Spring MVC Simple Project - 404 - spring

Question

I new about Spring, i'm trying to create a simple project but i can't figure it out!
I have java JDK 7 up to date.
Apache Tomcat 7 up to date.
Spring 3 framework / Eclipse JUNO 4 integrated.
HERE
it is my project structure (sorry for the external link bur i have not 10 reputation points)
My web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</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>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
My servlet-context.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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Scans within the base package of the application for #Components to configure as beans -->
<!-- #Controller, #Service, #Configuration, etc. -->
<context:component-scan base-package="controller" />
<!-- Enables the Spring MVC #Controller programming model -->
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
My HomeController.java file:
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Handles requests for the application home page.
*/
#Controller
public class HomeController {
#RequestMapping(value = "/home")
public String home() {
System.out.println("HomeController: Passing through...");
return "home";
}
}
My problem is that when i call the servlet from the browser (for instance in that way):
http://localhost:8080/SpringMVC/home
i have a HTTP 400 error - description The requested resource is not available.
I suspect is a libraries problem but i put all the Spring libraries (and much more) in WEB-INF/lib. In the Eclipse project obviously i add everything in the classpath.
I paste the Tomcat's localhost log:
*
apr 13, 2013 3:44:43 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
apr 13, 2013 3:44:43 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
apr 13, 2013 3:44:47 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache', 'org.apache.jasper.compiler.TldLocationsCache#189b904')
*
and the Tomcat strERR log:
*
2013-04-13 15:44:46 Commons Daemon procrun stderr initialized
apr 13, 2013 3:44:47 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Apache Software Foundation\Tomcat 7.0\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files\AMD APP\bin\x86;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files\NVIDIA Corporation\PhysX\Common;C:\oraclexe\app\oracle\product\10.2.0\server\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files\Windows Live\Shared;C:\Program Files\Autodesk\Backburner\;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files\Windows Kits\8.0\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;;.
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["http-bio-8080"]
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol init
INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 397 ms
apr 13, 2013 3:44:47 PM org.apache.catalina.core.StandardService startInternal
INFO: Starting service Catalina
apr 13, 2013 3:44:47 PM org.apache.catalina.core.StandardEngine startInternal
INFO: Starting Servlet Engine: Apache Tomcat/7.0.39
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\.metadata
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\docs
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\examples
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\host-manager
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\manager
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\ROOT
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\Servers
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\SpringMVC
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["http-bio-8080"]
apr 13, 2013 3:44:47 PM org.apache.coyote.AbstractProtocol start
INFO: Starting ProtocolHandler ["ajp-bio-8009"]
apr 13, 2013 3:44:47 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 540 ms
*
I'm EXHAUSTED, i'm since yesterday to fight with this project, please help me! :)

Answer 1

<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</context-param>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

Answer 2

This might probably cause due to lack of needed libraries.Following is a list of libraries which spring includes in it's template project(library versions might differ).
When moving forward you might experience that copying libraries is painful and there must be a better way to do this.
I have prepared a blog post on ,how to easily setup a springMVC project with the help of spring toolsuit plugin for eclipse.Hope it will be a very helpful reference for you.

Answer 3

What is actually in "C:\Program Files\Apache Software Foundation\Tomcat 7.0\webapps\SpringMVC" directory? Does it have webapp directory structure?
It seems that Tomcat does not detect your appServlet(org.springframework.web.servlet.DispatcherServlet) according to stdErr log.
If you deploy your SpringMVC app correctly, you should see the following messages in the log file:
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization started
...
...
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization completed in 725 ms

Answer 4

9 times out of 10, when I see the 404 error with Spring MVC, its usually because I fat-fingered the view name/path returned by my Controller.

Answer 5

Based on your code structure everything looks perfect.
Still if I were you, I would check the System.out.println() value to see whether the controller is really invoked or not and then I will make sure the location of home.jsp is correct.

Answer 6

Try changing the request mapping of controller method to :
#Controller
public class HomeController {
#RequestMapping(value = "home")
public String home() {
System.out.println("HomeController: Passing through...");
return "home";
}
}
Remove / from /home.
Also your web.xml does not seem to have context listener.
<context-param>
<param-name>contextConfigLocation</param-name><param-value>
/WEB-INF/spring/appServlet/spring-security.xml,
/WEB-INF/spring/appServlet/hibernate-config.xml
</param-value>
</context-param>
<!-- you seem to be missing this -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>appServlet</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>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>