众所众知小程序上传的过程中对包的大小有限制，正常情况下不允许当个包超过2M，所以需要分包
需要再pages.json这个文件夹中进行配置

"pages": [{"path": "pages/index/index","style": {"navigationBarTitleText": "首页","enablePullDownRefresh": false,"navigationBarBackgroundColor":"#ffffff"}},{"path": "pages/my/my","style": {"navigationBarTitleText": "个人中心","navigationStyle": "custom","enablePullDownRefresh": false}}，....//主包的配置 我是吧tabbar放在主要里面 其他进行分包处理],"subPackages":[{"root":"subPackages",//分包再src下的文件名与pages同级 写法与pages相同"pages": [{"path": "xx/xx","style": {"navigationBarTitleText": "分包的XXX","navigationBarBackgroundColor":"#ffffff","enablePullDownRefresh": false}}]