Question

My system is Spring MVC based and I checked that Spring automatically sets PRAGMA: no-cache. The system is available to the users through SSL. When the users try to download something using the INTERNET EXPLORER 7 or 8 an error like “Internet Explorer cannot download file from server” appears (more details: http://support.microsoft.com/default.aspx?scid=KB;EN-US;q316431&).

I tried to configure the WebContentInterceptor like the code bellow but does not work:

<mvc:interceptors>
    <bean id="webContentInterceptor" class="org.springframework.web.servlet.mvc.WebContentInterceptor">
        <property name="cacheSeconds" value="2100" />
        <property name="useExpiresHeader" value="false" />
        <property name="useCacheControlHeader" value="false" />
        <property name="useCacheControlNoStore" value="false" />
    </bean>
</mvc:interceptors>

What can I do avoid Spring send the Pragma: no-cache and related to Cache Control?

Regards!

Answer 1

You can write your own custom interceptor and set the header values to the response object. Interceptors are nothing but filters so override the filter and use the

prehandle and posthandle to set the request and response headers respectively.

Let me know if you want specific examples doing that.

<mvc:interceptors>
    <mvc:interceptor>
        <mvc:mapping path="/**" />
        <beans:bean id="customInterceptor"
            class="org.example.interceptors.CustomInterceptor">
        </beans:bean>
    </mvc:interceptor>

</mvc:interceptors>




 public class CustomInterceptor implements HandlerInterceptor{

     public void postHandle(HttpServletRequest request, HttpServletResponse response, Object arg2, ModelAndView modelAndView) throws Exception {
     response.setHeader(...);}
}