一杯清茶

import javax.servlet.http.HttpServletRequest;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.struts.action.ActionMapping;
/**
* 這是一個攔截器,用來驗證用戶是否通過驗證
*
*/
public class AuthorityInterceptor implements MethodInterceptor {
public Object invoke(MethodInvocation invocation) throws Throwable
{
HttpServletRequest request = null;
ActionMapping mapping = null;
Object[] args = invocation.getArguments();
for (int i = 0 ; i < args.length ; i++ )
{
if (args[i] instanceof HttpServletRequest) request = (HttpServletRequest)args[i];
if (args[i] instanceof ActionMapping) mapping = (ActionMapping)args[i];
}
if ( request.getSession().getAttribute("adminname") != null)
{
return invocation.proceed();
}
else
{
return mapping.findForward("login");
}
}
}