A problem with Set-Cookie

[Alejandro Barrero]

I am writing a web application where I want to use Cookies. I Managed to learn how to create Cookies, but know I need to receive a Cookie in a Swing Controller; after many hours in the Internet I have only found references that I should use "Set-Cookie:name=userName" in HTTP response header, but I have not been able to determine how to do it. Do I do it in HTML or in Java Script? I haven't found anything.

[Norm Radder]

There is some discussion here:  https://stackoverflow.com/questions/44222643/building-an-http-response-header

[Paul Clapham]

Apart from that link, here's some basic information. An HTTP response header is part of an HTTP response, which will be sent by your server in response to an HTTP request.

So I'm a bit confused by your post. First... you're writing a web application. So that would be the server part of the client-server relationship, right? But then... you need to receive a cookie in a Swing controller. That sounds a lot like the client part.

Anyway the cookie is generated and sent by the server. So JavaScript isn't going to be involved (unless you're using server-side JavaScript, that is). And neither is HTML, because the HTTP response headers are sent before the response body, which is where any HTML would be located.

Does this help?

[Norm Radder]

A cookie can also be sent in the request header.
https://stackoverflow.com/questions/57116725/java-how-to-get-and-add-cookies-to-request-header-correctly

[Paul Clapham]

True enough. So clarification of requirements is definitely needed.

[Alejandro Barrero]

Thanks to all for the replies. First I apologize for writing "Swing" where I should have written "Spring".
In my controller I have

	@GetMapping("/Terminate")
	public String Terminate(@CookieValue(value = "username", defaultValue = "Atta") String username) {
		return "Admin/GetLicenses"; // logical view name
	}

But so far I am only getting "Atta".

Thanks too for the links, but I didn't find the answer there.

Yesterday, I found something promising in a web page https://community.apigee.com/questions/6587/modify-set-cookie-header-addchange-in-javascript.html; it says
"I am able to set multiple cookies in JavaScript callouts,

example which works:

context.setVariable('response.header.set-cookie.1',
  'Oatmeal=delicious; path=/;');
context.setVariable('response.header.set-cookie.2',
  'Trefoil=donotwant; path=/;');
 
resulting outbound response headers:
Set-Cookie: Oatmeal=delicious; path=/;
Set-Cookie: Trefoil=donotwant; path=/;"

Unfortunatelly, the JavaScript code

		function setCookie() {
			context.setVariable('response.header.set-cookie.1', 'userName=xxx');
		}

Run on a click to Submmit does't work because "context" is not define.

[Tim Holloway]

https://dzone.com/articles/how-to-use-cookies-in-spring-boot

[Paul Clapham]

Alejandro Barrero wrote:First I apologize for writing "Swing" where I should have written "Spring".

Ah! So let's put this thread into the Spring forum.

[Alejandro Barrero]

Thanks to all, but I solved my problem without a cookie; the web page just returns the userName  with a thymeleaf variable

		<form class="form" th:action="@{/Terminate(userName=${userName})}"
>

The controller gets the value as a request param

	@GetMapping("/licenses")
	public String licenses(@RequestParam String fullName, Model map) {
		map.addAttribute("fullName", fullName);
		return "Admin/GetLicenses"; // logical view name
	}