Errors in Tomcat startup window

Question

Hi!
I'm using Tomcat 4.1.24 and have been testing out a simple shopping cart application that uses 3 servlets called Selection, Weight and Checkout. (This is an appplication of mine that works fine under the JSWDK.) Before I added the files for the shopping cart application, my web.xml file (in ROOT\WEB-INF) referred to a single existing servlet called FirstServlet:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>FirstServlet</servlet-name>
<servlet-class>FirstServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>FirstServlet</servlet-name>
<url-pattern>/servlet/FirstServlet</url-pattern>
</servlet-mapping>
</web-app>
In this form, there are no error messages when starting up the Tomcat server.
I then modified the web.xml file to refer to the additional servlets so:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>FirstServlet</servlet-name>
<servlet-class>FirstServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>FirstServlet</servlet-name>
<url-pattern>/servlet/FirstServlet</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Selection</servlet-name>
<servlet-class>Selection</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Selection</servlet-name>
<url-pattern>/servlet/Selection</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Weight</servlet-name>
<servlet-class>Weight</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Weight</servlet-name>
<url-pattern>/servlet/Weight</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Checkout</servlet-name>
<servlet-class>Checkout</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Checkout</servlet-name>
<url-pattern>/servlet/Checkout</url-pattern>
</servlet-mapping>
</web-app>
Now, when I start up the Tomcat server, I get a series of error lines commencing with the following:
27-Jun-2003 10:13:03 org.apache.commons.digester.Digester error
SEVERE: Parse Error at line 49 column 11: The content of element type
"web-app" must match "(icon?,display-name?,description?,distributable?,
context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,
taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)".
at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown source)
Line 49 column 11 is the character position immediately following my terminating </web-app> tag.
Evidently, I need to include some further tags between those relating to consecutive servlets above in order to avoid these error messages. Does anybody know what is required here??
As it happens, Tomcat starts up successfully after producing these error messages and there is no problem with the running of the shopping cart application (which is the main thing, of course!), but I really would like to get rid of the error messages.
Any help would be most appreciated. Thanks in anticipation.
Jan

Answer 1

Please don't bother trying to answer my email. I've just realised what the simple solution is -- I must have all the <servlet> tags before all the <servlet-mapping> tags.
Cheers.
Jan