Tomcat exception java. Lang. illegalargumentexception: document base *** does not exist or is not a readable

This exception is a common exception.

TomcatJava. Lang. illegalargumentexception: document base

Some ofTomcatThe problem that may occur to a friend who has already removed a web application fromTomcatWhy is this exception thrown when webapps is moved down?

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Java. Lang. illegalargumentexception: document base *** does not exist or is not a readable

Directory
At org. Apache. Naming. Resources. filedircontext. setdocbase (filedircontext. Java: 141)
At org. Apache. Catalina. Core. standardcontext. resourcesstart (standardcontext. Java: 3957)
At org. Apache. Catalina. Core. standardcontext. Start (standardcontext. Java: 4126)
At org. Apache. Catalina. Core. containerbase. addchildinternal (containerbase. Java: 791)
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In fact, this problem is very simple,TomcatAn application is not just that folder...

The detailed operation should be as follows:

Confirm 3:

1. The war file of this project is from *** \ apache-Tomcat-6.0.16 \ webapps Removal;

2. Some configurations of this project are from *** APACHE-Tomcat-6.0.16 \ work \ Catalina \ localhost removal;

3. configuration file of the project, directory: *** \ apache-Tomcat-6.0.16 \ conf \ Catalina \ localhost is removed.