附件下载<p>[TOC]</p> <h5>简要描述</h5> <ul> <li>附件下载接口</li> </ul> <p><img src="https://www.showdoc.com.cn/server/api/attachment/visitFile?sign=c8b7e184398a60ed623ed5b74c48f6ee&file=file.png" alt="" /></p>