I'm trying to handle 404 error using an @ControllerAdvice in a Spring MVC application totally configured using Java configuration.
Here you have my conf:
public class WebAppInitializer implements WebApplicationInitializer
{
@Override
public void onStartup(ServletContext container)
{
// Create the dispatcher servlet's Spring application context
AnnotationConfigWebApplicationContext dispatcherServlet = new AnnotationConfigWebApplicationContext();
dispatcherServlet.register(WebMvcConfig.class);
dispatcherServlet.setServletContext(container);
dispatcherServlet.refresh();
CookieHelper cookie = (CookieHelper) dispatcherServlet.getBean("cookie");
final Gson gson = (Gson) dispatcherServlet.getBean("gson");
// Register and map the dispatcher servlet
ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(dispatcherServlet));
dispatcher.addMapping("/");
dispatcher.setLoadOnStartup(1);
dispatcher.setInitParameter("throwExceptionIfNoHandlerFound", "true");
FilterRegistration.Dynamic filter = container.addFilter("BaseFilter", new BaseFilter(cookie, gson));
filter.setInitParameter("forceEncoding", "true");
filter.addMappingForUrlPatterns(null, true, "/coolers/*");
filter.addMappingForUrlPatterns(null, true, "/hothouses/*");
filter.addMappingForUrlPatterns(null, true, "/lang/*");
filter.addMappingForUrlPatterns(null, true, "/organizations/*");
filter.addMappingForUrlPatterns(null, true, "/reworks/*");
filter.addMappingForUrlPatterns(null, true, "/select/*");
filter.addMappingForUrlPatterns(null, true, "/volumes/*");
}
}
and my GlobalExceptionHandlerController:
@ControllerAdvice
public class GlobalExceptionHandlerController
{
@ExceptionHandler(NoHandlerFoundException.class)
@ResponseStatus(HttpStatus.NOT_FOUND)
public String handle() {
System.out.println("test test test test");
return "error/index";
}
}
NoHandlerFoundException not firing?
I had the same issue, got it resolved. Below given steps to solve the same.
GlobalExceptionHandler annotated with @ControllerAdvice@ControllerAdvice
public class GlobalExceptionHandler
{
@ExceptionHandler(NoHandlerFoundException.class)
public String handleNotFoundError(Exception ex)
{
return "redirect:/yourCustom404page";
}
}
DispatcherServlet to throw the exception if no handler is found. We can do this by setting the throwExceptionIfNoHandlerFound servlet initialization parameter to truea. If spring-mvc java based configuration is
public class AppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer
{
...
@Override
protected DispatcherServlet createDispatcherServlet(WebApplicationContext servletAppContext)
{
final DispatcherServlet servlet = (DispatcherServlet) super.createDispatcherServlet(servletAppContext);
servlet.setThrowExceptionIfNoHandlerFound(true);
return servlet;
}
}
b. if spring-mvc xml based configuration, initialize your dispatcher servlet like this
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>throwExceptionIfNoHandlerFound</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
c. if spring-boot
spring.resources.add-mappings=false in your application.properties or yaml file.
Hope it helps