Tomcat 未启动> java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina

Question

I am unable to start the tomcat 5.5 server due to following error message in the stderr.log. Can someone please help me, it is kind of emergency. Thanks in advance.

java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina   
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:306)   
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)    
at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:222)   
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:410)    

Answer 1

I was facing the same issue. Then I noticed that I have accidentally deleted lib folder from tomcat directory. The issue got resolved as lib folder back in place.

Answer 2

In my case I changed catatina.properties file found in tomcat_directory/conf from

common.loader='${catalina.base}/lib','${catalina.base}/lib/*.jar','${catalina.home}/lib','${catalina.home}/lib/*.jar'

To

common.loader=${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar

However the file always used to get overwritten. I was using eclipse. So, I did the same change in the Servers Project in eclipse. In my case it was Servers/Tomact v9.0 Server/catalina.properties. I did the same change stated above in this file too. It worked for me.

Answer 3

根据我的经验，我观察到当我们多次运行服务器时，tomcat有时会抛出这个问题，这导致服务器无法拾取罐子我的建议是重新启动eclipse，这解决了我的问题

Answer 4

I faced the same issue and stacktrace using 8.5.11 tomcat. updating to tomcat 8.5.24 solved the issue.

Answer 5

From my experience, I have observed that tomcat sometimes throws this when there are project dependent jars (could be transitively dependent as well) missing, or not being pointed to properly, or corrupted. So, please check the health of the jars deployed in the server and their dependencies. For example, if you are using maven to build your project jars, you could once clear the .m2/repository and rebuild the project and deploy again.

Answer 6

通过将 ejb.jar 文件添加到作为启动依赖包的 Tomcat/lib 文件夹中解决了该问题。

Answer 7

Sometimes, even though all the necessary things are perfect, this error would be reported if there is user VM arguments enclosed with the double quotes, I spent a day to get rid of this. check in run --> run configuration, in arguments tab, VM Arguments, check for the user entries is enclosed with quotes/spaces, if so remove it and 'Run'

Answer 8

Tomcat by default needs a set of libraries inside the lib folder to bootstrap the starting process inside the tomcat. Make sure you have these libs inside the lib folder. This is for tomcat8.