использовать Spring mvc3 @ResponseBody имел 415 неподдерживаемый тип носителя, почему?

spring xml:

  <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="mediaTypes">
        <map>
            <entry key="atom" value="application/atom+xml" />
            <entry key="html" value="text/html" />
            <entry key="json" value="application/json" />
        </map>
    </property>
    <property name="viewResolvers">
        <list>
            <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
            <bean
                class="org.springframework.web.servlet.view.InternalResourceViewResolver">
                <property name="prefix" value="/WEB-INF/views/" />
                <property name="suffix" value=".jsp" />
            </bean>
        </list>
    </property>
    <property name="defaultViews">
        <list>
            <bean
                class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
        </list>
    </property>
</bean>

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

 <mvc:annotation-driven />

 <context:annotation-config />

 <context:component-scan base-package="org.lxh"></context:component-scan>

и код :

 @RequestMapping(value = "/2wt/test.do",method=RequestMethod.POST)
public @ResponseBody
Map<String, ? extends Object> create(
        @RequestBody WtStandartype wtStandartype) {
    System.out.println(wtStandartype.getId() + "--------");
    return Collections.singletonMap("id", wtStandartype.getId());

}

javascript:

   jQuery.ajax({
                'type': 'POST',
                'url': '/2wt/test.do',//'WtStandardTypeList.do?addto=updb',
                'contentType': 'application/json',
                'data': JSON.stringify(jsonuserinfo),
                'dataType': 'json',
                'error':function(){
                    alert(222);
                },
                'success': function(){
                    alert(33333);
                }
            });

web.xml:

  <?xml version="1.0"?>
  <web-app>
<display-name>jbpm</display-name>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:config/spring/applicationContext.xml
    </param-value>
    <description>Spring config file locations</description>
</context-param>


<listener>
    <listener-class>com.gzgi.framework.context.StartupListener</listener-class>
</listener>

<listener>
    <listener-class>com.gzgi.framework.startup.ShutdownListener</listener-class>
</listener>

<listener>
    <listener-class>com.gzgi.framework.context.UserOnlineListener</listener-class>
</listener>

<listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>

<listener>
    <listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap</listener-class>
</listener>

<filter>
    <filter-name>EncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter
    </filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>

<filter>
    <filter-name>compressionFilter</filter-name>
    <filter-class>com.gzgi.framework.web.filter.GZIPFilter</filter-class>
</filter>

<filter-mapping>
    <filter-name>EncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
    <filter-name>compressionFilter</filter-name>
    <url-pattern>*.css</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>compressionFilter</filter-name>
    <url-pattern>*.js</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>compressionFilter</filter-name>
    <url-pattern>*.html</url-pattern>
</filter-mapping>

<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>com.gzgi.framework.web.SpringDispatcherServlet</servlet-class>
    <load-on-startup>5</load-on-startup>
</servlet>

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

<servlet>
    <servlet-name>resteasy</servlet-name>
    <servlet-class>com.gzgi.framework.web.SpringDispatcherServlet</servlet-class>
    <load-on-startup>6</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>resteasy</servlet-name>
    <url-pattern>/rs/*</url-pattern>
</servlet-mapping>


<session-config>
    <session-timeout>3600</session-timeout>
</session-config>


</web-app>

Я отправляю ajax из, но вид firefox - 415 Неподдерживаемый тип носителя

lib имел jackson-mapper-asl-1.5.6.jar jackson-core-asl-1.5.6. jar spring version - 3.03

Почему отправить не удалось?