I want to handle 404 page not found exception in my Spring MVC web app, I'm using SPRING 4.2.5.RELEASE, I had read several question regarding this topic but the similar questions are using a different spring java configuration.
I have a Global Exception Handler Controller class that have all my Exceptions, this class works fine but I can't handle a 404 page not found exception.
This is the approach that I take following a tutorial
1) I created a class named ResourceNotFoundException that extends from RuntimeException and I putted this annotation over the class definition @ResponseStatus(HttpStatus.NOT_FOUND)
like this:
@ResponseStatus(HttpStatus.NOT_FOUND)
public class ResourceNotFoundException extends RuntimeException {
}
2) I created this method in my exception's controller class
@ExceptionHandler(ResourceNotFoundException.class)
@ResponseStatus(HttpStatus.NOT_FOUND)
public String handleResourceNotFoundException() {
return "notFoundJSPPage";
}
But still when I put a URL that doesn't exist I get this error "No mapping found for HTTP request with URI"
The questions that I had read said that I need to enable to true an option for the Dispatcher but since my configuration it's different from the other questions and I don't have a Web.xml I couldn't apply that.
Here it's my Config.java
@EnableWebMvc
@Configuration
@ComponentScan({"config", "controllers"})
public class ConfigMVC extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/WEB-INF/resources/");
}
@Bean
public UrlBasedViewResolver setupViewResolver() {
UrlBasedViewResolver resolver = new UrlBasedViewResolver();
resolver.setPrefix("/WEB-INF/jsp/");
resolver.setSuffix(".jsp");
resolver.setViewClass(JstlView.class);
return resolver;
}
}
Here is my WebInitializer
public class WebInicializar implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(ConfigMVC.class);
ctx.setServletContext(servletContext);
Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
servlet.addMapping("/");
servlet.setLoadOnStartup(1);
}
}
Here is my Global Exception Handler Controller
@ControllerAdvice
public class GlobalExceptionHandlerController {
@ExceptionHandler(value = NullPointerException.class)
public String handleNullPointerException(Exception e) {
System.out.println("A null pointer exception ocurred " + e);
return "nullpointerExceptionPage";
}
@ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR)
@ExceptionHandler(value = Exception.class)
public String handleAllException(Exception e) {
System.out.println("A unknow Exception Ocurred: " + e);
return "unknowExceptionPage";
}
@ExceptionHandler(ResourceNotFoundException.class)
@ResponseStatus(HttpStatus.NOT_FOUND)
public String handleResourceNotFoundException() {
return "notFoundJSPPage";
}
}
And the class I created that extends Runtime Exception
@ResponseStatus(HttpStatus.NOT_FOUND)
public class ResourceNotFoundException extends RuntimeException{
}