Will preHandle method of Interceptor handle ajax calls also?

Question

I have written a preHandle method that will check the URL for a token and it works fine.

But will the same work for ajax calls?

 public boolean preHandle(final HttpServletRequest request, final HttpServletResponse response,final Object handler) throws Exception {
            String requesttoken = request.getParameter("token");
            if (requesttoken != null && validatetoken(requesttoken)) {
                return true;
            } else {
                response.sendRedirect("/404.html");
                return false;
            }
        }

That depends on the pattern you are applying the interceptor on. — Abdullah Khan, Apr 24 '17 at 10:44
Will response.sendRedirect() method redirect ajax calls also? — superuser33333, Apr 24 '17 at 11:00
check out [this](http://stackoverflow.com/questions/22990378/interceptor-prehandle-not-redirecting-to-login-html) answer — Abdullah Khan, Apr 24 '17 at 11:24
I don't want to use Controllers. On searching found a way of adding headers to the response and validating at client side.But since its a redirection the custom headers are getting replaced. Any idea on this? — superuser33333, Apr 26 '17 at 09:15

score 0 · Accepted Answer · edited May 23 '17 at 12:10

0

Yes the interceptor will work for ajax calls as long as the pattern matches. Check out this SO answer.

If you want to exclude ajax calls you can exclude the patterns like :

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new ThemeInterceptor()).addPathPatterns("/**").excludePathPatterns("/ajax/**");
    }

}

edited May 23 '17 at 12:10

Community

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answered Apr 24 '17 at 11:07

Abdullah Khan

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What happens when the interceptor's pre-handle returns true? Will it follow the flow of Controller and return the View? – superuser33333 May 09 '17 at 09:55
@SuprajaKumaravel : yes it will – Abdullah Khan May 09 '17 at 10:50

Will preHandle method of Interceptor handle ajax calls also?

1 Answers1