node.js 如何在电子中使用 sqlite3 模块？
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How to use sqlite3 module with electron?
提问by manas
I want to develop desktop app using electronthat uses sqlite3 package installed via npm with the command
我想使用电子开发桌面应用程序，该应用程序使用通过 npm 安装的 sqlite3 包和命令
npm install --save sqlite3
but it gives the following error in electron browser console
但它在电子浏览器控制台中出现以下错误
Uncaught Error: Cannot find module 'E:\allcode\eapp\node_modules\sqlite3\lib\binding\node-v45-win32-x64\node_sqlite3.node'
My development environment is windows 8.1 x64 node version 12.7
我的开发环境是windows 8.1 x64 node version 12.7
my package.jsonfile looks like this:
我的package.json文件如下所示：
{
"name": "eapp",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "electron ."
},
"author": "",
"license": "ISC",
"devDependencies": {
"electron-prebuilt": "^0.32.1"
},
"dependencies": {
"angular": "^1.3.5",
"sqlite3": "^3.1.0"
}
}
index.js file
index.js 文件
var app = require('app');
var BrowserWindow = require('browser-window');
require('crash-reporter').start();
var mainWindow = null;
app.on('window-all-closed', function() {
if (process.platform != 'darwin') {
app.quit();
}
});
app.on('ready', function() {
// Create the browser window.
mainWindow = new BrowserWindow({width: 800, height: 600});
mainWindow.loadUrl('file://' + __dirname + '/index.html');
mainWindow.openDevTools();
mainWindow.on('closed', function() {
mainWindow = null;
});
});
my.js file
my.js 文件
var sqlite3 = require('sqlite3').verbose();
var db = new sqlite3.Database('mydb.db');
db.serialize(function() {
db.run("CREATE TABLE if not exists lorem (info TEXT)");
var stmt = db.prepare("INSERT INTO lorem VALUES (?)");
for (var i = 0; i < 10; i++) {
stmt.run("Ipsum " + i);
}
stmt.finalize();
db.each("SELECT rowid AS id, info FROM lorem", function(err, row) {
console.log(row.id + ": " + row.info);
});
});
db.close();
index.html file
index.html 文件
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div >
<div>
<h2>Hello</h2>
</div>
</div>
<!--<script src="js/jquery-1.11.3.min.js"></script>-->
<script src="js/my.js"></script>
</body>
</html>
回答by Steve Melia
By far the easiest way to use SQLite with electron is with electron-builder.
到目前为止，将 SQLite 与电子一起使用的最简单方法是使用electron-builder.
First, add a postinstall step in your package.json:
首先，在 package.json 中添加安装后步骤：
"scripts": {
"postinstall": "install-app-deps"
...
}
and then install the necessary dependencies and build:
然后安装必要的依赖项并构建：
npm install --save-dev electron-builder
npm install --save sqlite3
npm run postinstall
electron-builder will build the native module for your platform, with the correct name for the Electron binding; and you can then requireit in code as normal.
电子构建器将为您的平台构建本机模块，并为电子绑定提供正确的名称；然后你可以require像往常一样在代码中使用它。
See my github repoand blog post- it took me quite a while to figure this out too.
请参阅我的github 存储库和博客文章- 我也花了很长时间才弄清楚这一点。
回答by Joue Bien
I would not recommend the native node sqlite3 module. It requires being rebuild to work with electron. This is a massive pain to do - At least I can never get it to work and their a no instructions to for rebuilding modules on windows.
我不会推荐本机节点 sqlite3 模块。它需要重建才能与电子一起使用。这是一个巨大的痛苦 - 至少我永远无法让它工作，而且他们没有关于在 Windows 上重建模块的说明。
Instead have a look at kripken's 'sql.js' module which is sqlite3 that has been compiled 100% in JavaScript. https://github.com/kripken/sql.js/
而是查看 kripken 的“sql.js”模块，它是在 JavaScript 中 100% 编译的 sqlite3。 https://github.com/kripken/sql.js/
回答by Yan Foto
Two aspects are to be considered here:
这里要考虑两个方面：
- Setting
NODE_PATH: this lets electron know where to find your modules (see this answerfor a thorough explanation) - Compiling native modules against electron headers: see official docs
And checkout the following questions, that ask the same thing:
并检查以下问题，这些问题提出了同样的问题：
My tipwould be to give lovefield(by Google) a try.
我的建议是尝试lovefield(by Google)。
回答by Rj-s
I was having same problem. Tried everything and atlast this worked for me :-
我遇到了同样的问题。尝试了一切，最后这对我有用：-
npm install --save sqlite3
npm install --save electron-rebuild
npm install --save electron-prebuilt
.\node_modules\.bin\electron-rebuild.cmd
This will create "electron-v1.3-win32-x64" folder in .\node_modules\sqlite3\lib\binding\ location which is used by electron to use sqlite3.
这将在 .\node_modules\sqlite3\lib\binding\ 位置创建“electron-v1.3-win32-x64”文件夹，电子使用它来使用 sqlite3。
Just start application and you will be able to use sqlite3 now.
只需启动应用程序，您现在就可以使用 sqlite3。
回答by Fabien Sa
A simpler solution:
一个更简单的解决方案：
- Install electron-rebuild
npm i electron-rebuild --save-dev - Launch electron-rebuild
./node_modules/.bin/electron-rebuild(or.\node_modules\.bin\electron-rebuild.cmdon windows) - Go to "node_modules/sqlite3/lib/binding/" and rename the folder "electron-v0.36-darwin-x64" to "node-v47-darwin-x64"
- 安装电子重建
npm i electron-rebuild --save-dev - 启动电子重建
./node_modules/.bin/electron-rebuild（或.\node_modules\.bin\electron-rebuild.cmd在 Windows 上） - 转到“ node_modules/sqlite3/lib/binding/”并将文件夹“ electron-v0.36-darwin-x64”重命名为“ node- v47-darwin-x64”
PS: v47is my version, be careful to choose the good one (in your case v45)
PS：v47是我的版本，小心选择好的（你的情况是v45）
回答by valleygtc
I encounter this error too. Here is how i solve it:
npm install --save-dev electron-rebuild
then:
./node_modules/.bin/electron-rebuild
我也遇到这个错误。这是我解决它的方法：
npm install --save-dev electron-rebuild
然后：
./node_modules/.bin/electron-rebuild
from: https://electronjs.org/docs/tutorial/using-native-node-modules
来自：https: //electronjs.org/docs/tutorial/using-native-node-modules
ps: While it's on rebuilding, don't use npm startto lanch the electron app. Otherwise the rebuild process would fail.
ps：在重建时，不要npm start用来启动电子应用程序。否则重建过程将失败。
回答by Sailab Rahi
It works for me in version 3 and 4, unfortunately NOT version 5. See the sqlite3 documentation for details: https://www.npmjs.com/package/sqlite3#custom-builds-and-electronor otherwise run the following line: npm install sqlite3 --runtime=electron --target=4.0.0 --dist-url=https://atom.io/download/electron
它适用于版本 3 和 4，不幸的是版本 5。有关详细信息，请参阅 sqlite3 文档：https: //www.npmjs.com/package/sqlite3#custom-builds-and-electron或以其他方式运行以下行：npm install sqlite3 --runtime=electron --target=4.0.0 --dist-url=https://atom.io/download/electron
回答by smkndblvr
Have a look at a similar answer here
看看这里的类似答案
TL;DR
TL; 博士
cd .\node_modules\sqlite3
npm install nan --save
npm run prepublish
node-gyp configure --module_name=node_sqlite3 --module_path=../lib/binding/electron-v1.3-win32-x64
node-gyp rebuild --target=1.3.2 --arch=x64 --target_platform=win32 --dist-url=http://electron.atom.io/ --module_name=node_sqlite3 --module_path=../lib/binding/electron-v1.3-win32-x64
回答by nicolas-van
npm install --save sqlite3
npm install --save-dev electron-rebuild
Then, in the scripts of your package.json, add this line:
然后，在 package.json 的脚本中，添加以下行：
"scripts": {
"postinstall": "electron-rebuild",
...
},
Then just re-install to trigger the post-install:
然后只需重新安装即可触发安装后：
npm install
Works flawlessly for me in a complex use case also involving electron-builder, electron-webpack and sequelize.
在一个复杂的用例中对我来说完美无缺，还涉及电子构建器、电子网络包和续集。
It works in electron-webpack's dev mode and in production mode for both Windows and Linux.
它适用于 electron-webpack 的开发模式和 Windows 和 Linux 的生产模式。
回答by Joel
You can manually build the native modules using visual studio.
您可以使用 Visual Studio 手动构建本机模块。
- Download visual studio 2019.
- Install package "desktop development with c++". In installation details tab select "MSVC v140 - VS 2015 C++ build tools (v14.00)"
- Download electron-builder in your project.
In package.json create a script. "scripts": { "postinstall": "install-app-deps" }
then run the script.
- 下载 Visual Studio 2019。
- 安装包“使用 c++ 进行桌面开发”。在安装详细信息选项卡中选择“MSVC v140 - VS 2015 C++ 构建工具（v14.00）”
- 在您的项目中下载电子生成器。
在 package.json 中创建一个脚本。“脚本”：{“安装后”：“安装应用程序”}
然后运行脚本。
