Cache-Control headers problem after updating Spring from 3.0.2 to 3.0.1 release

Hello
I have a problem with Cache-Control headers after updating Spring from 3.0.1 to 3.0.2.
I have a contoller (without annotations) inheriting from MultiActionController :

Code:

---

public class JsonControler extends MultiActionController{
 
public ModelAndView getTheme(HttpServletRequest request, HttpServletResponse response) throws Exception {
        ModelAndView modelAndView = new ModelAndView();
        List<MeaDTO> meaList = getService().getTheme();
        modelAndView.addObject(RESPONSE,meaList);
        setCacheControl(response, getWebappConfig().getCacheControlByKey("json.getTheme"));
        return modelAndView;
}
 
protected void setCacheControl(HttpServletResponse response, final int pCacheValue) {
        if (pCacheValue != -1) {
                applyCacheSeconds(response, pCacheValue);
        }
        response.addHeader("Cache-Control", "stale-while-revalidate=" + webappConfig.getCacheStaleWhileRevalidate());
}
...
}

---

The url mapping and the url rewriting are defined in the Spring configuration context
file

Code:

---

<bean id="urlMapping"
        class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
                <props>
                        <prop key="/catalog/**/*.do-json">jsonControler</prop>
                </props>
        </property>
</bean>

---

Code:

---

<rule match-type="regex">
        <from>^/catalog/home/theme.json$</from>
        <to>getTheme.do-json</to>
</rule>

---

When I specify the cache-control headers with setCacheControl (=> applyCacheSeconds from WebContentGenerator spring bean) there are inconsistent headers.

In Spring 3.0.1, it's OK:

Code:

---

Expires : Tue, 16 Aug 2011 xxxx GMT
Cache-Control:max-age=1800, stale-while-revalidate=3600

---

In Spring 3.0.2, it's KO, there are 2 expiration dates and additional cache-control parameters :

Code:

---

Expires : Tue, 16 Aug 2011 xxxx GMT, Tue, 01 Jan 1970 xxx GMT
Cache-Control:max-age=1800, stale-while-revalidate=3600, no-cache, no-store, max-age=0

---

Is it a regression of Spring 3.0.2 ?