How to get cookie in filter rest api jersey

Question

I am sending cookie from a client in Rest API request and I want to read on a filter. I am using this code on the filter for retrieving the cookies.

Map<String, Cookie> cookies  = requestContext.getCookies();
Cookie cookie = cookies.get("token");
String token = cookie.getValue();

But it returns null. Can anyone suggest me how can I retrive cookie on filter.

Answer 1

In order to retrieve your cookie, you should do the following:

for (Cookie c : requestContext.getCookies().values()) 
{
    if (c.getName().equals("token")) {
        cookie = c;
        break;
    }
}

Honestly, I don't know why you could not retrieve your cookie by its key, since the ContainerRequestContext documentation states that getCookies returns a read-only map of cookie name (String) to Cookie.