请确认自己生成的条形码是否符合一下规范 <a href="https://developers.weixin.qq.com/miniprogram/dev/api/device/scan/wx.scanCode.html" rel="noopener noreferrer" target="_blank">https://developers.weixin.qq.com/miniprogram/dev/api/device/scan/wx.scanCode.html</a>