https://developers.weixin.qq.com/miniprogram/dev/wxcloud/guide/staticstorage/jump-miniprogram.html 下面的示例代码是错误的，无法拉起小程序 <wx-open-launch-weapp id="weapp" weappid="小程序 AppID" path="/pages/index/index"> <template> <button style="width: 200px; height: 45px; line-height: 45px; text-align: center; font-size: 17px; border-radius: 22.5px; color:cornflowerblue;">拉起小程序</button> </template> </wx-open-launch-weapp>  按照如下文档的描述，要加上username属性才可以拉起小程序 https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/Wechat_Open_Tag.html