electronbuild打包时，背景图片失败，background-image:url被转换成app:///i

F12 console 报错：Failed to load resource: net::ERR_FAILED 这是因为 electron build 时，background-image: url(‘’) 被转换成 app:///img/ … 参考：

nklayman.github.io/vue-cli-plugin-electron-builder/guide/configuration.html#changing-the-file-loading-protocol

通过在vue.config.js中添加customFileProtocol，再次打包成功！

const { defineConfig } = require("@vue/cli-service"); module.exports = defineConfig({ transpileDependencies: ["vuetify"], pluginOptions: { electronBuilder: { customFileProtocol: "./", }, }, });