运行java websaop服务时出错

我试图创建wsag4j协议服务，但出现了此错误。

您需要将apache日志库添加到类路径中

您可以下载该库，并获得有关如何将其添加到类路径的说明

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory
    at org.apache.catalina.util.LifecycleBase.<clinit>(LifecycleBase.java:36)
Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)