Is there any way to read cookies from the response object in Java?

Question

It doesn\'t seem that HttpServletResponse exposes any methods to do this.

Right now, I\'m adding a bunch of logging code to a crufty and ill-understood servlet, in

Answer 1

I had the same problem where I was using a 3rd party library which accepts an HttpServletResponse and I needed to read back the cookies that it set on my response object. To solve that I created an HttpServletResponseWrapper extension which exposes these cookies for me after I make the call:

public class CookieAwareHttpServletResponse extends HttpServletResponseWrapper {

    private List cookies = new ArrayList();

    public CookieAwareHttpServletResponse (HttpServletResponse aResponse) {
        super (aResponse);
    }

    @Override
    public void addCookie (Cookie aCookie) {
        cookies.add (aCookie);
        super.addCookie(aCookie);
    }

    public List getCookies () {
        return Collections.unmodifiableList (cookies);
    }

} 

And the way I use it:

// wrap the response object
CookieAwareHttpServletResponse response = new CookieAwareHttpServletResponse(aResponse);

// make the call to the 3rd party library 
String order = orderService.getOrder (aRequest, response, String.class);

// get the list of cookies set
List cookies = response.getCookies();