Question

I’m using Spring MVC with Freemarker as view technologie. I have a TemplateDirectiveModel object which needs to access Spring’s RequestContext within the execute method. Currently I do it like this:

public class MyDirective implements TemplateDirectiveModel
{
    public void execute(Environment env, Map params, TemplateModel[] loopVars,
        TemplateDirectiveBody body) throws TemplateException, IOException
    {
        StringModel model = (StringModel) env.getGlobalVariable("springMacroRequestContext");
        RequestContext requestContext = (RequestContext) model.getWrappedObject();
    }
}

But I can’t believe that this is the right way to do it. I have the feeling I missed something important. Maybe there are special classes and annotations for handling Freemarker direcives in Spring? Maybe I can let Spring inject something into the directive class with which I can access Springs request scope?

Answer 1

You could subclass FreeMarkerConfigurer, overriding its postProcessConfiguration(Configuration config)method.
Your implementation would just put a request-aware dependency in the configuration, as a shared variable for example (as preconised by the FM documentation).

Should do the trick, Spring-style…