Question

I use Spring Mvc and I would like to use an EL variable (e.g. ${pageContext.request.contextPath}) in a .js javascript file.

Is this possible? If so how?

Answer 1

You can make a template that contains the JS, and pass the contextPath as a variable that’s interpolated into the template.

@RequestMapping(value="path/to/handler", method = RequestMethod.GET, produces ="text/javascript")
public ModelAndView getJs(HttpServletRequest request) {
  String contextPath = request.getContextPath();
  return new ModelAndView("/path/to/js/", "contextPath", contextPath);
}

But why do you need to do this? The context path is available in the client as well

Edit:

For this to work you might have to set up a ViewResolver so that the template is processed (if you don’t have one already).

In the page you just include the script as normal:

<script type="text/javascript" src="path/to/handler" />