptor

1 because struct2 functions such as file upload and data verification are all set by the system's default
The interceptor in defalutStack is implemented, so we define that the interceptor must reference the default defalutStack
In this way, other functions of struct2 will not be affected.
Struts. xml









/WEB-INF/page/message. jsp





// Access list _ * This method will call the PermissionInterceptor interceptor.
PermissionInterceptor. java


Public String intercept (ActionInvocation invocation) throws Exception {
Object user = ActionContext. getContext (). getSession (). get ("user ");
If (user! = Null) return invocation. invoke ();
ActionContext. getContext (). put ("message", "You are not authorized to execute this method ");
Return "success ";
}