HTTP Status 404 - Not Found in Spring MVC 4 application

Question

I have NetBeans Spring MVC project with Maven.But I got the following error: HTTP Status 404 - Not Found. How can I avoid this error? Hierarchy:

-FinalWebStore
   -Web Pages
     -WEB-INF
          +views
          web.xml
          mvc-dispatcher-servlet.xml
   -Source Packages
      +com.karans.finalwebstore.controllers
      +com.karans.finalwebstore.daoimps
      +com.karans.finalwebstore.daos
      +com.karans.finalwebstore.models
   +Dependecies
...

Here are my files: web.xml:

    <web-app id="WebApp_ID" 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>Spring Web MVC Application</display-name>


    <servlet>
        <servlet-name>mvc-dispatcher</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>



    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

</web-app>

mvc-dispatcher-servlet.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-4.0.xsd
 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">


   <bean name="/login"
        class="com.karans.finalwebstore.controllers.UserController" />


    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
    <bean id="ds"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">

        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/webstore" />
        <property name="username" value="root" />
        <property name="password" value="123456" />
    </bean>


    <bean id="jt" class="org.springframework.jdbc.core.JdbcTemplate">  
        <property name="dataSource" ref="ds"></property>  
    </bean>  


    <bean id="ProductDAOimpl" class="com.karans.finalwebstore.daoimps.ProductDAOimp">

        <property name="template" ref="jt"></property>
    </bean>

    <bean id="UserDAOimpl"    class="com.karans.finalwebstore.daoimps.UserDAOimp">

        <property name="template" ref="jt"></property>  
    </bean>
    <bean id="CartDAOimpl" class="com.karans.finalwebstore.daoimps.CartDAOimp">

        <property name="template" ref="jt"></property>
    </bean>
    <bean id="UserController"    class="com.karans.finalwebstore.controllers.UserController">
        <property name="userdaoimp" ref="UserDAOimpl"></property>
    </bean>



</beans>

UserController.java:

    package com.karans.finalwebstore.controllers;
import com.karans.finalwebstore.daoimps.UserDAOimp;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class UserController {
    @Autowired
    UserDAOimp userdaoimp;

    public void setUserdaoimp(UserDAOimp userdaoimp) {
        this.userdaoimp = userdaoimp;
    }

    public String login(){


        return "login";
    }


}

login.jsp:

<%-- 
    Document   : login
    Created on : Jul 15, 2017, 2:57:13 PM
    Author     : raziyeh
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>LOG IN PAGE</title>
    </head>
    <body>
        <h1>Hello World Taze avvaleshe!</h1>
    </body>
</html>

And I think other files are not important.

Answer 1

Change your login function as

@RequestMapping(value = "/")
public String login(){
    return "login";
}

Also change the web.xml file in the below portion :

<servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

You need to delete the below line from mvc-dispatcher-servlet.xml

<bean name="/login"
        class="com.karans.finalwebstore.controllers.UserController" />

Also, make sure that login.jsp file contains under the /WEB-INF/views/ folder.

Answer 2

Try the following:

Add the Spring MVC namespace to your mvc-dispatch-servlet.xml file xmlns:mvc="http://www.springframework.org/schema/mvc". You will need to update the xsi:schemaLocation as well with this "http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"

Second add <mvc:annotation-driven /> to the file. If I recall correctly, this enables processing of @RequestMapping annotations.

Third, remove the bean declared with the name "/login". It is the same type as the UserController declared at the bottom of the file.