HTTP Status 404 - Using Spring+Tomcat - spring

Question

I am beginner to Spring and I am working on my learning project. With below code, I can view the index.jsp but not test.jsp. I use Spring 4.0.1+ Tomcat 7.0.52 + STS 3.4.0.
Webapp.java
package springweb;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class Webapp extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[0];
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[]{ WebConfig.class };
}
#Override
protected String[] getServletMappings() {
return new String[]{ "/" };
}
}
IndexController.java
package springweb.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class IndexController {
private static final Logger logger = LoggerFactory.getLogger(IndexController.class);
#RequestMapping(value="/")
public String index() {
logger.info("Welcome Index!");
return "index";
}
}
TestController.java
package springweb.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
#Controller
public class TestController {
private static final Logger logger = LoggerFactory.getLogger(TestController.class);
#RequestMapping(value="/test/", method = RequestMethod.GET)
public String test() {
logger.info("Welcome test!");
return "test";
}
}
WebConfig.java
package springweb;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
#Configuration
#EnableWebMvc
#ComponentScan(basePackages={"springweb.controller"})
public class WebConfig extends WebMvcConfigurerAdapter {
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
#Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/jsp/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}

Answer 1

Simple answer for 100% free xml:
Set property for the DispatcherServlet
public class SpringMvcInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { RootConfig.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return new Class[] {AppConfig.class };
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
//that's important!!
#Override
protected void customizeRegistration(ServletRegistration.Dynamic registration) {
boolean done = registration.setInitParameter("throwExceptionIfNoHandlerFound", "true"); // -> true
if(!done) throw new RuntimeException();
}
}
Create #ControllerAdvice:
#ControllerAdvice
public class AdviceController {
#ExceptionHandler(NoHandlerFoundException.class)
public String handle(Exception ex) {
return "redirect:/404";
}
#RequestMapping(value = {"/404"}, method = RequestMethod.GET)
public String NotFoudPage() {
return "404";
}
}
that's all