Spring MVC example not working

Question

I'm in trouble and would like your help. I'm a beginner in Spring MVC (and Spring at all). I have followed the http://www.mkyong.com/spring3/spring-3-mvc-hello-world-example/ but it isn't working on. I added a welcome file (index.jsp). When i enter (http://localhost:8080/SpringMVC) all right. But when i add the controller pattern (http://localhost:8080/SpringMVC/welcome), it doesn't work (HTTP Status 404). Here my configs:

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>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>mvc-dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

mvc-dispatcher-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
    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">
    <context:component-scan base-package="com.mkyong.common.controller" />
    <bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/pages/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>
</beans>

and my folder structure is:

-> src
   -> main
      -> java
         -> com
            -> mkyong
               -> common
                  -> controller
                     -> HelloController.java
      -> resources
      -> webapp
         -> index.jsp
         -> WEB-INF
            -> mvc-dispatcher-servlet.xml
            -> web.xml
            -> pages
               -> hello.jsp

Someone can help me?

Can I recommend turning the log level to DEBUG and seeing what Spring prints out - if Spring DispatcherServlet gets the request then you will see a lot of information in the logs that should clearly indicate what is going wrong. — Biju Kunjummen, Aug 06 '12 at 19:01
Try placing this content in a log4j.properties file in the classpath - log4j.rootLogger=trace, stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p %c - %m%n — Biju Kunjummen, Aug 06 '12 at 19:17
When i enter **http://localhost:8080/SpringMVC** he says: **WARN: No mapping found for HTTP request with URI [/SpringMVC/] in DispatcherServlet with name 'mvc-dispatcher'**. — mnatan.brito, Aug 06 '12 at 19:27
Very good, now it is little more clear - So your context is deployed at root context (`/`) not `/SpringMVC`, try the first answer and see what message you get http://localhost:8080/welcome — Biju Kunjummen, Aug 06 '12 at 19:29

score 1 · Answer 1 · answered Aug 06 '12 at 18:08

1

404 means that the requested resource cannot be found. Make sure your controller is annotated with:

@Controller and @RequestMapping("/welcome")

From the link:

@Controller
@RequestMapping("/welcome")
public class HelloController {

    @RequestMapping(method = RequestMethod.GET)
    public String printWelcome(ModelMap model) {

        model.addAttribute("message", "Spring 3 MVC Hello World");
        return "hello";

    }

}

answered Aug 06 '12 at 18:08

Chander Shivdasani

9,878
20
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The class **HelloController** is marked with **@Controller, RequestMapping** as it must be. – mnatan.brito Aug 06 '12 at 18:24

MStodd · Answer 2 · 2012-08-06T18:57:16.270

0

You have your servlet mapped to '/', and the controller you want to hit is accepting requests for '/welcome'

The request you need to make should be (http://localhost:8080/welcome). I don't know why he has that extra 'SpringMVC' in his example.

Also, add <mvc:annotation-driven/> to your mvc-dispatcher-servlet.xml to make sure it's using annotations on your controller(s). And add the mvc XML namespace also. My namespaces look like this:

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/security
    http://www.springframework.org/schema/security/spring-security-3.1.xsd">

I would suggest getting rid of that welcome file until you have your controller working correctly to keep things simple

edited Aug 06 '12 at 18:57

answered Aug 06 '12 at 18:16

MStodd

4,716
3
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Making such request **http://localhost:8080/welcome** still returns HTTP Status 404. I don't know what is happening. – mnatan.brito Aug 06 '12 at 18:36
What version of spring are you using? – MStodd Aug 06 '12 at 18:37
**3.0.5.RELEASE** according to the **pom.xml**. – mnatan.brito Aug 06 '12 at 18:41
@mnatan.brito edited answer. try adding mvc annotation stuff – MStodd Aug 06 '12 at 19:01
Are you talking about **@Controller, @RequestMapping**? – mnatan.brito Aug 06 '12 at 19:09
Yeah. I have a very similar project and have the tag in my servlet config. When I remove it, I get 404s. According to this answer, there are two ways of getting annotations to work: http://stackoverflow.com/a/3978283/78716 – MStodd Aug 06 '12 at 19:30

score 0 · Answer 3 · edited Aug 07 '12 at 20:35

0

You must have a Controller mapped to "/".

@Controller
@RequestMapping("/")
public class StartController {

  @RequestMapping(method = RequestMethod.GET)
  public String printWelcome(ModelMap model) {

    model.addAttribute("message", "Spring 3 MVC Hello World");
    return "hello";

  }

}

edited Aug 07 '12 at 20:35

Rüdiger Hanke

6,215
2
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answered Aug 07 '12 at 20:00

user1171171

1
5

Omkar Ayachit · Answer 4 · 2017-05-31T12:33:09.117

0

Include this library on your view to enable ${}

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

This will solve your problem.

edited May 31 '17 at 12:33

answered May 31 '17 at 12:26

Omkar Ayachit

1
2

Spring MVC example not working

4 Answers4