Tomcat class loading and configuration files

The Tomcat server is a servlet/jsp container, more essentially a servlet container, because the JSP is eventually compiled into a servlet to execute

1. Tomcat Web.xml

(1) <welcome-file-list> has the same meaning as the default file in IIS

(2) Error file

If a file resource is not found, the server will report 404 errors, and the above configuration will invoke/webapps/root/notfilefound.jsp.

If a JSP file that executes produces a nullpointexception, the/webapps/root/null.jsp is called

(3) Web.xml First is sure to include its schema.

<web-app xmlns= "HTTP://JAVA.SUN.COM/XML/NS/J2EE"

Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"

xsi:schemalocation= "Http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"

version= "2.4" >

</web-app>

(4)

<servlet></servlet> is used to declare data for a servlet, with the following child elements:

<servlet-name></servlet-name> Specify the name of the servlet

<servlet-class></servlet-class> specify the class name of the servlet

<jsp-file></jsp-file> Specify the full path of a JSP page in the Web site

<init-param></init-param> used to define parameters, similar to the previous <init-param>

(5) Similarly, with <servlet></servlet> is used <servlet-mapping></servlet-mapping> to define the corresponding URL of the servlet, Contains two child elements:

<servlet-name></servlet-name> Specify the name of the servlet

<url-pattern></url-pattern> Specify the URL for the servlet

2. Tomcat Directory

Bin:

Conf:server.xml Web.xml

Lib/japser/common: library file.

Src:tomcat Source Code

Webapps:web Publish the directory.

Work:jsp The class file that is generated after compilation.