在 uni-app 中，pages.json 文件用于配置页面的路由和窗口表现等。条件编译是通过 #ifdef 和 #endif 来实现的，允许你在不同平台上编译不同的代码。如果你在 pages.json 文件中使用条件编译时，编译到支付宝端报错，可能是以下原因导致的：
1. 条件编译语法错误
确保你的条件编译语法是正确的。例如：
{
"pages": [
{
"path": "pages/index/index",
"style": {
"navigationBarTitleText": "首页"
}
}
],
"condition": {
"current": 0,
"list": [
{
"name": "支付宝",
"path": "pages/alipay/index"
}
]
},
"globalStyle": {
"navigationBarTextStyle": "black",
"navigationBarTitleText": "uni-app",
"navigationBarBackgroundColor": "#F8F8F8",
"backgroundColor": "#F8F8F8"
},
"tabBar": {
"list": [
{
"pagePath": "pages/index/index",
"text": "首页"
}
]
},
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
],
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
]
}
2. 平台标识符错误
确保你使用的平台标识符是正确的。例如，支付宝小程序的平台标识符是 MP-ALIPAY，而不是 ALIPAY 或其他。
{
"pages": [
{
"path": "pages/index/index",
"style": {
"navigationBarTitleText": "首页"
}
}
],
"condition": {
"current": 0,
"list": [
{
"name": "支付宝",
"path": "pages/alipay/index"
}
]
},
"globalStyle": {
"navigationBarTextStyle": "black",
"navigationBarTitleText": "uni-app",
"navigationBarBackgroundColor": "#F8F8F8",
"backgroundColor": "#F8F8F8"
},
"tabBar": {
"list": [
{
"pagePath": "pages/index/index",
"text": "首页"
}
]
},
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
],
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
]
}
3. JSON 格式错误
确保 pages.json 文件的 JSON 格式是正确的，没有多余的逗号或缺少的括号。
4. 支付宝小程序不支持某些配置
支付宝小程序可能不支持 pages.json 中的某些配置项。你可以查阅支付宝小程序的官方文档，确认哪些配置项是支持的。
5. 控制台报错信息
查看控制台报错信息，通常会有具体的错误提示。根据错误提示来定位问题。
6. 使用 uni-app 官方文档
参考 uni-app 官方文档中关于条件编译和 pages.json 的说明，确保你使用的语法和配置是正确的。
示例代码
以下是一个简单的 pages.json 文件，包含条件编译的示例：
{
"pages": [
{
"path": "pages/index/index",
"style": {
"navigationBarTitleText": "首页"
}
}
],
"globalStyle": {
"navigationBarTextStyle": "black",
"navigationBarTitleText": "uni-app",
"navigationBarBackgroundColor": "#F8F8F8",
"backgroundColor": "#F8F8F8"
},
"tabBar": {
"list": [
{
"pagePath": "pages/index/index",
"text": "首页"
}
]
},
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
],
"usingComponents": {
"my-component": "/components/my-component"
},
"subPackages": [
{
"root": "pages/sub",
"pages": [
{
"path": "sub/index",
"style": {
"navigationBarTitleText": "子页面"
}
}
]
}
],
"preloadRule": {
"pages/index/index": {
"network": "all",
"packages": ["pages/sub"]
}
},
"plugins": {
"myPlugin": {
"version": "1.0.0",
"provider": "wxidxxxxxxxxxxxxxx"
}
},
"workers": "workers",
"requiredBackgroundModes": ["audio"],
"permission": {
"scope.userLocation": {
"desc": "你的位置信息将用于小程序位置接口的效果展示"
}
},
"sitemapLocation": "sitemap.json",
"style": "v2",
"useExtendedLib": {
"kbone": true
},
"window": {
"backgroundTextStyle": "light",
"navigationBarBackgroundColor": "#fff",
"navigationBarTitleText": "WeChat",
"navigationBarTextStyle": "black"
},
"networkTimeout": {
"request": 60000,
"connectSocket": 60000,
"uploadFile": 60000,
"downloadFile": 60000
},
"debug": true,
"functionalPages": true,
"resizable": true,
"navigateToMiniProgramAppIdList": [
"wxidxxxxxxxxxxxxxx"
]
}
