appCdn = "https://cdn.kgcaptcha.com";// 前端验证成功后颁发的 token,有效期为两分钟$request->token = $_POST["kgCaptchaToken"];// 当安全策略中的防控等级为3时必须填写$request->userId = "kgCaptchaDem... import jakarta.servlet.http.HttpServletRequest;import jakarta.servlet.http.HttpServletResponse;import java.io.IOException;import java.util.Map;public class demo extends HttpServlet { private...