指令如下：
npm config set proxy=http://127.0.0.1:1080
npm config set https-proxy=http://127.0.0.1:1080
npm config set registry=http://registry.npmjs.org
npm config set proxy=http://127.0.0.1:2080
npm config set https-proxy=http://127.0.0.1:2080
指令如下：
npm config set proxy=http://127.0.0.1:1080
npm config set https-proxy=http://127.0.0.1:1080
npm config set registry=http://registry.npmjs.org
npm config set proxy=http://127.0.0.1:2080
npm config set https-proxy=http://127.0.0.1:2080