WebConfiguration.java

package au.com.mountainpass.hyperstate.server;

import org.springframework.context.annotation.Configuration;
import org.springframework.http.MediaType;
import org.springframework.web.context.support.SpringBeanAutowiringSupport;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import au.com.mountainpass.hyperstate.core.MediaTypes;

@Configuration
public class WebConfiguration extends WebMvcConfigurerAdapter {

    @Override
    public void configureContentNegotiation(
            ContentNegotiationConfigurer configurer) {
        configurer.favorPathExtension(true).favorParameter(true)
                .parameterName("mediaType").ignoreAcceptHeader(false)
                .useJaf(false).defaultContentType(MediaType.TEXT_HTML)
                .mediaType("json", MediaType.APPLICATION_JSON)
                .mediaType("html", MediaType.TEXT_HTML)
                .mediaType("siren", MediaTypes.SIREN_JSON);
    }

    @Override
    public void configureDefaultServletHandling(
            DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

    private static final String[] SERVLET_RESOURCE_LOCATIONS = { "/" };

    private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
            "classpath:/META-INF/resources/", "classpath:/resources/",
            "classpath:/static/", "classpath:/public/" };

    private static final String[] RESOURCE_LOCATIONS;

    static {
        RESOURCE_LOCATIONS = new String[CLASSPATH_RESOURCE_LOCATIONS.length
                + SERVLET_RESOURCE_LOCATIONS.length];
        System.arraycopy(SERVLET_RESOURCE_LOCATIONS, 0, RESOURCE_LOCATIONS, 0,
                SERVLET_RESOURCE_LOCATIONS.length);
        System.arraycopy(CLASSPATH_RESOURCE_LOCATIONS, 0, RESOURCE_LOCATIONS,
                SERVLET_RESOURCE_LOCATIONS.length,
                CLASSPATH_RESOURCE_LOCATIONS.length);
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        if (!registry.hasMappingForPattern("/webjars/**")) {
            registry.addResourceHandler("/webjars/**").addResourceLocations(
                    "classpath:/META-INF/resources/webjars/");
        }
        if (!registry.hasMappingForPattern("/**")) {
            registry.addResourceHandler("/**")
                    .addResourceLocations(RESOURCE_LOCATIONS);
        }
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new ResponseHeaderInterceptor());
        SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
    }

}