重点是下面红色代码，custom是否是自定义样式，改成false用系统默认样式。
{
"pages": [
"pages/index/index",
"pages/logs/logs"
],
"window": {
"navigationBarTextStyle": "black",
"navigationBarTitleText": "Weixin",
"navigationBarBackgroundColor": "#ffffff"
},"tabBar": {
"custom": false,
"color": "#7A7E83",
"selectedColor": "#3cc51f",
"borderStyle": "black",
"backgroundColor": "#ffffff",
"list": [
{
"pagePath": "pages/index/index",
"text": "组件"
},
{
"pagePath": "pages/logs/logs",
"text": "接口"
}
]
}
,
"usingComponents": {},
"style": "v2",
"componentFramework": "glass-easel",
"sitemapLocation": "sitemap.json",
"lazyCodeLoading": "requiredComponents"
}