enum ErrorCode { AuthenticationFailed = 401, NoPermission = 403, ResourceNotExist = 404, } function getErrorMessage(code: ErrorCode): string { switch (code) { case ErrorCode.AuthenticationFailed: return '认证失败,无法访问系统资源'; case ErrorCode.NoPermission: return '当前操作没有权限'; case ErrorCode.ResourceNotExist: return '访问资源不存在'; default: return '系统未知错误,请反馈给管理员'; } } export {ErrorCode, getErrorMessage}