前台获取 sts 鉴权
<p><strong>简要描述：</strong> </p>
<ul>
<li>前台获取 sts 鉴权 （小程序端无 sdk, 需要后台返回签名）</li>
</ul>
<p><strong>请求URL：</strong> </p>
<ul>
<li><code>api/ali_oss/sts_auth</code></li>
</ul>
<p><strong>请求方式：</strong></p>
<ul>
<li>POST </li>
</ul>
<p><strong>参数：</strong> </p>
<p>无</p>
<p><strong>返回示例</strong></p>
<pre><code>{
"msg": {
"policy": "eyJleHBpcmF0aW9uIjoiMjAxOS0wNS0yM1QwMzo1MjoyMloiLCJjb25kaXRpb25zIjpbWyJjb250ZW50LWxlbmd0aC1yYW5nZSIsMCwxMDQ4NTc2MDAwXV19",
"signature": "d1etTXH9oXZE2ScLaNrv1gWu5Z4=",
"access_key_id": "STS.NHPXpQtPum1ssYfLCXNcR9s4Z",
"access_key_secret": "H9JeVVzSBEmHWuraxUMAmZB7t3huRmTMgAtjXTg6PKU3",
"security_token": "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",
"expiration": 1558583542
},
"data": [],
"code": 1,
"state": true
}</code></pre>
<p><strong>返回参数说明</strong> </p>
<table>
<thead>
<tr>
<th style="text-align: left;">参数名</th>
<th style="text-align: left;">类型</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align: left;">expiration</td>
<td style="text-align: left;">int</td>
<td>过期时间，一般为一个小时</td>
</tr>
</tbody>
</table>
<p><strong>备注</strong> </p>
<p>暂无</p>
<h4></h4>