Spring Boot with JSF; Could not find backup for factory javax.faces.context.FacesContextFactory

Question

I\'m having some problems with Spring Boot and JSF. The servlet appears to start up correctly, but when I attempt to access a resource I get the following exception

Answer 1

probably you forget add listener com.sun.faces.config.ConfigureListener.class :

  @Bean
    public ServletContextInitializer servletContextInitializer() {

        return sc -> {
            ***sc.addListener(com.sun.faces.config.ConfigureListener.class);***
            sc.setInitParameter("com.sun.faces.expressionFactory", "com.sun.el.ExpressionFactoryImpl");
            sc.setInitParameter("com.sun.faces.forceLoadConfiguration", Boolean.TRUE.toString());
            sc.setInitParameter("facelets.DEVELOPMENT", Boolean.TRUE.toString());
            sc.setInitParameter("javax.faces.DEFAULT_SUFFIX", ".xhtml");
            sc.setInitParameter("javax.faces.FACELETS_LIBRARIES", "springsecurity.taglib.xml");
            sc.setInitParameter("javax.faces.FACELETS_REFRESH_PERIOD", "1");
            sc.setInitParameter("javax.faces.FACELETS_SKIP_COMMENTS", Boolean.TRUE.toString());
            sc.setInitParameter("javax.faces.PARTIAL_STATE_SAVING_METHOD", Boolean.TRUE.toString());
            sc.setInitParameter("javax.faces.PROJECT_STAGE", "Development");
            sc.setInitParameter("javax.faces.STATE_SAVING_METHOD", "server");
            sc.setInitParameter("primefaces.CLIENT_SIDE_VALIDATION", Boolean.TRUE.toString());
            sc.setInitParameter("primefaces.FONT_AWESOME", Boolean.TRUE.toString());
            sc.setInitParameter("primefaces.THEME", "Omega");
        };
    }