可用 get命令查看registry

npm congfig get registry原版结果为

http://registry.npmjs.org

原版结果为

http://registry.npmjs.org

用set命令换成阿里的镜像就可以了

npm config set registry https://registry.npmmirror.com

国外镜像源可能出现超时或者下载速度慢也会提示重连，如：

info There appears to be trouble with your network connection. Retrying...