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Java example source code file (XmlDataContentHandler.java)
The XmlDataContentHandler.java Java example source code/* * Copyright (c) 1997, 2012, 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.encoding; import com.sun.xml.internal.ws.util.xml.XmlUtil; import javax.activation.ActivationDataFlavor; import javax.activation.DataContentHandler; import javax.activation.DataSource; import javax.xml.transform.OutputKeys; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.stream.StreamResult; import javax.xml.transform.stream.StreamSource; import java.awt.datatransfer.DataFlavor; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.util.Arrays; /** * JAF data handler for XML content * * @author Jitendra Kotamraju */ public class XmlDataContentHandler implements DataContentHandler { private final DataFlavor[] flavors; public XmlDataContentHandler() throws ClassNotFoundException { flavors = new DataFlavor[3]; flavors[0] = new ActivationDataFlavor(StreamSource.class, "text/xml", "XML"); flavors[1] = new ActivationDataFlavor(StreamSource.class, "application/xml", "XML"); flavors[2] = new ActivationDataFlavor(String.class, "text/xml", "XML String"); } public DataFlavor[] getTransferDataFlavors() { return Arrays.copyOf(flavors, flavors.length); } public Object getTransferData(DataFlavor df, DataSource ds) throws IOException { for (DataFlavor aFlavor : flavors) { if (aFlavor.equals(df)) { return getContent(ds); } } return null; } /** * Create an object from the input stream */ public Object getContent(DataSource ds) throws IOException { String ctStr = ds.getContentType(); String charset = null; if (ctStr != null) { ContentType ct = new ContentType(ctStr); if (!isXml(ct)) { throw new IOException( "Cannot convert DataSource with content type \"" + ctStr + "\" to object in XmlDataContentHandler"); } charset = ct.getParameter("charset"); } return (charset != null) ? new StreamSource(new InputStreamReader(ds.getInputStream()), charset) : new StreamSource(ds.getInputStream()); } /** * Convert the object to a byte stream */ public void writeTo(Object obj, String mimeType, OutputStream os) throws IOException { if (!(obj instanceof DataSource || obj instanceof Source || obj instanceof String)) { throw new IOException("Invalid Object type = "+obj.getClass()+ ". XmlDataContentHandler can only convert DataSource|Source|String to XML."); } ContentType ct = new ContentType(mimeType); if (!isXml(ct)) { throw new IOException( "Invalid content type \"" + mimeType + "\" for XmlDataContentHandler"); } String charset = ct.getParameter("charset"); if (obj instanceof String) { String s = (String) obj; if (charset == null) { charset = "utf-8"; } OutputStreamWriter osw = new OutputStreamWriter(os, charset); osw.write(s, 0, s.length()); osw.flush(); return; } Source source = (obj instanceof DataSource) ? (Source)getContent((DataSource)obj) : (Source)obj; try { Transformer transformer = XmlUtil.newTransformer(); if (charset != null) { transformer.setOutputProperty(OutputKeys.ENCODING, charset); } StreamResult result = new StreamResult(os); transformer.transform(source, result); } catch (Exception ex) { throw new IOException( "Unable to run the JAXP transformer in XmlDataContentHandler " + ex.getMessage()); } } private boolean isXml(ContentType ct) { return ct.getSubType().equals("xml") && (ct.getPrimaryType().equals("text") || ct.getPrimaryType().equals("application")); } } Other Java examples (source code examples)Here is a short list of links related to this Java XmlDataContentHandler.java source code file: |
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