如何在 Play Framework 2.5.x /Java 中删除（会话）cookie

Question

I am using Play 2.5.3. I want to remove a session-cookie when user did some specific actions.

My cookie is like this.

// Cookie: name, value, maximum age, path, domain, secure, http only Cookie("name", somestring, null, "/", somedomain, false, false)

I have already tried what Play documents showed.

request().discardCookie(name, path, domain)

Turns out it doesn't work. What should I try next. Any help will be appreciated.

Answer 1

你需要使用

response().discardCookie("name");

Answer 2

in scala you need to pass DiscardingCookie instance as follows: response.discardingCookies(DiscardingCookie("cookie_name"))

see maybe similar class is available in Java api.

Answer 3

As of play 2.8, Http.Context got discontinued. You can now instead use

return ok().discardingCookies("COOKIE_NAME");

So basically any changes to the response needs to be applied to the result object your function returns directly, instead of interacting with the old response() method.

Answer 4

我认为你应该使用

response.removeCookie(keyName);

Answer 5

Cookie c = new Cookie("name", "", 0, somepath, somedomain, false, false);
return ok().withCookies(c);

It turns out, ↑ works out.

Try to set the value to "", and the maxAge to 0. Set everything else what they were .

The new cookie should replace the old one. And vanished since the maxAge is 0.

Hope this could help someone. Lol