Spring framework configuration

Question

It has been 3 days since I started learning about Spring Framework and trying to implement a RESTful web service with MongoDB and Spring Framework. I am still at the beginning and trying to understand the configuration of Spring Framework. When I start my project and hit the desired URL it is not working. I have also upload my project to github (here is the url)

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         id="WebApp_ID"
         version="2.4"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
                             http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <servlet>
        <servlet-name>spring</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>spring</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:context="http://www.springframework.org/schema/context" 
       xmlns:mvc="http://www.springframework.org/schema/mvc"   
       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
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    <!-- Activates various annotations to be detected in bean classes -->
    <context:annotation-config />
    <!-- Scans the classpath for annotated components that will be auto-registered as Spring beans.
     For example @Controller and @Service. Make sure to set the correct base-package-->
    <context:component-scan base-package="shoponway.webservice" />
    <!-- Configures the annotation-driven Spring MVC Controller programming model.
    Note that, with Spring 3.0, this tag works in Servlet MVC only!  -->
    <mvc:annotation-driven />
    <!-- Loads MongoDB configuraton -->
    <import resource="mongo-config.xml" />
</beans>

spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
       xmlns:p="http://www.springframework.org/schema/p" 
       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">
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" />
</beans>

and my controller

@Controller
public class PersonController {
    protected Logger logger = Logger.getLogger(PersonController.class);

    @Resource(name = "personService")
    private PersonService personService;

    @RequestMapping(value = "/allpersons", method = RequestMethod.GET)
    public String getAllPersons(Model model){
        model.addAttribute("persons", personService.getAllPersons());
        return "personspage";
    }
}

The error I am getting

 java.lang.ClassNotFoundException: org.springframework.web.context.ContextLoaderListener
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:529)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:511)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:139)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4888)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)

are you getting any error. is your context getting up properly ? — Santosh Joshi
– Santosh Joshi, Commented Mar 2, 2014 at 11:03
Well, the error message is pretty clear: you did not define the "personService" bean in your context. — kryger
– kryger, Commented Mar 2, 2014 at 11:18
where can I define it and how? in applicationContext.xml or spring-servlet.xml? — Emilla
– Emilla, Commented Mar 2, 2014 at 11:20
You are using a very old version of Spring, and I recommend looking at the JavaConfig option and Spring Boot. They make configuration a lot simpler and are an easier starting point. — chrylis -cautiouslyoptimistic-
– chrylis -cautiouslyoptimistic-, Commented Mar 2, 2014 at 11:40

Santosh Joshi · Accepted Answer · 2014-03-02 13:11:56Z

2

There are multiple problems in this example, which can be corrected as follows

add @Service anotation to your shoponway.webservice.services.PersonService class, you need to add @Service for making it a proper candidate for injection.
Your 'mongo-config.xml' is pointing to wrong mongo repository locations edit it to <mongo:repositories base-package="shoponway.webservice.services" /> from
<mongo:repositories base-package="org.krams.tutorial.repositories" />
Mongo template should refer to following bean <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate"> not with class="org.springframework.data.document.mongodb.MongoTemplate"

4) replace mongo-config.xml content with

<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:mongo="http://www.springframework.org/schema/data/mongo"
xsi:schemaLocation="http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context-3.0.xsd
      http://www.springframework.org/schema/data/mongo
      http://www.springframework.org/schema/data/mongo/spring-mongo-1.0.xsd
      http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<mongo:mongo host="localhost" port="27017" />
<mongo:db-factory dbname="shoponwaydb" />

<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
    <constructor-arg name="mongoDbFactory" ref="mongoDbFactory" />
</bean>

 </beans>

`

Once your correct these , you will be able to run your example easily:

edited Mar 2, 2014 at 13:11

answered Mar 2, 2014 at 11:24

Santosh Joshi

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19 Comments

Emilla Over a year ago

I did everything you told. And I am still getting an error but at least this error trace is small. I insert new error trace.

Santosh Joshi Over a year ago

check for spring-web.3.2.0.RELEASE jar in your target/WEB-INF/lib folder

Santosh Joshi Over a year ago

Its running fine for me, with these changes only i am able to run this example. Please check the jars you was in your WEB-INF/lib folder

Emilla Over a year ago

as I updated spring dependencies in pom, I have spring-web.4.0.2.RELEASE jar in target/WEB-INF/lib folder.

Emilla Over a year ago

Really so weird. After I applied the changes you told, maven throws "Unable to configure" error. Altough I can see maven dependencies in project structure, I can not see them in Deployment Assembly

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