Request is not mapped to the controller - spring

Question

When I go with the url..http://localhost:8080/springdemo/hello..it is showing 404 not found error..I have put my java file inside src/main/java as usual in Maven project. My controller code is as follows :-
package org.abhishek;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import java.lang.System;
#Controller
public class HelloWorldController {
#RequestMapping(value="/hello", method = RequestMethod.GET)
public ModelAndView helloWorld() {
System.out.println("hello**");
String message = "Hello World, Spring MVC # Javatpoint";
return new ModelAndView("hello", "message", message);
}
}
Web.xml file given below
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="java.sun.com/xml/ns/javaee"; xmlns:xsi="w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="java.sun.com/xml/ns/javaee java.sun.com/xml/ns/javaee/web-app_2_5.xsd">;
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
</web-app>
I put this line System.out.println() for debugging purpose and I found that this method is not executed with the above mentioned url...i.e. http://localhost:8080/springdemo/hello.Please answer..thanx in advance.

Answer 1

This is speculative, but you could have a mapping problem in your web.xml file, which would result in the Spring controller not even being hit (despite having a correct #RequestMapping annotation). Your web.xml file should have the following servlet mapping:
<servlet>
<servlet-name>springServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springServlet</servlet-name>
<url-pattern>/springdemo/*</url-pattern>
</servlet-mapping>
Now paste your URL into a web browser and see if you can hit it:
http://localhost:8080/springdemo/hello