简要描述：
- 下载消息中的文件
请求URL：
- http://域名地址/getMsgFile
请求方式：
- POST
请求头Headers：
- Content-Type：application/json
- Authorization：login接口返回
参数：
| 参数名 | 必选 | 类型 | 说明 |
|---|---|---|---|
| wId | 是 | string | 登录实例标识 包含此参数 所有参数都是从消息回调中取） |
| msgId | 是 | long | 消息id |
| content | 是 | string | 收到的消息的xml数据 |
返回数据：
| 参数名 | 类型 | 说明 |
|---|---|---|
| code | string | 1000成功，1001失败 |
| msg | string | 反馈信息 |
请求参数示例
<span style="color:#333333"><span style="background-color:#ffffff"><span style="background-color:#f7f8f9"><span style="color:black"><code><span style="color:#999999">{</span>
<span style="color:#990055">"wId"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"0000016f-a3f4-7ac2-0001-4686486bb6c6"</span><span style="color:#999999">,</span>
<span style="color:#990055">"msgId"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#990055">1102684150</span><span style="color:#999999">,</span>
<span style="color:#990055">"content"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"<?xml version=\"1.0\"?><msg><appmsg appid=\"wx6618f1cfc6c132f8\" sdkver=\"0\"><title>下载文件.txt</title><des /><action>view</action><type>6</type><showtype>0</showtype><content /><url /><dataurl /><lowurl /><lowdataurl /><recorditem><![CDATA[]]></recorditem><thumburl /><messageaction /><extinfo /><sourceusername /><sourcedisplayname /><commenturl /><appattach><totallen>6</totallen><attachid>@cdn_304e02010004473045020100020466883f5202032f55f90204260260b402045e1db470042036626464393436656537643431613836623065383665373034396538646566630204010400050201000400_17dd9d048f84c77db909b2161d6dbb09_1</attachid><emoticonmd5></emoticonmd5><fileext>txt</fileext><cdnattachurl>304e02010004473045020100020466883f5202032f55f90204260260b402045e1db470042036626464393436656537643431613836623065383665373034396538646566630204010400050201000400</cdnattachurl><aeskey>17dd9d048f84c77db909b2161d6dbb09</aeskey><encryver>1</encryver></appattach><weappinfo><pagepath /><username /><appid /><appservicetype>0</appservicetype></weappinfo><websearch /><md5>8c8fa3529ee34d4e69a0baafb7069da3</md5></appmsg><fromusername>wxid_lr6j4nononb921</fromusername><scene>0</scene><appinfo><version>7</version><appname>微信电脑版</appname></appinfo><commenturl /></msg>"</span>
<span style="color:#999999">}</span></code></span></span></span></span>成功返回示例
<span style="color:#333333"><span style="background-color:#ffffff"><span style="background-color:#f7f8f9"><span style="color:black"><code><span style="color:#999999">{</span>
<span style="color:#990055">"message"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"成功"</span><span style="color:#999999">,</span>
<span style="color:#990055">"code"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"1000"</span><span style="color:#999999">,</span>
<span style="color:#990055">"data"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#999999">{</span>
<span style="color:#990055">"url"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"下载文件.txt"</span>
<span style="color:#999999">}</span>
<span style="color:#999999">}</span></code></span></span></span></span>错误返回示例
<span style="color:#333333"><span style="background-color:#ffffff"><span style="background-color:#f7f8f9"><span style="color:black"><code><span style="color:#999999">{</span>
<span style="color:#990055">"message"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"失败"</span><span style="color:#999999">,</span>
<span style="color:#990055">"code"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#669900">"1001"</span><span style="color:#999999">,</span>
<span style="color:#990055">"data"</span><span style="background-color:rgba(255, 255, 255, 0.5)"><span style="color:#9a6e3a">:</span></span> <span style="color:#0077aa">null</span>
<span style="color:#999999">}</span></code></span></span></span></span>测试地址：https://wkteam.cn/
