Server not responding for some request

Question

I am having problem in some request access, in my web application. I am not able to figure out the issue.

In my we application servlet mapping configuration is like this..

 <servlet>
     <servlet-name>default</servlet-name>
     <servlet-class>org.eclipse.jetty.servlet.DefaultServlet</servlet-class>
     <load-on-startup>0</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

and the spring configuration for dispatcher servlet is like this.

In WebApplicationInitializerConfig

AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(DispatcherConfig.class);

        DispatcherServlet dispatcherServlet = new DispatcherServlet(dispatcherContext);
        ServletRegistration.Dynamic dispatcher;

        dispatcher = servletContext.addServlet("api/", dispatcherServlet);
        dispatcher.setLoadOnStartup(1);


        String apiMappingPath = /api/*;

        dispatcher.addMapping(apiMappingPath);

When I make some API request, the call goes to the method and method sout also print in server log.But no response comes out.

For information I am deploying the application on glassfish server.

I am not able to get the issue reason also. If any one knows then help me out.

Method code:

 @RequestMapping(value = "/email", method = RequestMethod.POST)
    public Map passwordResetMail(@RequestBody(required = false) String email, HttpServletRequest request, HttpServletResponse response) {

        system.out.println("email"+email);
            Map map = new HashMap();
           map.put("email",email);
          return map;
}