云函数中图片上传，调用了fs.createReadStream(filepath)，能读取云函数目录中的图片，换成wx.chooseimage中自动选择的路径就出错：readStream = fs.createReadStream(__dirname+'/IMG_2472.JPG'); 换成=〉 var readStream = fs.createReadStream(filepath);
发生异常: { [Error: ENOENT: no such file or directory, open http://tmp/OdK3pwDXqzMEed292db2562ea048ff0c62e5dac742dd.jpg']原代码如下：求高手指教！！
临时文件在你手机上，tmp相当于localhost域名，映射你本机的，云函数在腾讯云上，怎么能访问通呢，就算能访问通，这个api也不支持网络地址
type: image/jpeg
size: 1603548
files: (binary)}