使用Spring配置CXF以使用MOXY进行XML编组/解组

本文介绍了使用Spring配置CXF以使用MOXY进行XML编组/解组的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个Java服务器应用程序，它使用CXF提供SOAP和REST Web服务。目前它使用JAX-B的参考实现进行XML编组/解组，但我已经将它配置为用杰克逊代替Jettison进行JSON编组/解组。我使用Spring进行DI和应用程序上下文配置。

I have a Java server application that uses CXF to provide SOAP and REST web services. Currently it uses the reference implementation of JAX-B for XML marshalling/unmarshalling, but I have configured it to replace Jettison with Jackson for JSON marshalling/unmarshalling. I use Spring for DI and application context configuration.

REST Web服务配置片段如下所示：

The REST web service configuration snippets looks as follows:

web.xml

<servlet>
    <display-name>Myapp REST Services</display-name>
    <servlet-name>MyappWebServices</servlet-name>
    <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>MyappWebServices</servlet-name>
    <url-pattern>/services/*</url-pattern>
</servlet-mapping>

applicationContext.xml

<import resource="classpath:META-INF/cxf/cxf.xml" />
<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

<bean id="jsonProvider" class="org.codehaus.jackson.jaxrs.JacksonJsonProvider" />

<jaxrs:server id="myappCoreSvcRest" address="/rest">
    <jaxrs:serviceBeans>
        <ref bean="fooService" />
        <ref bean="barService" />
    </jaxrs:serviceBeans>

    <jaxrs:providers>
        <ref bean="jsonProvider" />
    </jaxrs:providers>
</jaxrs:server>

此配置有效，将返回XML或JSON，具体取决于HTTP Accept标头。我喜欢这个配置的是它基于Spring，并且创建和使用备用JSON编码器非常容易。有关配置CXF的详细信息，请访问领导和专家组。

Note: I'm the EclipseLink JAXB (MOXy) lead and a member of the JAXB (JSR-222) expert group.

我不知道CXF的确切配置，但是下面我提供了一些使用MOXy和Spring的链接。请随时，我可以帮助您实现这个：

Off hand I do not know the exact config for CXF, but below I have provided some links to using MOXy with Spring. Please feel free to contact me, and I can help you implement this:

http://blog.bdoughan.com/p/contact_01.html

当使用MOXy和JAX-RS实现时，你可以使用 ContextResolver 从MOXy的外部映射文件引导：

When using MOXy with a JAX-RS implementation you can use a ContextResolver to bootstrap from MOXy's external mapping file:

package blog.bindingfile.jaxrs;

import java.io.*;
import java.util.*;
import javax.ws.rs.Produces;
import javax.ws.rs.ext.*;
import javax.xml.bind.*;
import org.eclipse.persistence.jaxb.JAXBContextFactory;

import blog.bindingfile.Customer;

@Provider
@Produces({"application/xml", "application/json"})
public class CustomerContextResolver implements ContextResolver<JAXBContext> {

    private JAXBContext jc;

    public CustomerContextResolver() {
        ClassLoader cl = Customer.class.getClassLoader();
        InputStream bindings =
            cl.getResourceAsStream("blog/bindingfile/binding.xml");
        try {
            Map<String, Object> props = new HashMap<String, Object>(1);
            props.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY, bindings);
            jc = JAXBContext.newInstance(new Class[] {Customer.class} , props);
        } catch(JAXBException e) {
            throw new RuntimeException(e);
        } finally {
            try {
                bindings.close();
            } catch(IOException e) {
                throw new RuntimeException(e);
            }
        }
    }

    public JAXBContext getContext(Class<?> clazz) {
        if(Customer.class == clazz) {
            return jc;
        }
        return null;
    }

}

对于Complext示例

http://blog.bdoughan.com/2011/04/moxys-xml-metadata-in-jax-rs-service.html

有关在春天使用MOXy的更多信息

http://wiki.eclipse.org/EclipseLink/Examples/MOXy/Spring

是的，JSON绑定被添加到EclipseLink 2.4 。要在您的应用程序中利用它，应该只需创建一个 MessageBodyReader 和一个 MessageBodyWriter ：

Yes, JSON binding is being added to EclipseLink 2.4. To leverage this in your application it should be a simple matter of creating a MessageBodyReader and a MessageBodyWriter:

package org.example;

import java.io.*;
import java.lang.annotation.Annotation;
import java.lang.reflect.*;
import javax.xml.transform.stream.StreamSource;

import javax.ws.rs.*;
import javax.ws.rs.core.*;
import javax.ws.rs.ext.*;
import javax.xml.bind.*;

@Provider
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public class MOXyJSONProvider implements
    MessageBodyReader<Object>, MessageBodyWriter<Object>{

    @Context
    protected Providers providers;

    public boolean isReadable(Class<?> type, Type genericType,
        Annotation[] annotations, MediaType mediaType) {
        return true;
    }

    public Object readFrom(Class<Object> type, Type genericType,
            Annotation[] annotations, MediaType mediaType,
            MultivaluedMap<String, String> httpHeaders, InputStream entityStream)
            throws IOException, WebApplicationException {
            try {
                Class<?> domainClass = getDomainClass(genericType);
                Unmarshaller u = getJAXBContext(domainClass, mediaType).createUnmarshaller();
                u.setProperty("eclipselink.media-type", mediaType.toString());
                u.setProperty("eclipselink.json.include-root", false);
                return u.unmarshal(new StreamSource(entityStream), domainClass).getValue();
            } catch(JAXBException jaxbException) {
                throw new WebApplicationException(jaxbException);
            }
    }

    public boolean isWriteable(Class<?> type, Type genericType,
        Annotation[] annotations, MediaType mediaType) {
        return true;
    }

    public void writeTo(Object object, Class<?> type, Type genericType,
        Annotation[] annotations, MediaType mediaType,
        MultivaluedMap<String, Object> httpHeaders,
        OutputStream entityStream) throws IOException,
        WebApplicationException {
        try {
            Class<?> domainClass = getDomainClass(genericType);
            Marshaller m = getJAXBContext(domainClass, mediaType).createMarshaller();
            m.setProperty("eclipselink.media-type", mediaType.toString());
            m.setProperty("eclipselink.json.include-root", false);
            m.marshal(object, entityStream);
        } catch(JAXBException jaxbException) {
            throw new WebApplicationException(jaxbException);
        }
    }

    public long getSize(Object t, Class<?> type, Type genericType,
        Annotation[] annotations, MediaType mediaType) {
        return -1;
    }

    private JAXBContext getJAXBContext(Class<?> type, MediaType mediaType)
        throws JAXBException {
        ContextResolver<JAXBContext> resolver
            = providers.getContextResolver(JAXBContext.class, mediaType);
        JAXBContext jaxbContext;
        if(null == resolver || null == (jaxbContext = resolver.getContext(type))) {
            return JAXBContext.newInstance(type);
        } else {
            return jaxbContext;
        }
    }

    private Class<?> getDomainClass(Type genericType) {
        if(genericType instanceof Class) {
            return (Class<?>) genericType;
        } else if(genericType instanceof ParameterizedType) {
            return (Class<?>) ((ParameterizedType) genericType).getActualTypeArguments()[0];
        } else {
            return null;
        }
    }

}

你可以也可以创建 JSONProvider 的扩展名：

You may also be able to create an extension of JSONProvider:

http://cxf.apache.org/apidocs/org/apache/cxf/jaxrs/provider/JSONProvider.html

更多信息

MOXy as Your JAX-RS JSON Provider - Client Side
MOXy as Your JAX-RS JSON Provider - Server Side
Specifying EclipseLink MOXy as Your JAXB Provider

这篇关于使用Spring配置CXF以使用MOXY进行XML编组/解组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！