Tutorial: Step 3

Install the Cewolf Servlet in your Web App

The rendering of the entire chart is finally provided via a servlet. This has to be installed in your web application. Cewolf provides a servlet class de.laures.cewolf.CewolfRenderer which does the job.
To configure your web application you have to edit the /WEB-INF/web.xml file. Add the following lines to it:

<servlet>
    <servlet-name>CewolfServlet</servlet-name>
    <servlet-class>de.laures.cewolf.CewolfRenderer</servlet-class>
</servlet>

Additionally you should provide a servlet-mapping to tell the container which URL maps to your Cewolf rendering servlet.

<servlet-mapping>
    <servlet-name>CewolfServlet</servlet-name>
    <url-pattern>/cewolf/*</url-pattern>
</servlet-mapping>

To test the correct installation you should start your web app and try to call the rendering servlet with a browser (e.g. http://localhost:8080/myapp/cewolf?state). Cewolf should answer: "Cewolf servlet up and running."

Step 4: Define the Chart in your JSP>>