flutter doctor 信号号超时

报错如下：

:\Users\Administrator>flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.27.4, on Microsoft Windows [版本 10.0.22631.5189], locale zh-CN)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.1)
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2019 16.11.13)
[√] Android Studio (version 2024.2)
[√] Connected device (3 available)
[!] Network resourcesX A network error occurred while checking "https://maven.google.com/": 信号灯超时时间已到

尝试直接设置：

SET FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn  

SET PUB_HOSTED_URL=https://pub.flutter-io.cn

以上只是在本cmd环境生效，需要设置到环境变量中：

收工！