如题，我想获取某个view的宽度，该怎么做

如题

请求地址 https://api.weixin.qq.com/wxa/commit?access_token=access_token 数据 {"template_id":0,"ext_json":"{extAppid:"小程序appid",ext:{"user_id":"11","appid":"小程序appid",},}","user_version":"V1.0","user_desc":"暗里着迷测试",} 返回 {"errcode":47001,"errmsg":"data format error hint [X9Bmja0285e626]"}