缓存文件

import { session } from 'electron'
import fs from 'fs'
import electronStore from 'electron-store'
const path = require('path')
const crypto = require('crypto')
const request = require('request')
const store = new electronStore()
// 设置缓存文件夹
const TEMP_PATH = 'temp'
// 设置文件夹位置（在安装应用文件夹内）
const basePath = path.join(app.getPath('userData'), TEMP_PATH)
// 创建缓存目录
fs.mkdir(basePath, { recursive: true }, err => {
  if (err) console.warn(`mkdir path: ${basePath} err`)
})

const filter = {
    urls: ['https://baidu.com/*', '*://baidu.com/*']
}
session.defaultSession.webRequest.onCompleted(filter, (details) => {
    // 请求地址
    const sourceUrl = details.url
    // 只缓存视频
    if(!sourceUrl.includes('.mp4')){
        return
    }
    const name = crypto.createHash('md5').update(sourceUrl).digest('hex')
    const filename = name + '.mp4'
    const req = request({method:'get', uri: sourceUrl})
    req.pipe(fs.createWriteStream(path.join(basePath, filename)))
    var total = 0
    req.on('response', (data) => {
        total = parseInt(data.headers['content-length'])
        console.log('response:', total)
    })
    req.on('data', (chunk) => {
        console.log('data:', chunk)
    })
    req.on('error', (error) => {
        console.warn('error:', error)
    })
    req.on('end', () => {
        // 获取存储成功后本地路径
        let localPath = path.join(basePath, filename)
        if (process.platform !== 'darwin') { // 这里判断是否为windows系统，windows系统需要//这种反斜杠才能展示
            const arr = localPath.split(path.sep)
            localPath = arr.reduce((pre, cue) => {return pre ? `${pre}//${cue}` : cue}, '')
        }
        console.log('end: ',localPath)
        store.set(name, localPath)
    })
})

获取地址

//background.js
// 获取url地址
ipcMain.on('getUrl', async function(event, data){
    const url =  store.get(crypto.createHash('md5').update(data).digest('hex')) || data
    event.sender.send('getUrlSuccess', url)
})

// renderer
ipcRenderer.on('getUrlSuccess', (event, data) => {
    console.log('视频缓存地址：', data)
})

使用 electron-store 来保存数据

npm install electron-store

const Store = require('electron-store');
 
const store = new Store();
 
//set设置值
store.set('unicorn', 'wangyang');
console.log(store.get('unicorn'));
//=> 'wangyang'
 
// 使用点表示法访问嵌套属性
store.set('foo.bar', true);
//get取值
console.log(store.get('foo'));
//=> {bar: true}
 
//delete删除值
store.delete('unicorn');
console.log(store.get('unicorn'));
//=> undefined