首先下载cross-env 执行npm install -g cross-env
1,config文件夹里面新增一个sit.js写好对应的环境和域名
2. Add in config-index.js
if (process.env.NODE_ENV === 'sit') { return merge({}, config, require('./sit')) }
3. Add a command in package.json
"build:sit:weapp": "cross-env NODE_ENV=sit taro build --type weapp"
4. Execution
npm run build:sit:weapp can package the domain name environment in sit.