67

The source  for this  example  is  in webMathematica/Examples/XML/Phone.jsp.  It  also uses an  XML file

webMathematica/Examples/XML/phone.xml.  If you installed webMathematica  as described 

above

,  you

should  be  able  to  connect  to  this  JSP  via  http://localhost:8080/webMathematica/Examples/XML/Phone.jsp.  (You

may have some other URL for accessing your server.)

We first see the XML data.

The contents of Phone.jsp are shown below.

<%@ page language="java"  %>

<%@ taglib uri="/webMathematica taglib" prefix="msp" %>

xml = Import[ ToFileName[ MSPPageDirectory[], "phone.xml"], 

"XML"] ;

If[ MSPValueQ[ $$name],

patt = "*" <> $$name <> "*";

xml = DeleteCases[xml, 

XMLElement[ "Person", {___, "Name" 

>n_/;!StringMatchQ[n, patt],___},_ ], Infinity]] ;

MSPReturn[ ExportString[ xml, "XML"], "text/xml"]

This  example  first  imports  the  XML  file  into Mathematica.  It  uses the  command  MSPPageDirectory  because

the XML data is located in the same directory as Phone.jsp. It then checks to see if a parameter name was sent.

If this is the case, then it uses this to discard XML elements that don t match this name. You should be able to see

the  operation  of  this  parameter  with  a  URL  such  as    http://localhost:8080/webMathematica/Examples/XML/ 

Phone.jsp?name=T. (You may have some other URL for accessing your server.)

Of course, you may want to use this XML data for further processing. If you have a system that is XML aware this

is  quite  straightforward.  One  useful  application  that  is  XML aware  is  of  course  Mathematica.  For  example,  the

following will call your webMathematica site and retrieve the information.

In[1]:=

XML Parser XMLGet@"http:eelocalhost:8080ewebMathematicaeExampleseXMLePhone.jsp"D

Out[1]=

XMLObject@DocumentD@

8XMLObject@DeclarationD@Version O 1.0D<, XMLElement@EmployeeList, 8<,

8XMLElement@Person, 8Name O Tom Jones, Email O tomj, Phone O 235 1231<, 8