Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 package com.sun.xml.internal.ws.commons.xmlutil;

 import com.sun.istack.internal.NotNull;

 import com.sun.istack.internal.logging.Logger;

 import com.sun.xml.internal.ws.api.message.Message;

 import com.sun.xml.internal.ws.api.message.Messages;

 import com.sun.xml.internal.ws.api.message.Packet;

 import com.sun.xml.internal.ws.util.xml.XmlUtil;

 import javax.xml.stream.*;

 import javax.xml.xpath.XPathFactoryConfigurationException;

 import java.io.*;

 import java.lang.reflect.Constructor;

 import java.util.concurrent.atomic.AtomicBoolean;

 import java.util.logging.Level;

 /**

  * Utility class that provides conversion of different XML representations

  * from/to various other formats

  *

  * @author Marek Potociar

  */

 public final class Converter {

     public static final String UTF_8 = "UTF-8";

     private Converter() {

         // prevents instantiation

     }

     private static final Logger LOGGER = Logger.getLogger(Converter.class);

     private static final XMLOutputFactory xmlOutputFactory = XMLOutputFactory.newInstance();

     private static final AtomicBoolean logMissingStaxUtilsWarning = new AtomicBoolean(false);

     /**

      * Converts a throwable to String

      *

      * @param throwable

      * @return String representation of throwable

      */

     public static String toString(Throwable throwable) {

         if (throwable == null) {

             return "[ No exception ]";

         }

         StringWriter stringOut = new StringWriter();

         throwable.printStackTrace(new PrintWriter(stringOut));

         return stringOut.toString();

     }

     public static String toString(Packet packet) {

         if (packet == null) {

             return "[ Null packet ]";

         } else if (packet.getMessage() == null) {

                 return "[ Empty packet ]";

         }

         return toString(packet.getMessage());

     }

     public static String toString(Message message) {

         if (message == null) {

             return "[ Null message ]";

         }

         StringWriter stringOut = null;

         try {

             stringOut = new StringWriter();

             XMLStreamWriter writer = null;

             try {

                 writer = xmlOutputFactory.createXMLStreamWriter(stringOut);

                 writer = createIndenter(writer);

                 message.copy().writeTo(writer);

             } catch (Exception e) { // WSIT-1596 - Message Dumping should not affect other processing

                 LOGGER.log(Level.WARNING, "Unexpected exception occured while dumping message", e);

             } finally {

                 if (writer != null) {

                     try {

                         writer.close();

                     } catch (XMLStreamException ignored) {

                         LOGGER.fine("Unexpected exception occured while closing XMLStreamWriter", ignored);

                     }

                 }

             }

             return stringOut.toString();

         } finally {

             if (stringOut != null) {

                 try {

                     stringOut.close();

                 } catch (IOException ex) {

                     LOGGER.finest("An exception occured when trying to close StringWriter", ex);

                 }

             }

         }

     }

     public static byte[] toBytes(Message message, String encoding) throws XMLStreamException {

         ByteArrayOutputStream baos = new ByteArrayOutputStream();

         try {

             if (message != null) {

                 XMLStreamWriter xsw = xmlOutputFactory.createXMLStreamWriter(baos, encoding);

                 try {

                     message.writeTo(xsw);

                 } finally {

                     try {

                         xsw.close();

                     } catch (XMLStreamException ex) {

                         LOGGER.warning("Unexpected exception occured while closing XMLStreamWriter", ex);

                     }

                 }

             }

             return baos.toByteArray();

         } finally {

             try {

                 baos.close();

             } catch (IOException ex) {

                 LOGGER.warning("Unexpected exception occured while closing ByteArrayOutputStream", ex);

             }

         }

     }

     /**

      * Converts JAX-WS RI message represented as input stream back to Message

      * object.

      *

      * @param dataStream message data stream

      * @param encoding message data stream encoding

      *

      * @return {@link com.sun.xml.internal.ws.api.message.Message} object created from the data stream

      */

     public static Message toMessage(@NotNull InputStream dataStream, String encoding) throws XMLStreamException {

         XMLStreamReader xsr = XmlUtil.newXMLInputFactory(true).createXMLStreamReader(dataStream, encoding);

         return Messages.create(xsr);

     }

     public static String messageDataToString(final byte[] data, final String encoding) {

         try {

             return toString(toMessage(new ByteArrayInputStream(data), encoding));

             // closing ByteArrayInputStream has no effect, so ignoring the redundant call

         } catch (XMLStreamException ex) {

             LOGGER.warning("Unexpected exception occured while converting message data to string", ex);

             return "[ Message Data Conversion Failed ]";

         }

     }

     /**

      * Wraps {@link javax.xml.stream.XMLStreamWriter} by an indentation engine if possible.

      *

      * <p>

      * We can do this only when we have <tt>stax-utils.jar</tt> in the class path.

      */

     private static XMLStreamWriter createIndenter(XMLStreamWriter writer) {

         try {

             Class<?> clazz = Converter.class.getClassLoader().loadClass("javanet.staxutils.IndentingXMLStreamWriter");

             Constructor<?> c = clazz.getConstructor(XMLStreamWriter.class);

             writer = XMLStreamWriter.class.cast(c.newInstance(writer));

         } catch (Exception ex) {

             // if stax-utils.jar is not in the classpath, this will fail

             // so, we'll just have to do without indentation

             if (logMissingStaxUtilsWarning.compareAndSet(false, true)) {

                 LOGGER.log(Level.WARNING, "Put stax-utils.jar to the classpath to indent the dump output", ex);

             }

         }

         return writer;

     }

 }