使用用户名和密码连接到另一个服务的Spring Security5.2/ WebClient方式是什么？

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.crypto.codec.Base64;
import org.springframework.web.reactive.function.client.WebClient;

public class WebClientExample {
    public static void main(String[] args) {
        // 创建WebClient实例
        WebClient webClient = WebClient.builder().build();

        // 获取当前用户的用户名和密码
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        String username = ((UserDetails) authentication.getPrincipal()).getUsername();
        String password = (String) authentication.getCredentials();

        // 对用户名和密码进行Base64编码
        String credentials = username + ":" + password;
        String encodedCredentials = new String(Base64.encode(credentials.getBytes()));

        // 配置身份验证
        WebClient.RequestHeadersSpec<?> request = webClient.get()
                .uri("https://example.com/api/resource")
                .header("Authorization", "Basic " + encodedCredentials);

        // 发送请求并处理响应
        request.retrieve()
                .bodyToMono(String.class)
                .subscribe(response -> System.out.println("Response: " + response));
    }
}