Running servlets inside Equinox/Eclipse

• Creating plug-in hosting servlet
  • Create new plug-in project
  • Add plug-in dependencies
    • javax.servlet
    • org.eclipse.equinox.http.registry
  • Add extension: org.eclipse.equinox.http.registry.servlets
  • Configure servlet mapping in extension definition

    <?xml version="1.0" encoding="UTF-8"?>
    <?eclipse version="3.4"?>
    <plugin>
     
    	<extension point="org.eclipse.equinox.http.registry.servlets">
    		<servlet alias="/echo" class="servlets.EchoServlet" />
    	</extension>
     
    </plugin>

  • Create servlet class

    package servlets;
    
    package servlets;
    
    import java.io.IOException;
    import java.io.PrintWriter;
    
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    public class EchoServlet extends HttpServlet {
    
    	private static final long serialVersionUID = 137926368689939745L;
    
    	@Override
    	protected void doGet(HttpServletRequest request,
    			HttpServletResponse response) {
    
    		String value = request.getParameter("value");
    		PrintWriter writer;
    		try {
    			writer = response.getWriter();
    			String outputText = "Echo Servlet inside Equinox/Eclipse says: "
    					+ value;
    			System.out.println(outputText);
    			writer.write(outputText);
    			writer.close();
    		} catch (IOException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    	}
    }

• Running plug-in hosting servlets in Eclipse IDE
  • Create new Run Configuration
  • Choose OSGi Framework
  • Deselect all preselected plug-ins from bundles list
  • Select only:
    • Newly created plug-in that’s hosting servlets
    • org.mortbay.jetty.server
    • org.eclipse.equinox.http.jetty
  • Use Add Required Bundles option
  • Save configuration and Run it
• Using servlet
  • By default when running this configuration Jetty will start on port 80
  • Open a browser and hit URL for this example http://localhost/echo?value=Hello