MyEclipse无法运行tomcat，出现could not find main class提示

java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory
at org.apache.catalina.startup.Bootstrap.(Bootstrap.java:60)
Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
... 1 more
Exception in thread "main"

你这个是找不到日志类而报的错Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactorym，原因是在classloader加载类的时候发现类不存在在类路径的时候报出的

个人建议卸载myeclipse 6.5，在安装一下，不行的话，改用eclipse，早就可以支持javaee开发了。