/**
* Licensed to Jasig under one or more contributor license
* agreements. See the NOTICE file distributed with this work
* for additional information regarding copyright ownership.
* Jasig 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.jasig.portal.spring.web.servlet.view;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dom4j.Document;
import org.dom4j.io.XMLWriter;
import org.springframework.web.servlet.view.AbstractView;
/**
* <p>Simple implementation of a Spring View for displaying XML Documents.</p>
*
* @author Drew Mazurek
* @author Jen Bourey, jbourey@unicon.net
* @version $Revision$
*/
public class XmlView extends AbstractView {
protected final Log logger = LogFactory.getLog(this.getClass());
/**
* Construct a new XmlView instance.
*/
public XmlView() {
setContentType("text/xml;charset=ISO-8859-1");
}
private String xmlKey = "xml";
/**
* Set the model key containing the XML.
*
* @param xmlKey
*/
public void setXmlKey(String xmlKey) {
this.xmlKey = xmlKey;
}
/*
* (non-Javadoc)
* @see org.springframework.web.servlet.view.AbstractView#renderMergedOutputModel(java.util.Map, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
@Override
@SuppressWarnings("unchecked")
protected void renderMergedOutputModel(Map model,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
response.setContentType(getContentType());
OutputStream output = response.getOutputStream();
OutputStreamWriter out = new OutputStreamWriter(output , "ISO-8859-1");
Object obj = model.get(xmlKey);
// if the object is a Document, convert it to XML
if (obj instanceof Document) {
Document document = (Document) model.get(xmlKey);
try {
XMLWriter writer = new XMLWriter(out);
writer.write(document);
writer.flush();
} catch (IOException ex) {
logger.error("IOException writing XML",ex);
}
}
// if the object is a String, just send it straight to the output
else if (obj instanceof String) {
String xml = (String) model.get(xmlKey);
out.write(xml);
out.flush();
}
}
}