https://developers.weixin.qq.com/miniprogram/dev/server/API/sec-center/sec-check/api_mediacheckasync.html

图片能够正常访问（mediaUrl=https://www.perco.com.cn/aiot/uploads/20260512/fef3deefeb724a108b89b3a2173ffd44.jpg）

请求参数{"media_type":2,"openid":"oRz5f11kcF0yTUq6SY2kKkl-L05I","version":2,"media_url":"https://www.perco.com.cn/aiot/uploads/20260512/fef3deefeb724a108b89b3a2173ffd44.jpg","scene":1}

返回数据:{"errcode":0,"errmsg":"ok","trace_id":"6a0310ed-3972e63b-74f7e6d1"}

微信内容安全回调原始报文:

<xml><ToUserName><![CDATA[gh_082753da894e]]></ToUserName>

<FromUserName><![CDATA[oRz5f15j1xOAZgpG5vj8c8XbHM5Q]]></FromUserName>

<CreateTime>1778585840</CreateTime>

<MsgType><![CDATA[event]]></MsgType>

<Event><![CDATA[wxa_media_check]]></Event>

<appid><![CDATA[wxbfd8ce0c3c3a5af6]]></appid>

<trace_id><![CDATA[6a0310ed-3972e63b-74f7e6d1]]></trace_id>

<version>2</version>

<errcode>-1008</errcode>

<errmsg><![CDATA[下载错误，请检查媒体链接是否有效]]></errmsg>

</xml>