XMLHttpRequest blocked by CORS policy annotation #CrossOrigin - spring

Question

Access to XMLHttpRequest at 'http://localhost:8080/api/auth/signup' from origin 'https://mysuite.ru' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request.
http.cors().and()
.exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
.authorizeRequests()
.antMatchers("/admin").hasRole("ADMIN")
.antMatchers("/").permitAll()
.antMatchers("/favicon.ico").permitAll()
.antMatchers("/static/**").permitAll()
.antMatchers("/manifest.json").permitAll()
.antMatchers("/logo192.png").permitAll()
.antMatchers("/api/auth/**").permitAll()
.antMatchers("/api/test/**").permitAll()
.anyRequest().authenticated();
http.addFilterBefore(authenticationJwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
#RestController
#RequestMapping("/api/auth")
#CrossOrigin(origins = "*", maxAge = 3600)
public class AuthController {
Redirecting via nginx
server {
listen 443 ssl;
server_name is my address.ru;
ssl_certificate C:/ssl/ip.crt;
ssl_certificate_key C:/ssl/ip.key;
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://localhost:8080;
proxy_set_header Host $http_host;
proxy_redirect off;
}
}
UPDATE
Request Headers:
Accept: application/json, text/plain, */*
Access-Control-Allow-Headers: DNT,User-Agent,X-Requested-With,If-
Modified-Since,Cache-Control,Content-Type,Range
Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: Content-Length,Content-Range
Content-Type: application/json;charset=UTF-8
Referer
sec-ch-ua: "Chromium";v="92", " Not A;Brand";v="99", "Yandex";v="21"
sec-ch-ua-mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/92.0.4515.159 YaBrowser/21.8.3.614 Yowser/2.5
Safari/537.36
Add in nginx:
location / {
if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
#
# Custom headers and headers various browsers *should* be OK with but aren't
#
add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
#
# Tell client that this pre-flight info is valid for 20 days
#
add_header 'Access-Control-Max-Age' 1728000;
add_header 'Content-Type' 'text/plain; charset=utf-8';
add_header 'Content-Length' 0;
return 204;
}
if ($request_method = 'POST') {
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
}
if ($request_method = 'GET') {
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range' always;
add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
}
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_pass http://localhost:8080;
}
No result yet

Answer 1

Try adding the methods attribute to #CrossOrigin. When used to annotate a method, the supported methods are the same as the ones to which the method is mapped, but since you are using it at the class level you might need to specify them as follows:
#CrossOrigin(origins = "*", maxAge = 3600, methods = {RequestMethod.GET, RequestMethod.POST} ) // Just an example

Answer 2

Try replacing your #CrossOrigin annotation with
#CrossOrigin(value = "https://mysuite.ru", allowCredentials = "true")
Don't use "*" as an origin but "https://mysuite.ru".

Answer 3

The problem was that I was mistakenly doing a post request on the front side to localhost