406 Non acceptable dans l'application Spring MVC (OSGi, Virgo Web Server) utilisant Jackson, Rome et JAXB2

Je viens de commencer l'apprentissage de la Vierge Serveur Web.
Je suis en train de travailler avec Jakcson JSON dans Spring MVC de l'application.
À ce stade, je ne peux pas obtenir une demande d'OBTENIR les objets sérialisés.
Le serveur renvoie "406 not Acceptable":

The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers ().

Le même problème se pose lors de l'utilisation de Rome et JAXB2.

Voici les fichiers de configuration du projet et le code:

Fragment pom.xml:

<dependency>
  <groupId>org.codehaus.jackson</groupId>
  <artifactId>com.springsource.org.codehaus.jackson</artifactId>
  <version>1.0.0</version>
</dependency>
<dependency>
  <groupId>org.codehaus.jackson</groupId>
  <artifactId>com.springsource.org.codehaus.jackson.mapper</artifactId>
  <version>1.0.0</version>
</dependency>

MANIFESTE.MF

Manifest-Version: 1.0
Import-Bundle: com.springsource.org.apache.taglibs.standard;version="[
 1.1.2,1.3)",com.springsource.org.codehaus.jackson;version="[1.0.0,1.0
 .0]",com.springsource.org.codehaus.jackson.mapper;version="[1.0.0,1.0
 .0]"
Bundle-Version: 2.3.0
Tool: Bundlor 1.0.0.RELEASE
Bundle-Name: GreenPages Web
Import-Library: org.springframework.spring;version="[3.0, 3.1)"
Bundle-ManifestVersion: 2
Bundle-SymbolicName: greenpages.web
Web-ContextPath: greenpages
Import-Package: javax.servlet.jsp.jstl.core;version="[1.1.2,1.2.0)",ja
 vax.sql,org.apache.commons.dbcp,org.eclipse.virgo.web.dm;version="[2.
 0.0, 3.0.0)",org.springframework.core.io;version="[3.0.0.RELEASE,3.1.
 0)",org.springframework.stereotype;version="[3.0.0.RELEASE,3.1.0)",or
 g.springframework.ui;version="[3.0.0.RELEASE,3.1.0)",org.springframew
 ork.web.bind.annotation;version="[3.0.0.RELEASE,3.1.0)",org.springfra
 mework.web.servlet.mvc.annotation;version="[3.0.0.RELEASE,3.1.0)",org
 .springframework.web.servlet.view;version="[3.0.0.RELEASE,3.1.0)"

web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">

  <welcome-file-list>
    <welcome-file>/WEB-INF/pages/index.jsp</welcome-file>
  </welcome-file-list>

  <!-- CONFIGURE A PARENT APPLICATION CONTEXT -->
  <context-param>
    <param-name>contextClass</param-name>
    <param-value>org.eclipse.virgo.web.dm.ServerOsgiBundleXmlWebApplicationContext</param-value>
  </context-param>

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/applicationContext.xml</param-value>
  </context-param>

  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- DISPATCHER SERVLET CONFIG -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

</web-app>

dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<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:mvc="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <context:component-scan base-package="greenpages.web"/>

    <!-- Configures the @Controller programming model -->
    <mvc:annotation-driven />

    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

GreenPagesController.java

package greenpages.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class GreenPagesController {

 @RequestMapping("/home.htm")
 public void home() {
 }

 //MappingJacksonHttpMessageConverter (requires Jackson on the classpath - particularly useful for serving JavaScript clients that expect to work with JSON)
 @RequestMapping(value="/json.htm", method=RequestMethod.POST)
 public @ResponseBody String readJson(@RequestBody JavaBean bean) {
  return "Read from JSON " + bean;
 }

 @RequestMapping(value="/json.htm", method=RequestMethod.GET)
 public @ResponseBody Object writeJson() {
  return new Object();
 }

}

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
   <title>Simple jsp page</title>
   <script type="text/javascript" src="/greenpages/scripts/jquery-1.4.4.min.js"></script>
   <script type="text/javascript">
  $.getJSON("json.htm", function(message) {
   console.log(message);
  });
   </script>
  </head>
  <body>

  <form action="test.htm" method="get">
      <input type="text" name="name">
      <input type="submit">
  </form>

  </body>
</html>

Requête AJAX http://localhost:8080/greenpages/json.htm:
En-Têtes de demande de Firebug:

GET /greenpages/json.htm HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
X-Requested-With: XMLHttpRequest
Referer: http://localhost:8080/greenpages/
Cookie: JSESSIONID=18000E4E096D7978F61F5D1E8105B784; JSESSIONID=35FB0925786699EC587A1B64F30517AD

En-Têtes De Réponse:

HTTP/1.1 406 Not Acceptable
Server: Apache-Coyote/1.1
Content-Type: text/html;charset=utf-8
Content-Length: 1070
Date: Tue, 07 Dec 2010 11:15:58 GMT

Dans ce qui pourrait être le problème?

source d'informationauteur Alexey