References https://www.ddpoc.com/DVB-2021-1748.html https://edu.51cto.com/article/note/38256.html https://github.com/admin772/POC/blob/main/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8B%E6%97%B6%E7%A9%BAKSOA%E7%B3%BB%E7%BB%9F%E6%8E%A5%E5%8F%A3PrintZPYG.jsp%E5%AD%98%E5%9C%A8SQL%E6%B3%A8%E5%85%A5%E6%BC%8F%E6%B4%9E.md https://blog.csdn.net/qq_39573664/article/details/135770215 https://www.cnblogs.com/pursue-security/p/17684989.html https://github.com/eeeeeeeeee-code/POC/blob/main/wpoc/%E7%94%A8%E5%8F%8BOA/%E7%94%A8%E5%8F%8BGRP-U8-bx_dj_check.jsp%E5%AD%98%E5%9C%A8SQL%E6%B3%A8%E5%85%A5.md
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