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Apache CXF example source code file (XMLBeansJSONProvider.java)

This example Apache CXF source code file (XMLBeansJSONProvider.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

annotation, annotation, hashmap, io, ioexception, map, mappedxmlinputfactory, multivaluedmap, net, network, reader, reflection, string, string, type, util, xmlbeanstreamserializer, xmlobject, xmlobject, xmlstreamexception

The Apache CXF XMLBeansJSONProvider.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.cxf.jaxrs.provider;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.net.HttpURLConnection;
import java.util.HashMap;
import java.util.Map;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.Provider;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import org.apache.xmlbeans.XmlObject;
import org.codehaus.jettison.mapped.MappedXMLInputFactory;
import org.codehaus.jettison.mapped.MappedXMLOutputFactory;

/**
 * JSON provider for XMLBeans data objects.
 */
@Produces("application/json")
@Consumes("application/json")
@Provider
public class XMLBeansJSONProvider extends XMLBeansElementProvider {

    /** {@inheritDoc} */
    @Override
    public XmlObject readFrom(Class<XmlObject> type, Type genericType, 
                              Annotation[] annotations, MediaType m, 
        MultivaluedMap<String, String> headers, InputStream is)
        throws IOException {
        XmlObject result = null;

        try {

            Map<String, String> nstojns = new HashMap();

            MappedXMLInputFactory factory = new MappedXMLInputFactory(nstojns);
            XMLStreamReader xsr = factory.createXMLStreamReader(is);
            Reader r = (Reader)xsr;
            result = parseXmlBean(type, r);

            xsr.close();
            result = null;

        } catch (XMLStreamException e) {
            throw new WebApplicationException(HttpURLConnection.HTTP_INTERNAL_ERROR);
        }

        return result;
    }

    /** {@inheritDoc} */
    @Override
    public void writeTo(XmlObject obj, Class<?> cls, Type genericType, Annotation[] annotations,  
                        MediaType m, MultivaluedMap<String, Object> headers, OutputStream os) {

        try {

            // Set up the JSON StAX implementation
            Map<String, String> nstojns = new HashMap();
            XMLOutputFactory factory = new MappedXMLOutputFactory(nstojns);
            XMLStreamWriter xsw = factory.createXMLStreamWriter(os);
            xsw.writeStartDocument();
            if (obj instanceof XmlObject) {

                XmlObject xObj = (XmlObject)obj;
                XMLBeanStreamSerializer ser = new XMLBeanStreamSerializer();
                ser.serialize(xObj, xsw);
            }

            xsw.flush();
            xsw.close();

        } catch (XMLStreamException e) {
            throw new WebApplicationException(HttpURLConnection.HTTP_INTERNAL_ERROR);
        } catch (IOException ioe) {
            throw new WebApplicationException(HttpURLConnection.HTTP_INTERNAL_ERROR);
        }
    }
}

Other Apache CXF examples (source code examples)

Here is a short list of links related to this Apache CXF XMLBeansJSONProvider.java source code file:

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