In the common\lib in the installation directory, the commons-beanutils.jar or commons-digester.jar in the lib package in struts is added.

The default port of tomcat is 8080, which may have been occupied by others.

If there are two versions of tomcat on this machine, you cannot match the two versions at the same time when configuring the environment variable CATALINA_HOME. If it is included, it may cause the startup dos interface to appear when tomcat starts, but there is no prompt and no initialization file at startup.

Tomcat settings bound in eclipse are incorrect, or the version selected in eclipse does not match the version installed on this machine.

Solutions to these errors:

Delete public beans. Jar or commons-digester.jar. If necessary, put it in another path, and then configure the environment variables! Error environment: tomcat4.3 1? Pillar 65438.

Solution: Modify the broken slogan in server.xml in the conf folder under the installation path.

Modify CATALINA_HOME and configure which tomcat to use.

Set tomcat correctly in eclipse. Before resetting, delete the previously set one, and then rebind a tomcat step by step.