Use the following mirror sources (not guaranteed to be available, it is best to try them one by one) to configure individual user environment variables ! ! ! Not a system environment variable.
Community main mirror
PUB_HOSTED_URL=https://pub.flutter-io.cn
FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cnShanghai Jiaotong University Linux User Group
PUB_HOSTED_URL=https://dart-pub.mirrors.sjtug.sjtu.edu.cn
FLUTTER_STORAGE_BASE_URL=https://mirrors.sjtug.sjtu.edu.cnTsinghua University TUNA Association
PUB_HOSTED_URL=https://mirrors.tuna.tsinghua.edu.cn/dart-pub
FLUTTER_STORAGE_BASE_URL=https://mirrors.tuna.tsinghua.edu.cn/flutterMirroring service of TUNA Association
PUB_HOSTED_URL=http://mirrors.cnnic.cn/dart-pub
FLUTTER_STORAGE_BASE_URL=http://mirrors.cnnic.cn/flutterTencent Cloud Open Source Mirror Station
PUB_HOSTED_URL=https://mirrors.cloud.tencent.com/dart-pub
FLUTTER_STORAGE_BASE_URL=https://mirrors.cloud.tencent.com/flutterIf the configuration is successful, check the flutter\bin\cache directory, and folders like dart-sdk.old will continue to be generated . If you get stuck and check if there is a faster mirror source, you can comment and provide it.