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Apache CXF example source code file (MessageModeInInterceptor.java)

This example Apache CXF source code file (MessageModeInInterceptor.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

cachedoutputstream, content-type, datasource, datasource, inputstream, io, ioexception, ioexception, messagecontentslist, multipartdatasource, object, object, qname, string, string, util

The Apache CXF MessageModeInInterceptor.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.jaxws.interceptors;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Iterator;
import java.util.List;

import javax.activation.DataSource;
import javax.xml.namespace.QName;
import javax.xml.soap.SOAPMessage;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamSource;

import org.apache.cxf.attachment.AttachmentUtil;
import org.apache.cxf.helpers.LoadingByteArrayOutputStream;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.message.Attachment;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageContentsList;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.service.model.BindingOperationInfo;
import org.apache.cxf.staxutils.StaxSource;
import org.apache.cxf.staxutils.StaxUtils;
import org.apache.cxf.staxutils.W3CDOMStreamReader;

public class MessageModeInInterceptor extends AbstractPhaseInterceptor<Message> {
    Class<?> type;
    QName bindingName;
    
    Class<?> soapMsgClass;
    
    public MessageModeInInterceptor(Class<?> c, QName bName) {
        super(Phase.POST_LOGICAL);
        bindingName = bName;
        type = c;
        try {
            soapMsgClass = Class.forName("javax.xml.soap.SOAPMessage");
        } catch (Throwable t) {
            soapMsgClass = null;
        }
    }

    public void handleMessage(Message message) throws Fault {
        if (!bindingName.equals(message.getExchange().get(BindingOperationInfo.class)
                               .getBinding().getName())) {
            return;
        }
        Object o = message.getContent(soapMsgClass);
        if (o != null) {
            doFromSoapMessage(message, o);
        } else if (DataSource.class.isAssignableFrom(type)) {
            doDataSource(message);
        }

    }

    private void doDataSource(final Message message) {
        MessageContentsList list = (MessageContentsList)message.getContent(List.class); 
        //reconstitute all the parts into a Mime data source
        if (message.getAttachments() != null && !message.getAttachments().isEmpty() 
            && list != null 
            && !list.isEmpty() && list.get(0) instanceof DataSource) {
            list.set(0, new MultiPartDataSource(message, (DataSource)list.get(0)));
        }
    }

    private void doFromSoapMessage(Message message, Object sm) {
        SOAPMessage m = (SOAPMessage)sm;
        MessageContentsList list = (MessageContentsList)message.getContent(List.class); 
        if (list == null) {
            list = new MessageContentsList();
            message.setContent(List.class, list);
        }
        Object o = m;
        
        if (StreamSource.class.isAssignableFrom(type)) {
            try {
                CachedOutputStream out = new CachedOutputStream();
                try {
                    XMLStreamWriter xsw = StaxUtils.createXMLStreamWriter(out);
                    StaxUtils.copy(new DOMSource(m.getSOAPPart()), xsw);
                    xsw.close();
                    o = new StreamSource(out.getInputStream());
                } finally {
                    out.close();
                }
            } catch (Exception e) {
                throw new Fault(e);
            }
        } else if (SAXSource.class.isAssignableFrom(type)) {
            o = new StaxSource(new W3CDOMStreamReader(m.getSOAPPart()));
        } else if (Source.class.isAssignableFrom(type)) {
            o = new DOMSource(m.getSOAPPart());
        }
        list.set(0, o);
    }
    
    private static class MultiPartDataSource implements DataSource {
        final Iterator<Attachment> atts;
        final String contentType;
        final String boundary;
        final String start;
        
        final LoadingByteArrayOutputStream bout = new LoadingByteArrayOutputStream();
        Writer writer;
        
        DataSource rootPart;
        InputStream current;
        boolean writingHeaders;
        Attachment att;
        
        public MultiPartDataSource(Message message, DataSource root) {
            atts = message.getAttachments().iterator();
            String s = (String)message.get(Message.CONTENT_TYPE);
            boundary = findBoundary(s);
            start = findStart(s);
            if (!s.contains(boundary)) {
                s += "; boundary=\"" + boundary + "\"";
            }
            contentType = s;
            rootPart = root;
            try {
                writer = new OutputStreamWriter(bout, "ASCII");
                writer.append("Content-Type: ").append(contentType).append("\r\n\r\n");
                writer.flush();
                current = bout.createInputStream();
            } catch (Exception e) {
                //nothing
            }
        }

        public String getContentType() {
            return contentType;
        }
        public InputStream getInputStream() throws IOException {
            return new InputStream() {
                public int read() throws IOException {
                    int i = current.read();
                    if (i == -1) {
                        nextCurrent();
                        i = current.read();
                    }
                    return i;
                }
            };
        }
        private void nextCurrent() throws IOException {
            if (rootPart != null) {
                if (writingHeaders) {
                    writingHeaders = false;
                    current = rootPart.getInputStream();
                    rootPart = null;
                } else {
                    writingHeaders = true;
                    bout.reset();
                    writer.append("--").append(boundary).append("\r\n");
                    writer.append("Content-Type: ").append(rootPart.getContentType()).append("\r\n");
                    writer.append("Content-ID: <").append(start).append(">\r\n\r\n");
                    writer.flush();
                    current = bout.createInputStream();
                }
            } else {
                if (writingHeaders) {
                    writingHeaders = false;
                    current = att.getDataHandler().getInputStream();
                } else if (atts.hasNext()) {
                    att = atts.next();
                    writingHeaders = true;
                    bout.reset();
                    writer.append("\r\n");
                    writer.append("--").append(boundary).append("\r\n");
                    Iterator<String> heads = att.getHeaderNames();
                    while (heads.hasNext()) {
                        String s = heads.next();
                        writer.append(s).append(": ").append(att.getHeader(s)).append("\r\n");
                    }
                    writer.append("\r\n");
                    writer.flush();
                    current = bout.createInputStream();
                }
            }
        }
        public String getName() {
            return null;
        }
        public OutputStream getOutputStream() throws IOException {
            return null;
        }

        private String findStart(String ct) {
            int idx = ct.indexOf("start=");
            if (idx == -1) {
                return "root";
            }
            ct = ct.substring(idx + 6);
            if (ct.charAt(0) == '"') {
                ct = ct.substring(1);
                idx = ct.indexOf('"');
                return ct.substring(0, idx);
            }
            idx = ct.indexOf(';');
            if (idx == -1) {
                return ct;
            }
            return ct.substring(0, idx);
        }

        private String findBoundary(String ct) {
            int idx = ct.indexOf("boundary=");
            if (idx == -1) {
                return AttachmentUtil.getUniqueBoundaryValue();
            }
            ct = ct.substring(idx + 9);
            if (ct.charAt(0) == '"') {
                ct = ct.substring(1);
                idx = ct.indexOf('"');
                return ct.substring(0, idx);
            }
            idx = ct.indexOf(';');
            if (idx == -1) {
                return ct;
            }
            return ct.substring(0, idx);
        }
    }
}

Other Apache CXF examples (source code examples)

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