如何将第三方可执行文件置于Electron应用安装目录根目录？

我之前也碰到过一模一样的问题——asar打包会把所有应用文件塞进归档里，外部进程根本没法访问里面的可执行文件。用electron-builder的extraResources配置就能完美解决，让你的第三方程序直接放到安装后的应用根目录，同时不被asar打包。

具体配置修改步骤 #

1. 调整asar配置，排除第三方可执行文件 #

把你原来的"asar": true改成带排除规则的对象，确保这个可执行文件不会被打包进asar：

"asar": {
  "exclude": ["path/to/your/third-party-executable.exe"]
}

这里的路径是相对于你的app目录的，比如如果你的可执行文件在app/tools/xxx.exe，就写"tools/xxx.exe"。

2. 添加extraResources配置，指定文件输出位置 #

在build对象里新增extraResources数组，告诉electron-builder把这个文件复制到应用根目录：

"extraResources": [
  {
    "from": "./app/path/to/your/third-party-executable.exe",
    "to": "./"
  }
]

• from：源文件路径，相对于项目根目录
• to：目标路径，./代表安装后的应用根目录

3. 修改后的完整build配置示例 #

结合你提供的配置，修改后大概是这样：

"build": {
  "appId": "com.toutici.asd",
  "asar": {
    "exclude": ["path/to/your/third-party-executable.exe"]
  },
  "extraResources": [
    {
      "from": "./app/path/to/your/third-party-executable.exe",
      "to": "./"
    }
  ],
  "directories": {
    "app": "./app",
    "buildResources": "./build",
    "output": "./dist"
  },
  "electronDownload": {
    "cache": ".electron",
    "verifyChecksum": true
  },
  "electronVersion": "1.7.11",
  "fileAssociations": {
    "ext": "asd",
    "icon": "./www/assets/icon/win/icon.ico"
  },
  "productName": "Android SMS Delimiter",
  "mac": {
    "category": "public.app-category.productivity",
    "target": [ "dmg", "mas" ],
    "icon": "./build/icon.icns"
  },
  "dmg": {
    "contents": [ { "x": 110, "y": 150 }, { "x": 240, "y": 150, "type": "link", "path": "/Applications" } ]
  },
  "deb": {
    "compression": "gz",
    "icon": "./build/background.png"
  },
  "linux": {
    "target": [ "AppImage", "apk", "deb", "rpm", "snap", "tar.gz", "zip" ]
  },
  "win": {
    "target": [ { "target": "nsis", "arch": [ "ia32" ] } ],
    "icon": "build/icon.ico"
  },
  "nsis": {
    "oneClick": true,
    "perMachine": true,
    "allowElevation": true,
    "allowToChangeInstallationDirectory": false,
    "createDesktopShortcut": true,
    "runAfterFinish": true,
    "installerIcon": "./build/icon.ico"
  },
  "portable": {
    "requestExecutionLevel": "user"
  },
  "squirrelWindows": {
    "iconUrl": "./build/icon.ico",
    "loadingGif": "./build/install-spinner.gif",
    "msi": true
  }
}

在代码中访问这个可执行文件 #

打包后，你需要用Electron的API获取应用安装目录，再拼接可执行文件的路径：

const path = require('path');
const { app } = require('electron');

// 获取应用程序所在目录（安装后的根目录）
const appInstallDir = path.dirname(app.getPath('exe'));
// 拼接第三方可执行文件的路径
const thirdPartyExePath = path.join(appInstallDir, 'third-party-executable.exe');

这样不管是Windows、macOS还是Linux，都能正确定位到这个可执行文件，外部进程也能正常访问它了。

内容的提问来源于stack exchange，提问作者davejoem