如果我不想切换到其他库，如何从doGet请求中获取“身份验证”头？

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyServlet extends HttpServlet {
    protected void doGet(HttpServletRequest request, HttpServletResponse response) {
        String authenticationHeader = request.getHeader("身份验证");
        // 在这里处理身份验证头的逻辑
    }
}