Spring MVC is giving http 404 error what wrong?-CodePudding

i am learning spring mvc and i try to build a simple webapp but it don't work. the error is : HTTP 404-NOT FOUND i have try many time but it still the same error. i don't know if the error is coming from my code or from tomcad 10 helps please

i am using eclipse IDE and tomcat 10

this is my folder structure enter image description here

spring-mvc-demo-sevlet.xml:

  <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<!-- Step 3: Add support for component scanning -->
<context:component-scan base-package="com.luv2code.springdemo" />

<!-- Step 4: Add support for conversion, formatting and validation support -->
<mvc:annotation-driven/>

<!-- Step 5: Define Spring MVC view resolver -->
<bean
    >
    <property name="prefix" value="/WEB-INF/view/" />
    <property name="suffix" value=".jsp" />
</bean>

</beans>

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web- 
app_3_1.xsd"
id="WebApp_ID" version="3.1">

<display-name>spring-mvc-demo</display-name>

<absolute-ordering />

<!-- Spring MVC Configs -->

<!-- Step 1: Configure Spring MVC Dispatcher 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/spring-mvc-demo-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Step 2: Set up URL mapping for Spring MVC Dispatcher Servlet -->
    <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
 </servlet-mapping>

    </web-app>

controller :

package com.luv2code.springdemo.mvc;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HomeController {
    
@RequestMapping("/")
public String showPage() {
        return "main-menu";
    }

}

the view :

<!DOCTYPE html>
<html>
<head>
</head>
<body>

<h2> Spring MVC Demo -Home Page</h2>
</body>
</html>

CodePudding user response：

If you are studing from Luv2code then listen to him properly till end I think you don't have and welcome page/ index page is not present now. You need to make it so that it will redirect to your page. Other wise type URL carefully.

CodePudding user response：

You are using both annotations and web.xml file, when you use annotations you don't require web.xml file.

Servlet name in the xml file is "dispatcher" and in the request mapping the controller is called "HomeController".

I think the request isn't going to HomeController as the Spring MVC is trying to find servlet with the name dispatcher(that's why the page not found error).

try removing the web.xml file