How to handle URLs that don't appear in spring

Question

Dispatcher Manager Servlet

  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/springconfig/dispatcher-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>

And the controller has a handler like

@RequestMapping("moduleone")
public class ApplicationController {    

    @RequestMapping(value="Login.html",method=RequestMethod.GET)
    public ModelAndView showLoginPage(){

        ModelAndView mv=new ModelAndView("../moduleone/Login");
        mv.addObject("loginForm", new LoginForm());
        return mv;

    }
    @RequestMapping(value="Home.html", method = RequestMethod.GET)
    public  ModelAndView showHome(HttpServletRequest request)  {
        ModelAndView mv=new ModelAndView("Home");       
        mv.addObject("customerName",appCon.getFirstName() );
        return mv;  
    }   

}

Is it possible to request a handler that does not appear in the controller as

  http://localhost:8090/Project/moduleone/invalidpage.html

  http://localhost:8090/Project/moduleone/invalidurl/invalidpage

I tried @RequestMapping(value="*",method=RequestMethod.GET)but doest work

Answer 1

Since 404 (page not found) actually throws an exception at the web container level, containers usually provide an exception handling mechanism, so you can try exception handling (or the so-called error) as shown below;

First create a controller

@Controller
public class PageNotFoundErrorController {

    @RequestMapping(value="/pageNotFound.html")
    public String handlePageNotFound() {
            // do something
        return "pageNotFound";
    }
}

and configure web.xml to map the error to the controller written above;

<error-page>
    <error-code>404</error-code>
    <location>/pageNotFound.html</location>
</error-page>

, 403, 500 web.xml .

, , ( ); http://www.mkyong.com/spring-mvc/spring-mvc-exception-handling-example/

Answer 2

, , .

 //This one is OK
 http://localhost:8090/Project/moduleone/invalidpage.html
 //add invalid.html not a folder it should be file
 http://localhost:8090/Project/moduleone/invalidurl/invalidpage.html

HomeController.java

@RequestMapping(value = {"*/*.html","*.html"}, method = RequestMethod.GET)
public String test(HttpServletResponse response) throws IOException {
    return new String("home");
}

-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>TestSpringMVC</display-name>
    <context-param>
        <param-name>contextClass</param-name>
        <param-value>
            org.springframework.web.context.support.AnnotationConfigWebApplicationContext
        </param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
    <servlet-name>SpringDispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/springconfig/dispatcher-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringDispatcher</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>

    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
</web-app>

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