Electron调用nodejs的cpp .node扩展【非安全】
环境：
electron: 30.1.1
nodejs: 20.14.0
前言
Electron中可以非常容易的调用nodejs的js代码，但是对于cpp .node扩展需要一定的配置才能调用，下面介绍一种最简单的cpp扩展的调用方法，该方法的优点是调用简单，缺点是会降低应用程序的安全性，生产环境中需谨慎使用。
代码
$ tree
.
+--- build
| +--- Release
| | +--- addon.node
+--- addon.cpp
+--- binding.gyp
+--- CMakeLists.txt
+--- index.html
+--- index.js
+--- package.json
index.html
<!DOCTYPE html>
<html><head><meta charset="UTF-8" /><title>Hello Electron</title><meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline';">
</head><body><p id="version"></p><p id="napi"></p><script>let info = `electron: ${process.versions.electron}, nodejs: ${process.versions.node}, chrome: ${process.versions.chrome}, v8: ${process.versions.v8}`;document.getElementById("version").innerHTML = info;console.log(info);const addon = require('./build/Release/addon.node');info = addon.hello();document.getElementById("napi").innerHTML = info;console.log(info);</script>
</body></html>
index.js
const { app, BrowserWindow } = require('electron/main');
// app.commandLine.appendSwitch('remote-debugging-port', '9222');const createWindow = () => {const win = new BrowserWindow({width: 800,height: 600,webPreferences: {nodeIntegration: true,contextIsolation: false}})win.loadFile('index.html');
}app.whenReady().then(() => {createWindow();
})
addon.cpp
#include <node_api.h>static napi_value helloMethod(napi_env env, napi_callback_info info)
{napi_value result;napi_create_string_utf8(env, "hello world from napi", NAPI_AUTO_LENGTH, &result);return result;
}static napi_value Init(napi_env env, napi_value exports)
{napi_property_descriptor desc = {"hello", 0, helloMethod, 0, 0, 0, napi_default, 0};napi_define_properties(env, exports, 1, &desc);return exports;
}NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)
binding.gyp
{"targets": [{"target_name": "addon","sources": [ "addon.cpp" ]}]
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8.12)project(addon)message(STATUS "operation system is ${CMAKE_SYSTEM}")add_definitions(-std=c++11)include_directories(${CMAKE_JS_INC})
include_directories(.)file(GLOB SOURCE_FILES addon.cpp)add_library(${PROJECT_NAME} SHARED ${SOURCE_FILES} ${CMAKE_JS_SRC})set_target_properties(${PROJECT_NAME} PROPERTIES PREFIX "" SUFFIX ".node")target_link_libraries(${PROJECT_NAME} ${CMAKE_JS_LIB})
package.json
{"name": "my-electron-app","version": "1.0.0","description": "","main": "index.js","scripts": {"start": "electron ."}
}
编译
node-gyp configure build
结果
electron: 30.1.1, nodejs: 20.14.0, chrome: 124.0.6367.243, v8: 12.4.254.20-electron.0hello world from napi
禁用 contextIsolation 和启用 nodeIntegration，会降低应用的安全性。务必谨慎使用，并确保你信任加载的所有代码和资源。