Spring 4 mvc HTTP 404 rsource not found

Question

I am new in Spring and i try a simple mvc example with java configuration. I receive an HTT 404 error when requesting my home page.

Spring 4, Tomcat 8.5, Eclipse Here comes my code

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" 
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
         http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>SpringProject</groupId>
    <artifactId>SpringProject</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>SpringProject</name>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <warSourceDirectory>WebContent</warSourceDirectory>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <properties>
        <spring.version>4.3.4.RELEASE</spring.version>
    </properties>
    <dependencies>
        <dependency>
            <groupd>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
    </dependencies>
</project>

DispacherServlet.java

package arnaud.spring.configuration;

public class DispatcherServletForMVC extends AbstractAnnotationConfigDispatcherServletInitializer {

    protected String[] getServletMappings(){
        return new String[]{"/"};
    }

    @Override
    protected Class<?>[] getRootConfigClasses() {
        System.out.println("dans initialisation root");
        return null;        
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        System.out.println("dans initialisation servlet");
        return new Class<?>[] {WebConfig.class};
    }
}

WebConfig class

package arnaud.spring.configuration;
@Configuration
@EnableWebMvc
@ComponentScan(basePackages="arnaud.spring")
public class WebConfig extends WebMvcConfigurerAdapter {

    //define the view resolver
    @Bean
    public ViewResolver viewResolver(){
        System.out.println("view resolver");
        InternalResourceViewResolver resolver= new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        resolver.setExposeContextBeansAsAttributes(true);
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer){
        configurer.enable();
        System.out.println("default handling");
    }
}

Now my controller...

package arnaud.spring.controllers;
@Controller
public class HomeController {

    @RequestMapping(value="/",method=RequestMethod.GET)
    public String home(){
        System.out.println("dans controller");
        return "HomePage";
    }
}

My HomePage.jsp located in WEB-INF/views

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
                      "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix ="c" %>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>Home Page</title>
    </head>
    <body>
        <a ref="<c:url value="/listinvoice"/>">list invoice</a>
        <a ref="<c:url value="/listinvoice/register"/>">register</a>
    </body>
</html>

Finally what i can see in the Eclipse console

mars 03, 2017 4:05:48 PM org.apache.tomcat.util.digester.SetPropertiesRule begin AVERTISSEMENT: [SetPropertiesRule]{Server/Service/Engine/Host/Context}
Setting property 'source' to 'org.eclipse.jst.jee.server:SpringMVCProject' did not find a matching property. mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server version: Apache Tomcat/8.5.6 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server built: Oct 6 2016 20:15:31 UTC mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Server number: 8.5.6.0 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: OS Name: Windows 10 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: OS Version: 10.0 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Architecture: amd64 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: Java Home: C:\\Program Files\\Java\\jre1.8.0_111 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: JVM Version: 1.8.0_111-b14 mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log INFOS: JVM Vendor: Oracle Corporation mars 03, 2017 4:05:48 PM org.apache.catalina.startup.VersionLoggerListener log mars 03, 2017 4:05:50 PM org.apache.catalina.core.ApplicationContext log INFOS: 1 Spring WebApplicationInitializers detected on classpath dans initialisation root dans initialisation servlet mars 03, 2017 4:05:51 PM org.apache.catalina.core.ApplicationContext log INFOS: Initializing Spring FrameworkServlet 'dispatcher' mars 03, 2017 4:05:51 PM org.springframework.web.servlet.DispatcherServlet initServletBean INFOS: FrameworkServlet 'dispatcher': initialization started mars 03, 2017 4:05:51 PM org.springframework.web.context.support.AnnotationConfigWebApplicationContext prepareRefresh INFOS: Refreshing WebApplicationContext for namespace 'dispatcher-servlet':
startup date [Fri Mar 03 16:05:51 CET 2017]; root of context hierarchy mars 03, 2017 4:05:51 PM org.springframework.web.context.support.AnnotationConfigWebApplicationContext loadBeanDefinitions INFOS: Registering annotated classes: [class arnaud.spring.configuration.WebConfig] mars 03, 2017 4:05:52 PM org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter initControllerAdviceCache INFOS: Looking for @ControllerAdvice: WebApplicationContext for namespace 'dispatcher-servlet': startup date [Fri Mar 03 16:05:51 CET 2017]; root of context hierarchy mars 03, 2017 4:05:52 PM org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping register INFOS: Mapped "{[/],methods=[GET]}" onto public java.lang.String arnaud.spring.controllers.HomeController.home() default handling mars 03, 2017 4:05:52 PM org.springframework.web.servlet.handler.SimpleUrlHandlerMapping registerHandler INFOS: Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler] view resolver mars 03, 2017 4:05:53 PM org.springframework.web.servlet.DispatcherServlet initServletBean INFOS: FrameworkServlet 'dispatcher': initialization completed in 2087 ms mars 03, 2017 4:05:55 PM org.apache.jasper.servlet.TldScanner scanJars INFOS: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. mars 03, 2017 4:05:57 PM org.apache.coyote.AbstractProtocol start INFOS: Starting ProtocolHandler [http-nio-8085] mars 03, 2017 4:05:57 PM org.apache.coyote.AbstractProtocol start INFOS: Starting ProtocolHandler [ajp-nio-8008] mars 03, 2017 4:05:57 PM org.apache.catalina.startup.Catalina start INFOS: Server startup in 9320 ms

I call the page with the following url, my tomcat in Eclipe in on port 8085

http://localhost:8085/SpringMVCProject/ or http://localhost:8085/SpringMVCProject

with same result:HTTP 404

Thanks very much for helping me solving this issue.

Answer 1

You need to Map your Dispatcher Servlet in the web.xml and your web config class this is using the Default dispatcher you need to replace with yours

       <servlet>
<servlet-name>dispatch</servlet-name>
<servlet-class>
    org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
  <param-name>contextClass</param-name>
  <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</init-param>
<init-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>arnaud.spring.configuration.WebConfig</param-value>
</init-param>

Like this

 <servlet>
<servlet-name>dispatch</servlet-name>
<servlet-class>
        arnaud.spring.configuration.DispatcherServletForMVC
</servlet-class>
<init-param>
  <param-name>contextClass</param-name>
  <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</init-param>
<init-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>arnaud.spring.configuration.WebConfig</param-value>
</init-param>