Configuring Servlets

Configuring Global Servlets

These Servlets will be available on all Microservices sharing a core Spring context.

In order to automagically add a Servlet to your Microservice, implement the interface ServletConfiguration on a Spring bean. If the bean implementing ServletConfiguration is also a Servle only the method getMapping() need be implemented. This will be the context URL of your Servlet.

     public Class<? extends Servlet> getServlet()

Override the above method to configure a specified Servlet class. Typically used for Servlets in external jar files.

     public String getName()

To change the Servlet name to something other than the Class name.

     public Map<String,String> getInitParameters()

To configure the init parameters for the Servlet public Map<String,String> getInitParameters(){ return ImmutableMap.of(); }

@Component
public class AutodiscoveredServlet extends HttpServlet 
                       implements ServletConfiguration {

@Override
public String[] getMapping() {
	return new String[] { "/servlet" };
}

@Override
protected void doGet(HttpServletRequest req, 
                             HttpServletResponse resp)
		throws ServletException, IOException {

	resp.setContentType("text/html");
	resp.getWriter().write("hello world");
}
}

#Configuring Local Servlets

These Servlets will only be available on the Microservice modules they are configured against.

In your Module object override

 public Map<String,Servelt> getServlets()

To configure module local servlets and their contexts Urls .

 public Class<? extends ServletConfiguration>[] getServletConfigurationClass()