Solutions

One or more listeners failed to start

启动时，webapps 里某个 App 加载失败，tomcat 日志 (logs/catalina.out) 里显示 "SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file"

The simple way to identify the problem:

In your WEB-INF/classes directory of the application, make a new file: logging.properties.

Add the following in that file:

org.apache.catalina.core.ContainerBase.[Catalina].level=INFO
org.apache.catalina.core.ContainerBase.[Catalina].handlers=java.util.logging.ConsoleHandler

Restart tomcat.

Now you'll have the complete stacktrace and debug the problem from there on.

Choose unique values for the 'webAppRootKey' context-param in your web.xml files!

原因：

webapps/App/WEB-INF/web.xml

<context-param>
    <param-name>webAppRootKey</param-name>
    <param-value>webapp.root.one</param-value>
</context-param>

参数“webAppRootKey”的值（上述示例里这个参数值为“webapp.root.one”）对于 tomcat 里部署的每个 App 必须唯一。