控制台打印异常如下:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/juli/logging/LogFactory at org.apache.catalina.startup.Bootstrap.<clinit>(Bootstrap.java:54) Caused by: java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:323) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:268) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336) ... 1 more Could not find the main class: org.apache.catalina.startup.Bootstrap. Program will exit.
主要是缺少tomcat-juli.jar.
解决办法:
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 "D:/developTools/server/eclipse/apache-tomcat-6.0.36/bin/tomcat-juli.jar"
7. Close the dialog.
8. Start tomcat 6 from Eclipse.
Eclipse中配置Tomcat碰到Server Tomcat v6.0 Server at localhost failed to start问题
原文：http://www.cnblogs.com/a198720/p/4214247.html