[FIXED] Getting 'java.lang.IllegalStateException: Multiple servlets map to path /*' error even though single servlet is present

Issue

I am getting an error even though there is a single servlet in my code.

WARN  2021-04-06 21:52:42,874  [main] org.eclipse.jetty.util.component.AbstractLifeCycle: FAILED ServletHandler@93501be{FAILED}: java.lang.IllegalStateException: Multiple servlets map to path /*: git.service.http.MyServlet68360fb9[mapped:EMBEDDED:null],io.dropwizard.jersey.setup.JerseyServletContainer-713e49c3[mapped:EMBEDDED:null]
java.lang.IllegalStateException: Multiple servlets map to path /*: git.service.http.MyServlet68360fb9[mapped:EMBEDDED:null],io.dropwizard.jersey.setup.JerseyServletContainer-713e49c3[mapped:EMBEDDED:null]

Below is my code:

environment
   .getApplicationContext()
   .addServlet(
           new ServletHolder(
                 new MyServlet(
                        injector.getInstance(HttpRepositoryResolver.class))),
           “/*“);

Can anyone help me figure it out?

Solution

Both git.service.http.MyServlet and io.dropwizard.jersey.setup.JerseyServletContainer are registered to the url-pattern /*.

Keep in mind that with Servlets, there's no such thing as optional handling of a request.

If the requested resource matches the url-pattern, it's sent to that Servlet, it MUST handle that request, it cannot go "oh, nah, not for me, let someone else handle this request".

I would suggest putting Jersey on something specific like /api/* or /rest/* as a url-pattern.

Answered By - Joakim Erdfelt