HierarchicalWSSpringServlet

import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.BeanUtils;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.web.context.ConfigurableWebApplicationContext;
import org.springframework.web.context.ConfigurableWebEnvironment;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.springframework.web.context.support.XmlWebApplicationContext;

import com.sun.xml.ws.transport.http.servlet.ServletAdapterList;
import com.sun.xml.ws.transport.http.servlet.SpringBinding;
import com.sun.xml.ws.transport.http.servlet.SpringBindingList;
import com.sun.xml.ws.transport.http.servlet.WSServletDelegate;

public class HierarchicalWSSpringServlet extends HttpServlet {

    private static final long serialVersionUID = 8701641714441040772L;

    private WebApplicationContext webApplicationContext;
    private WSServletDelegate delegate;

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);


        // get the configured adapters from Spring
        WebApplicationContext rootContext = WebApplicationContextUtils
                .getRequiredWebApplicationContext(getServletContext());

        WebApplicationContext wac = null;

        ConfigurableWebApplicationContext cwac = (ConfigurableWebApplicationContext) BeanUtils
                .instantiateClass(XmlWebApplicationContext.class);

        cwac.setParent(rootContext);
        cwac.setConfigLocation("/WEB-INF/spring/jaxws/*.xml");

        cwac.setId("jaxws-context");
        cwac.setServletContext(getServletContext());
        cwac.setServletConfig(config);
        cwac.setNamespace(config.getServletName());

        ConfigurableEnvironment env = cwac.getEnvironment();
        if (env instanceof ConfigurableWebEnvironment) {
            ((ConfigurableWebEnvironment) env).initPropertySources(
                    getServletContext(), config);
        }

        cwac.refresh();

        wac = cwac;
        this.webApplicationContext = wac;

        Set<SpringBinding> bindings = new LinkedHashSet<SpringBinding>();

        // backward compatibility. recognize all bindings
        Map<String, SpringBindingList> m = wac.getBeansOfType(SpringBindingList.class);
        for (SpringBindingList sbl : m.values())
            bindings.addAll(sbl.getBindings());

        bindings.addAll(wac.getBeansOfType(SpringBinding.class).values());

        // create adapters
        ServletAdapterList l = new ServletAdapterList(getServletContext());
        for (SpringBinding binding : bindings)
            binding.create(l);

        delegate = new WSServletDelegate(l, getServletContext());
    }

    @Override
    public void destroy() {
        if (this.webApplicationContext instanceof ConfigurableApplicationContext) {
            ((ConfigurableApplicationContext) this.webApplicationContext).close();
        }
        delegate.destroy();
        delegate = null;
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        delegate.doPost(request, response, getServletContext());
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        delegate.doGet(request, response, getServletContext());
    }

    @Override
    protected void doPut(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        delegate.doPut(request, response, getServletContext());
    }

    @Override
    protected void doDelete(HttpServletRequest request, HttpServletResponse response)
            throws ServletException {
        delegate.doDelete(request, response, getServletContext());
    }
}