3. Basic Examples
| Documentation3. Basic Examples |
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If you installed webMathematica as described above, you should be able to connect to this JSP via http://localhost:8080/webMathematica/Examples/Hello.jsp. (You may have some other URL for accessing your server.)
This example evaluates the Date[] function of Mathematica. The result changes each time the page is accessed, demonstrating that this really is a dynamic process. The source for this page is in webMathematica/Examples/Hello.jsp.
<%@ page language="java" %>
<%@ taglib uri="/webMathematica-taglib" prefix="msp" %> standard jsp
headers
<html> standard html tags
<head>
<title>Hello World (The MSP Taglib)</title>
</head>
<body>
<h1>Hello World (The MSP Taglib)</h1>
<msp:allocateKernel> allocate a Mathematica kernel
<h4>Date[]</h4>
<msp:evaluate>
Date::usage evaluated by Mathematica
</msp:evaluate>
<p>Its current value is:</p>
<msp:evaluate>
Date[] evaluated by Mathematica
</msp:evaluate>
</msp:allocateKernel> free the Mathematica kernel
</body>
</html>
This page uses standard HTML tags as well as special webMathematica tags; these have the form <msp:tag>. The webMathematica tags are executed from the top of the page to the bottom. The <msp:allocate> tag causes a Mathematica kernel to be allocated to use for computations. The contents of the <msp:evaluate> tags are sent to Mathematica for computation with the result inserted into the final page. The </msp:allocate> tag frees the Mathematica kernel to be used for another computation.
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