Privilegelnterceptor

package cn.edu.hgu.interceptor;


import java.util.Map;


import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.MethodFilterInterceptor;


import cn.edu.hgu.bean.User;


public class Privilegelnterceptor extends MethodFilterInterceptor{


@Override
protected String doIntercept(ActionInvocation invocation) throws Exception {
Map<String, Object> session = ActionContext.getContext().getSession();
User user = (User) session.get("u");
if(user!=null){
return invocation.invoke();
}else{
return "login";
}
}


}