Spring JSON Response issue

I want to create some Spring based REST service sample. I want to get JSON based on Foo object, but when I try to send request using curl, it shows 406 error: "The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers.". Here is my code: RestControl.java

package hello;

import org.springframework.stereotype.*;

import org.springframework.web.bind.annotation.*;

@Controller
@RequestMapping("/app")
public class RestControl {
    @RequestMapping(value="/get",produces="application/json", method=RequestMethod.GET)
    @ResponseBody
    public Foo getFoo(){
        Foo f = new Foo();
        f.setId(new Long(1));
        f.setName("lol");
        return f;
    }
}

Foo.java:

package hello;

public class Foo {
    private Long id;
    private String name;

    public void setId(Long id){
        this.id=id;
    }

    public void setName(String name){
        this.name=name;
    }

    public Long getId(){
        return this.id;
    }

    public String getName(){
        return this.name;
    }

}

web.xml:

<web-app id="WebApp_ID" version="2.4"
    xmlns="http://ift.tt/qzwahU" xmlns:xsi="http://ift.tt/ra1lAU"
    xsi:schemaLocation="http://ift.tt/qzwahU 
    http://ift.tt/16hRdKA">

    <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>

</web-app>

mvc-dispatcher-servlet.xml:

<beans xmlns="http://ift.tt/GArMu6"
    xmlns:context="http://ift.tt/GArMu7"
    xmlns:xsi="http://ift.tt/ra1lAU"
    xmlns:tx="http://ift.tt/OGfeU2"
    xmlns:aop="http://ift.tt/OpNdV1"
    xmlns:mvc="http://ift.tt/1bHqwjR"
    xsi:schemaLocation="
        http://ift.tt/GArMu6     
        http://ift.tt/1cMYE2s
        http://ift.tt/GArMu7 
        http://ift.tt/QEDs1k
        http://ift.tt/OGfeU2 
        http://ift.tt/KC395X
        http://ift.tt/1bHqwjR
        http://ift.tt/1bVJL9q">


    <mvc:annotation-driven />

    <bean id="RestControl" 
          class="hello.RestControl" />

    <bean id="foo"
          class="hello.Foo" />

</beans>