如何在spring之外检查用户是否通过spring @EnableWebSecurity进行身份验证

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class CustomAuthenticationFilter implements Filter {

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;

        // 检查用户是否已通过身份验证
        if (httpRequest.getUserPrincipal() != null) {
            // 用户已通过身份验证
            chain.doFilter(request, response);
        } else {
            // 用户未通过身份验证，重定向到登录页面或返回错误信息
            httpResponse.sendRedirect("/login");
        }
    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // 初始化代码
    }

    @Override
    public void destroy() {
        // 销毁代码
    }
}

import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CustomAuthenticationInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 检查用户是否已通过身份验证
        if (request.getUserPrincipal() != null) {
            // 用户已通过身份验证，继续处理请求
            return true;
        } else {
            // 用户未通过身份验证，重定向到登录页面或返回错误信息
            response.sendRedirect("/login");
            return false;
        }
    }
}

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new CustomAuthenticationInterceptor());
    }
}