electron调用dll文件

Electron 对系统层能力的使用可能比较弱，此时需要求助 Python、C++、C# 等语言，通过 ffi-napi 库可以让 Node.js 使用 C++ dll，通过 electron-edge-js 库可以让 Node.js 使用 C# dll

1. 先确定dll文件是用什么语言写的.

使用peid 应用查看- 这个是exe文件运行在windows电脑上.

2.软件查看结果,可以看到用的是c++ 开发的

查看nodejs是多少位

windows下: 打开cmd 输入命令 node 在输入process

3. 使用关键的库 ffi-napi 加上 ref-napi 调用dll

安装: https://github.com/node-ffi-napi/node-ffi-napi

npm install ffi-napi
npm install ref-napi
npm install ref-array-napi
npm install ref-array

如果出现安装报错

                errorOut=warning ..\..\..\..\..\package.json: No license field
gyp info it worked if it ends with ok
gyp info using node-gyp@9.1.0
gyp info using node@16.18.0 | win32 | x64
gyp info find Python using Python version 3.9.12 found at "C:\ProgramData\Miniconda3\python.exe"
gyp info find VS using VS2022 (17.3.32929.385) found at:
gyp info find VS "C:\Program Files\Microsoft Visual Studio\2022\Community"
gyp info find VS run with --verbose for detailed information
gyp info spawn C:\ProgramData\Miniconda3\python.exe
gyp info spawn args [
gyp info spawn args   'C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\gyp\\gyp_main.py',
gyp info spawn args   'binding.gyp',
gyp info spawn args   '-f',
gyp info spawn args   'msvs',
gyp info spawn args   '-I',
gyp info spawn args   'C:\\Users\\liuda\\Documents\\GitHub\\pos-electron\\node_modules\\ref-napi\\build\\config.gypi',
gyp info spawn args   '-I',
gyp info spawn args   'C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\addon.gypi',
gyp info spawn args   '-I',
gyp info spawn args   'C:\\Users\\liuda\\.electron-gyp\\14.0.0\\include\\node\\common.gypi',
gyp info spawn args   '-Dlibrary=shared_library',
gyp info spawn args   '-Dvisibility=default',
gyp info spawn args   '-Dnode_root_dir=C:\\Users\\liuda\\.electron-gyp\\14.0.0',
gyp info spawn args   '-Dnode_gyp_dir=C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp',
gyp info spawn args   '-Dnode_lib_file=C:\\\\Users\\\\liuda\\\\.electron-gyp\\\\14.0.0\\\\<(target_arch)\\\\node.lib',
gyp info spawn args   '-Dmodule_root_dir=C:\\Users\\liuda\\Documents\\GitHub\\pos-electron\\node_modules\\ref-napi',
gyp info spawn args   '-Dnode_engine=v8',
gyp info spawn args   '--depth=.',
gyp info spawn args   '--no-parallel',
gyp info spawn args   '--generator-output',
gyp info spawn args   'C:\\Users\\liuda\\Documents\\GitHub\\pos-electron\\node_modules\\ref-napi\\build',
gyp info spawn args   '-Goutput_dir=.'
gyp info spawn args ]
gyp: name 'openssl_fips' is not defined while evaluating condition 'openssl_fips != ""' in binding.gyp while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:284:16)
gyp ERR! stack     at ChildProcess.emit (node:events:513:28)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (node:internal/child_process:293:12)
gyp ERR! System Windows_NT 10.0.19042
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\liuda\Documents\GitHub\pos-electron\node_modules\ref-napi
gyp ERR! node -v v16.18.0
gyp ERR! node-gyp -v v9.1.0
gyp ERR! not ok
error Command failed with exit code 1.

                command='C:\Program Files\nodejs\node.exe' 'C:\Users\liuda\AppData\Roaming\npm\node_modules\yarn\bin\yarn.js' run install
                workingDir=C:\Users\liuda\Documents\GitHub\pos-electron\node_modules\ref-napi

mac解决方案:

使用命令 xcode-select --install 解决问题

windwos解决方案

使用命令

// 以管理员身份运行终端执行命令
npm install --global --production windows-build-tools

安装好后继续使用上面的命令安装两个第三方库

windows环境(我用的虚拟机virtual box):

安装vs studio 桌面版C++

安装node 里面有个C++选项需要给选上

yarn build 打包报错:
全局安装cnpm
npm config set registry http://registry.npm.taobao.org/
npm i cnpm

安装windows平台编译环境

安装windows-build-tools

https://blog.csdn.net/weixin_46261309/article/details/105456830

virtualBox 复制粘贴功能

https://blog.csdn.net/weixin_41278720/article/details/79101590

其他

C# 安装 读取dll文件
项目地址 https://github.com/agracio/electron-edge-js
electron-edge-js

npm install electron-edge-js