1.创建分包-文件夹
subPackages

app.json中写入subPackges对象，在里面写分包路径

{"pages": ["pages/index/index"],"subPackages": [{"root": "subPackages","name": "分包A","pages": ["pages/personal/tencent_isux/index"]}],"window": {"backgroundTextStyle": "light","navigationBarBackgroundColor": "#fff","navigationBarTitleText": "WeChat","navigationBarTextStyle": "black"}
}

如果在引入分包路径的时候报以下错误

解决办法：
1.在微信开发者工具中，右上角点击详情

2.在project.config.json文件夹中找到setting，并新增

"ignoreUploadUnusedFiles": false,
"ignoreDevUnusedFiles": false