在主进程中添加

const gotTheLock = app.requestSingleInstanceLock()
if (!gotTheLock) {
  app.quit()
} {
  app.on('second-instance', (event, argv) => {
    if (process.platform === 'win32') {
      if (win) {
        if (win.isMinimized()) {
          win.restore()
        }
        if (win.isVisible()) {
          win.focus()
        } else {
          win.show()
        }
     }}
  })
}