使用Log4j2 ExtendedLoggerGenerator CLI时缺失Strings类的问题及解决

尝试通过Log4j2官方文档提供的CLI命令生成自定义日志类，执行命令如下：

java -cp log4j-core-2.19.0.jar org.apache.logging.log4j.core.tools.ExtendedLoggerGenerator \
    com.mycomp.ExtLogger DIAG=350 NOTICE=450 VERBOSE=550 > com/mycomp/ExtLogger.java

执行后持续报错，异常信息如下：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/logging/log4j/util/Strings
    at org.apache.logging.log4j.core.util.Integers.parseInt(Integers.java:43)
    at org.apache.logging.log4j.core.util.Integers.parseInt(Integers.java:54)
    at org.apache.logging.log4j.core.tools.Generate$LevelInfo.<init>(Generate.java:1044)
    at org.apache.logging.log4j.core.tools.Generate$LevelInfo.parse(Generate.java:1051)
    at org.apache.logging.log4j.core.tools.Generate.generate(Generate.java:1097)
    at org.apache.logging.log4j.core.tools.Generate.generate(Generate.java:1063)
    at org.apache.logging.log4j.core.tools.Generate.access$100(Generate.java:48)
    at org.apache.logging.log4j.core.tools.Generate$ExtendedLogger.main(Generate.java:1030)
    at org.apache.logging.log4j.core.tools.ExtendedLoggerGenerator.main(ExtendedLoggerGenerator.java:28)
Caused by: java.lang.ClassNotFoundException: org.apache.logging.log4j.util.Strings
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)

最初仅添加log4j-api-2.19.0.jar到类路径仍无法解决问题，后续发现需同时指定log4j-api-2.19.0.jar和log4j-core-2.19.0.jar两个包，修正后的命令如下：

java -cp log4j-api-2.19.0.jar;log4j-core-2.19.0.jar org.apache.logging.log4j.core.tools.ExtendedLoggerGenerator ExtLogger DIAG=350 NOTICE=450 VERBOSE=550 > ExtLogger.java

内容的提问来源于stack exchange，提问作者User1751