请求范围的Bean未创建

Question

I don't know what I am missing, checked all the links which tells about request-scoped bean creation but I am missing something that's why request-scoped bean is not creating.

Here is request scoped bean class:

package com.spring.beans;

public class RequestScopedBean 
{
    public RequestScopedBean()
    {
        System.out.println("RequestScopedBean constructor");
    }   
    @Autowired
    HttpServletRequest request;

    public void getSessionId()
    {
        if(request != null)
        {
            System.out.println(request.getSession().getId());
        }
    }
}

Web.xml

<web-app>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/root-context.xml</param-value>
    </context-param>
    <listener>
        <listener-class>com.spring.systemaudit.OESLog4jListener</listener-class>
    </listener>
    <listener>
     <listener-class>se.jiderhamn.classloader.leak.prevention.ClassLoaderLeakPreventor</listener-class>
    </listener>  
    <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>
    <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>
    ...
</web-app>

and root-context.xml

...
<bean id="requestScopedBean" class="com.spring.beans.RequestScopedBean" scope="request">

</bean>
...

If I make scope="singleton" then bean is created because I can see sysout on console while starting server then why not with scope="request" . What I am missing?

Answer 1

I guess it's successfully created... but on request. The bean must be created on call a controller where the bean is used. Eg when you type localhost:8080/someRequestMapping your controller is triggered and if the Controller has a reference to your bean it is created.

By default the reference is a Proxy which creates Request scoped beans on demand.

On startup no request exists so the bean is not created (only proxy is created)