AppInitializer.java

package org.springframework.issues.config;

import java.util.EnumSet;

import javax.servlet.DispatcherType;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

import org.slf4j.Logger;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
import org.springframework.web.servlet.resource.ResourceUrlEncodingFilter;

/**
 *
 */
public class AppInitializer implements WebApplicationInitializer {
    @SuppressWarnings("unused")
    private static final Logger logger = org.slf4j.LoggerFactory.getLogger(AppInitializer.class);

    @Override
    public void onStartup(ServletContext container) {

        AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
        rootContext.register(AppRootConfig.class);

        // Manage the lifecycle of the root application context
        container.addListener(new ContextLoaderListener(rootContext));

        container.addFilter("resourceUrlEncodingFilter", ResourceUrlEncodingFilter.class).addMappingForUrlPatterns(
                EnumSet.allOf(DispatcherType.class), false, "/*");

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(WebConfig.class);

        // Register and map the dispatcher servlet
        ServletRegistration.Dynamic dispatcher = container.addServlet("dispatcher", new DispatcherServlet(
                dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }
}