JSP-JS is a Java Server Pages rendering library for nodejs.

To render JSP to HTML, simply remove Java code. Currently supported tags are:

• <%@include%>
• <%@taglib tagdir="[path]">
• <%=..%>
• ${..}
• <c:if>
• <c:else>
• <c:choose>
• <c:when>
• <c:otherwise>
• <c:forEach>
• <c:set>
• <jsp:body>
• <jsp:doBody>
• <jsp:attribute>
• <jsp:invoke>

Run:

npm run demo

Then open your browser to http://localhost:8080/page/test.jsp.

Import he renderer like so:

const JSPJs = require('jsp-js').Renderer;

const jsp = new JSPJs(options);
jsp.render('file', data);

The renderer also provides a promise wrapper for easy integration in promise-based code:

jsp.renderPromise('file', data).then((html) => console.log(html));

The following options can be provided to the constructor:

• root: the root path where templates are
• tags: a library of custom tags
• globals: globally available data

Custom tags can be handled by providing them to the constructor options. These are anonymous functions that take the arguments:

• node the tag node being evaluated
• index the position of the node in the jsp template. Useful for debugging
• data the current context data (as an object)
• renderer the instanciated renderer

A custom tag handler must return a string.

Please read the code of test/tests.js to have an idea of how to integrate this library with Express.