It won't be possible to detect that the given request reached your
application because a user hit the Back button. There is no indication
in HTTP protocol that could tell you so.
Regards
Łukasz
wt., 25 sty 2022 o 22:58 albert kao napisał(a):
>
> If the user presses the Back button of a browser, my application likes to
> intercept that and display a text message at the current web page.
> How to do that without using javascript?
>
> The following codes show an approach with AbstractInterceptor.
> Please review whether it will work.
> If yes, how to get the flag or value that the Back button of a browser was
> pressed?
> If not, please suggest alternatives.
> Thanks.
>
>
> import java.util.Map;
>
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpSession;
>
> import org.apache.struts2.StrutsStatics;
>
> import com.opensymphony.xwork2.ActionContext;
> import com.opensymphony.xwork2.ActionInvocation;
> import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
>
>
> public class MyInterceptor extends AbstractInterceptor {
> private Map session;
>
> @Override
> public class MyInterceptor extends AbstractInterceptor {
> private Map session;
>
> @Override
> public String intercept(ActionInvocation invocation) throws Exception {
>final ActionContext context = invocation.getInvocationContext();
>session = context.getSession();
>HttpServletRequest request = (HttpServletRequest);
> context.get(StrutsStatics.HTTP_REQUEST);
>HttpSession httpSession = request.getSession(true);
>
>synchronized (httpSession) {
>//...
>}
> }
> }
>
> Struts version is 2.5.26.
>
>
> Virus-free.
> www.avg.com
>
> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
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