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This is really a poor solution to be avoided if possible. One deficiency is that if you update your copy of Mathemat 

ica, you will have to remember to copy the new fonts. The proper solution is to launch Xvfb so it either uses a font

server  or  a  font  path  setting,  as  described  above.  Remember  that  this  is  not  a  problem  when  working  under  Win 

dows. 

2.5 Upgrading from webMathematica 1.0

This section discusses some of the issues that will concern you if you already have webMathematica 1.0. If you are

using an older  servlet  container this  may be a  good  opportunity  to upgrade  to something  more recent.  You should

note that to use all the features of webMathematica 2.0 a servlet container that supports the JSP API 1.2 is required.

If you are going to upgrade your servlet container you could follow the instructions at the beginning of this chapter

as though this was a fresh installation of webMathematica 2.0.

A summary of the new features can be found in the section 

webMathematica 2.0 New Features

.

2.5.1 Install Mathematica 4.2

webMathematica 2.0 comes with a copy of Mathematica 4.2 and this should be installed as discussed in the section

on 

Installing and Configuring Mathematica

.

If you have  installed any applications  into your copy of Mathematica  4.1 you will need to make them available to

Mathematica  4.2,  this  is  discussed  in  the  section  Installing  Packages.  Note  that  you  should  not  copy  the  MSP

application from Mathematica 4.1 to Mathematica 4.2.

2.5.2 Install the webMathematica Web Application

To install the webMathematica web application you will need to remove your current webMathematica web applica 

tion out of your servlet container. For Tomcat, this is a simple matter of moving the webMathematica directory

from the webapps directory.  You may need  some of  the material  in this web  application  so you should  probably

keep  it  somewhere  accessible.  After  this  you  can  follow  the  instructions  for  Installing  the  webMathematica  Web

Application.

2.5.3 Configure the New Layout

If  you  made  any  special  configuration  to  your  old  version  of  webMathematica  you  may  want  to  make  similar

changes in webMathematica 2.0. Two relevant files are web.xml and MSP.conf. In addition, the security system

is configured in a different way.

web.xml

Warning: you should not copy the web.xml file from webMathematica 1.0 into webMathematica 2.0. Some of the

settings are incompatible between the two versions and will prevent webMathematica 2.0 from running correctly.

In  both  webMathematica  1.0  and  2.0  the  web.xml  file  is  found  in  the  directory  webMathematica/WEB INF.

You should only make changes in this file if you are certain that you understand the intent of the setting.

 .