tomcat默认工程设置方法

http://tomcat.apache.org/tomcat-4.0-doc/config/context.html

The context path of this web application, which is matched against the beginning of each request URI to select the appropriate web application for processing. All of the context paths within a particular Host must be unique. If you specify a context path of an empty string (""), you are defining the default web application for this Host, which will process all requests not assigned to other Contexts.