Reactive Webclient - spring

Question

I would like to programmatically login to a web application using reactive web client . I could see I am authenticated correctly but could not able to reach redirected url.
I access my application http://localhost:8080/myapplogin
Here my web client response will have a Location header http://localhost:8082/portal/auth/home , and I would like the browser to redirect to this url
I could see the application in 8082 authenticating and redirecting(/auth/home) but do not know how to make my web client return the response and do the redirection through browser. Can someone help
#GetMapping("/myapplogin")
Publisher<ClientResponse> mylogin() {
MultiValueMap<String, String> formData = new LinkedMultiValueMap<>();
formData.add("username", "testuser");
formData.add("password", "test password");
return WebClient.create()
.post()
.uri("http://localhost:8082/portal/auth/login")
.contentType(MediaType.APPLICATION_FORM_URLENCODED)
.body(BodyInserters.fromFormData(formData))
.exchange();
}

Answer 1

You need to return status codes that start with 3, and a Location header holding the URL to redirect to.
#GetMapping("/myapplogin")
public Mono<ResponseEntity> mylogin() {
return login()
.map(res -> ResponseEntity
.status(HttpStatus.PERMANENT_REDIRECT)
.location(URI.create("/auth/home"))
.build()
);
}
where login is
Mono<ClientResponse> login() {
MultiValueMap<String, String> formData = new LinkedMultiValueMap<>();
formData.add("username", "testuser");
formData.add("password", "test password");
return WebClient.create()
.post()
.uri("http://localhost:8082/portal/auth/login")
.contentType(MediaType.APPLICATION_FORM_URLENCODED)
.body(BodyInserters.fromFormData(formData))
.exchange();
}