Tomcat无法启动,报错java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory

发现在启动tomcat 7的时候报了一个错误

java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory

    at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:55)

Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory

    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)

    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

    ... 1 more

Exception in thread "main"

到网上搜索了一下，比较好解决，有个网址http://mianniu.com/programming-world/java-lang-noclassdeffounderror-orgapachejulilogginglogfactory-at-org-apache-catalina-startup-bootstrap上说

Solutions

1. In Eclipse, Open the “Server” tab.
2. Double click on the “Tomcat6″ entry to see the configuration.
3. Then click on the “Open launch configuration” link in the “General information” block.
4. In the dialog, select the “Classpath” tab.
5. Click the “Add external jar” button.
6. Select the file “/usr/share/tomcat6/bin/tomcat-juli.jar”
7. Close the dialog.
8. Start tomcat 6 from Eclipse.

实际上，就是把bin/tomcat-juli.jar 下add tomcat classpath下