jsr181handlermapping.java

Xfire文件 用于开发web service 的一个开源工具 很好用的

package org.codehaus.xfire.spring.remoting;

import java.lang.reflect.Modifier;
import java.util.List;

import javax.xml.namespace.QName;

import org.codehaus.xfire.XFire;
import org.codehaus.xfire.aegis.AegisBindingProvider;
import org.codehaus.xfire.aegis.type.TypeMappingRegistry;
import org.codehaus.xfire.annotations.AnnotationServiceFactory;
import org.codehaus.xfire.annotations.AnnotationsValidator;
import org.codehaus.xfire.annotations.WebAnnotations;
import org.codehaus.xfire.service.Service;
import org.codehaus.xfire.service.invoker.BeanInvoker;
import org.codehaus.xfire.spring.SpringUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanIsAbstractException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.web.servlet.handler.AbstractUrlHandlerMapping;

/**
 * Implementation of the {@link org.springframework.web.servlet.HandlerMapping} interface that recognizes {@link
 * org.codehaus.xfire.annotations.WebServiceAnnotation web service annotations} on Spring-managed beans and
 * automatically wires them into the current servlet's WebApplicationContext.
 * <p/>
 * All beans Services are exposed by their {@link org.codehaus.xfire.annotations.WebServiceAnnotation#getServiceName()
 * service name}, with a defined {@link #setUrlPrefix(String) prefix}. For instance, a bean annotated with the service
 * name <code>EchoService</code> will be exposed as <code>/services/EchoService</code>.
 *
 * @author <a href="mailto:[e-mail]">Arjen Poutsma</a>
 * @see WebAnnotations
 * @see org.codehaus.xfire.annotations.WebServiceAnnotation
 */
public class Jsr181HandlerMapping
        extends AbstractUrlHandlerMapping
{
    private WebAnnotations webAnnotations;
    private XFire xFire;
    private TypeMappingRegistry typeMappingRegistry;
    private String urlPrefix = "/services/";
    private String servletControllerAdapterName;
    private AnnotationServiceFactory serviceFactory;
    private AnnotationsValidator validator;
    
    private List inHandlers;
    private List outHandlers;
    private List faultHandlers;
    
    protected void initApplicationContext()
            throws BeansException
    {
        if (serviceFactory == null) {
        	serviceFactory = createServiceFactory();
        }

        ApplicationContext context = getApplicationContext();
 
        while (true)
        {
            if (context == null) break;
            
            processBeans(context, serviceFactory);

            context = context.getParent();
        }
    }

	public AnnotationServiceFactory getServiceFactory() {
		return serviceFactory;
	}

	public void setServiceFactory(AnnotationServiceFactory serviceFactory) {
		this.serviceFactory = serviceFactory;
	}

	private AnnotationServiceFactory createServiceFactory() {
		AegisBindingProvider provider;
        if (typeMappingRegistry == null)
            provider = new AegisBindingProvider();
        else
            provider = new AegisBindingProvider(typeMappingRegistry);
        
        AnnotationServiceFactory serviceFactory =
                new AnnotationServiceFactory(webAnnotations,
                                             xFire.getTransportManager(),
                                             provider);
        if( validator != null ){
        	serviceFactory.setValidator(validator);
        }
		return serviceFactory;
	}

    private void processBeans(ApplicationContext beanFactory, AnnotationServiceFactory serviceFactory)
    {
        String[] beanNames = beanFactory.getBeanDefinitionNames();

        ConfigurableApplicationContext ctxt = (ConfigurableApplicationContext) beanFactory;

        // Take any bean name or alias that has a web service annotation
        for (int i = 0; i < beanNames.length; i++)
        {
            BeanDefinition def = ctxt.getBeanFactory().getBeanDefinition(beanNames[i]);
    
            if (!def.isSingleton() || def.isAbstract()) continue;
            
            Class clazz;
            Object bean;
            try
            {
                clazz = getApplicationContext().getType(beanNames[i]);
                bean = beanFactory.getBean(beanNames[i]);
                try
                {
                    clazz = SpringUtils.getUserTarget(bean).getClass();
                }
                catch (Exception e)
                {
                    logger.error("Failed to get the User Target Class of bean " + beanNames[i], e);
                }
            }
            catch (BeanIsAbstractException e)
            {
                // The bean is abstract, we won't be doing anything with it.
                continue;
            }

            if (clazz != null && 
                    !Modifier.isAbstract(clazz.getModifiers()) && 
                    webAnnotations.hasWebServiceAnnotation(clazz))
            {
                Service endpoint = serviceFactory.create(clazz);
                customizeService(bean, endpoint);
            }
            else
            {
                if (logger.isDebugEnabled())
                {
                    logger.debug("Rejected bean '" + beanNames[i] + "' since it has no WebService annotation");
                }
            }
        }
    }

	protected void customizeService(Object bean, Service endpoint) {
		if (logger.isInfoEnabled())
		{
		    logger.info("Exposing  service " + endpoint.getName() + 
		                " to " + urlPrefix + endpoint.getSimpleName());
		}
		if( getInHandlers()!= null ){
			endpoint.getInHandlers().addAll(getInHandlers());	
		}
		
		if( getOutHandlers()!= null ){
			endpoint.getOutHandlers().addAll(getOutHandlers());	
		}
		
		if( getFaultHandlers()!= null ){
			endpoint.getFaultHandlers().addAll(getFaultHandlers());	
		}
		
		xFire.getServiceRegistry().register(endpoint);
		endpoint.setInvoker(new BeanInvoker(bean));
		Object controller = createController(endpoint.getName());
		registerHandler(urlPrefix + endpoint.getSimpleName(), controller);
	}
    
    public XFire getXFire() {
		return xFire;
	}

	/**
     * Creates the XFireServletControllerAdapter either indirectly using the 
     * XFireServletControllerAdapter prototype bean declared in the Spring app context,
     * or directly through the the constructor of XFireServletControllerAdapter. 
     * 
     * @param endpointName The endpointName to inject into the XFireServletControllerAdapter
     * @return A new instance of XFireServletControllerAdapter
     */
    private Object createController(QName endpointName) 
    {
        if (servletControllerAdapterName != null)
        {
            Object controller = getApplicationContext().getBean(servletControllerAdapterName);
            if (controller == null)
            {
                logger.error("Failed to find bean with name " + servletControllerAdapterName);
            }
            else
            {
                try
                {
                    XFireServletControllerAdapter xFireServletControllerAdapter = 
                        (XFireServletControllerAdapter) SpringUtils.getUserTarget(controller);
                    xFireServletControllerAdapter.setServiceName(endpointName);
                    return controller;
                }
                catch (Exception e)
                {
                    logger.error("Failed to create a Controller for endpoint " + endpointName, e);
                }
            }
        }
        return new XFireServletControllerAdapter(xFire, endpointName);
    }

    /**
     * Sets the web annotations implementation to use.
     */
    public void setWebAnnotations(WebAnnotations webAnnotations)
    {
        this.webAnnotations = webAnnotations;
    }

    /**
     * Sets the XFire instance.
     */
    public void setXfire(XFire xFire)
    {
        this.xFire = xFire;
    }

    /**
     * Sets the type mapping registry.
     */
    public void setTypeMappingRegistry(TypeMappingRegistry typeMappingRegistry)
    {
        this.typeMappingRegistry = typeMappingRegistry;
    }

    /**
     * Sets the url prefix used when exposing services. Defaults to <code>/services/</code>.
     */
    public void setUrlPrefix(String urlPrefix)
    {
        this.urlPrefix = urlPrefix;
    }

    public void setServletControllerAdapterName(String servletControllerAdapterName) 
    {
        this.servletControllerAdapterName = servletControllerAdapterName;
    }

	public List getInHandlers() {
		return inHandlers;
	}

	public void setInHandlers(List inHandlers) {
		this.inHandlers = inHandlers;
	}

	public List getOutHandlers() {
		return outHandlers;
	}

	public void setOutHandlers(List outHandlers) {
		this.outHandlers = outHandlers;
	}

	public List getFaultHandlers() {
		return faultHandlers;
	}

	public void setFaultHandlers(List faultHandlers) {
		this.faultHandlers = faultHandlers;
	}

	public void setValidator(AnnotationsValidator validator) {
		this.validator = validator;
	}
    
    
}