Question

[2024-11-06 14:23:24 317] [INFO] [Thread-64] [systemout] [2024-11-6 14:23:24 - ERROR - Shiro environment initialization failed java.lang.UnsupportedClassVersionError: io/buji/pac4j/env/Pac4jIniEnvironment has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0 (unable to load class file:/jczcpt/softs/TongWeb7.0.4.9_M3_Enterprise_Linux/deployment/iserver/WEB-INF/lib/buji-pac4j-8.1.0.jar#io.buji.pac4j.env.Pac4jIniEnvironment)，更换iserver新版本的war包，UGO_HOME的变量也重新修改了，启动tongweb，报这个错，有老师能帮忙给看看吗

Answer 1

【问题原因】报错提示系统无法读取外部的DTD文件，常见于设置访问限制导致该错误 【解决办法】调整XML解析器的属性，以允许访问外部的DTD文件，在%JAVA_HOME%jrelib 目录下，新建一个文件jaxp.properties，内容如下： javax.xml.accessExternalSchema=all javax.xml.accessExternalDTD=all