| /* |
| * Copyright 2004-2005 The Apache Software Foundation or its licensors, |
| * as applicable. |
| * |
| * Licensed 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.jackrabbit.webdav.client.methods; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.commons.httpclient.methods.EntityEnclosingMethod; |
| import org.apache.jackrabbit.webdav.DavConstants; |
| import org.apache.jackrabbit.webdav.DavException; |
| import org.apache.jackrabbit.webdav.DavServletResponse; |
| import org.apache.jackrabbit.webdav.MultiStatus; |
| import org.apache.jackrabbit.webdav.xml.XmlSerializable; |
| import org.apache.jackrabbit.webdav.header.Header; |
| import org.apache.xml.serialize.OutputFormat; |
| import org.apache.xml.serialize.XMLSerializer; |
| import org.xml.sax.SAXException; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Document; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.ByteArrayOutputStream; |
| |
| /** |
| * <code>DavMethodBase</code>... |
| */ |
| public abstract class DavMethodBase extends EntityEnclosingMethod implements DavConstants { |
| |
| private static Logger log = Logger.getLogger(DavMethodBase.class); |
| static final DocumentBuilderFactory BUILDER_FACTORY = DocumentBuilderFactory.newInstance(); |
| static { |
| BUILDER_FACTORY.setNamespaceAware(true); |
| } |
| |
| public DavMethodBase(String uri) { |
| super(uri); |
| } |
| |
| /** |
| * |
| * @param header |
| */ |
| public void setRequestHeader(Header header) { |
| setRequestHeader(header.getHeaderName(), header.getHeaderValue()); |
| } |
| |
| /** |
| * |
| * @param requestBody |
| * @throws IOException |
| */ |
| public void setRequestBody(XmlSerializable requestBody) throws IOException { |
| try { |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| Document doc = BUILDER_FACTORY.newDocumentBuilder().newDocument(); |
| doc.appendChild(requestBody.toXml(doc)); |
| |
| OutputFormat format = new OutputFormat("xml", "UTF-8", true); |
| XMLSerializer serializer = new XMLSerializer(out, format); |
| serializer.setNamespaces(true); |
| serializer.asDOMSerializer().serialize(doc); |
| setRequestBody(out.toString()); |
| } catch (ParserConfigurationException e) { |
| throw new IOException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * Return the response body as <code>MultiStatus</code> object. |
| * |
| * @return |
| * @throws IOException if the response body could not be parsed |
| * @throws DavException if the status code is other than MultiStatus |
| */ |
| public MultiStatus getResponseBodyAsMultiStatus() throws IOException, DavException { |
| checkUsed(); |
| if (getStatusCode() == DavServletResponse.SC_MULTI_STATUS) { |
| return MultiStatus.createFromXml(getRootElement()); |
| } else { |
| throw new DavException(getStatusCode(), getName() + " resulted with unexpected status code: " + getStatusCode()); |
| } |
| } |
| |
| /** |
| * Parse the response body into an Xml <code>Document</code>. |
| * |
| * @return Xml document or <code>null</code> if the response stream is |
| * <code>null</code>. |
| * @throws IOException if the parsing fails. |
| */ |
| public Document getResponseBodyAsDocument() throws IOException { |
| InputStream in = getResponseBodyAsStream(); |
| if (in == null) { |
| return null; |
| } |
| try { |
| DocumentBuilder docBuilder = BUILDER_FACTORY.newDocumentBuilder(); |
| Document document = docBuilder.parse(in); |
| return document; |
| } catch (ParserConfigurationException e) { |
| throw new IOException(e.getMessage()); |
| } catch (SAXException e) { |
| throw new IOException(e.getMessage()); |
| } |
| } |
| |
| /** |
| * |
| * @return |
| * @throws IOException |
| */ |
| Element getRootElement() throws IOException { |
| Document document = getResponseBodyAsDocument(); |
| if (document != null) { |
| return document.getDocumentElement(); |
| } |
| return null; |
| } |
| |
| /** |
| * |
| * @return |
| * @throws IOException |
| */ |
| public DavException getResponseException() throws IOException { |
| checkUsed(); |
| if (getStatusCode() < DavServletResponse.SC_BAD_REQUEST) { |
| log.warn("Cannot retrieve exception from successful response."); |
| return null; |
| } |
| |
| // todo: build exception from response body if present. |
| |
| // fallback: no or unparsable response body |
| return new DavException(getStatusCode(), getStatusText()); |
| } |
| } |