如何使用 sqlite3模块与电子?

我想使用 电子开发桌面应用程序,它使用通过 npm 安装的 sqlite3软件包和以下命令

npm install --save sqlite3

但是它在电子浏览器控制台中给出了以下错误

Uncaught Error: Cannot find module 'E:\allcode\eapp\node_modules\sqlite3\lib\binding\node-v45-win32-x64\node_sqlite3.node'

我的开发环境是 windows 8.1 x64 节点版本12.7

我的 包裹 Json文件是这样的:

{
"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"
}
}

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 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();

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>
116995 次浏览

Two aspects are to be considered here:

  1. Setting NODE_PATH: this lets electron know where to find your modules (see this answer for a thorough explanation)
  2. Compiling native modules against electron headers: see official docs

And checkout the following questions, that ask the same thing:


My tip would be to give lovefield (by Google) a try.

A simpler solution:

  1. Install electron-rebuild npm i electron-rebuild --save-dev
  2. Launch electron-rebuild ./node_modules/.bin/electron-rebuild (or .\node_modules\.bin\electron-rebuild.cmd on windows)
  3. Go to "node_modules/sqlite3/lib/binding/" and rename the folder "electron-v0.36-darwin-x64" to "node-v47-darwin-x64"

PS: v47 is my version, be careful to choose the good one (in your case v45)

Have a look at a similar answer here

TL;DR

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

I was having same problem. Tried everything and atlast this worked for me :-

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.

Just start application and you will be able to use sqlite3 now.

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.

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/

By far the easiest way to use SQLite with electron is with electron-builder.

First, add a postinstall step in your package.json:

"scripts": {
"postinstall": "install-app-deps"
...
}

and then install the necessary dependencies and build:

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 require it in code as normal.

See my github repo and blog post - it took me quite a while to figure this out too.

I encounter this error too. Here is how i solve it: npm install --save-dev electron-rebuild then: ./node_modules/.bin/electron-rebuild

from: 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.

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-electron or otherwise run the following line: npm install sqlite3 --runtime=electron --target=4.0.0 --dist-url=https://atom.io/download/electron

You can manually build the native modules using visual studio.

  1. Download visual studio 2019.
  2. Install package "desktop development with c++". In installation details tab select "MSVC v140 - VS 2015 C++ build tools (v14.00)"
  3. Download electron-builder in your project.
  4. In package.json create a script. "scripts": { "postinstall": "install-app-deps" }

  5. then run the script.

npm install --save sqlite3
npm install --save-dev electron-rebuild

Then, in the scripts of your package.json, add this line:

"scripts": {
"postinstall": "electron-rebuild",
...
},

Then just re-install to trigger the post-install:

npm install

Works flawlessly for me in a complex use case also involving electron-builder, electron-webpack and sequelize.

It works in electron-webpack's dev mode and in production mode for both Windows and Linux.