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/*
* 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.
*/
/*
* $Id: UseStylesheetParamServlet.java 470245 2006-11-02 06:34:33Z minchau $
*/
/*
Simple Servlet Example using a stylesheet parameter
*/
package servlet;
// Imported TraX classes
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerConfigurationException;
// Imported SAX classes
import org.xml.sax.SAXException;
// Imported java.io and javax.servlet classes
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class UseStylesheetParamServlet extends HttpServlet {
/**
* String representing the file separator characters for the System.
*/
public final static String FS = System.getProperty("file.separator");
PrintWriter out;
String xslFile, xmlFile, paramValue;
public void doGet(HttpServletRequest req,
HttpServletResponse res)
throws ServletException, IOException {
try {
res.setContentType("text/html; charset=UTF-8");
out = res.getWriter();
paramValue = req.getParameter("PVAL");
xmlFile = req.getParameter("XML");
xslFile = req.getParameter("XSL");
if (paramValue == null) {
out.println(
"<h1>No input for paramValue</h1>");
return;
}
if ( xmlFile == null) {
out.println(
"<h1>No input for xmlFile</h1>");
return;
}
if ( xslFile == null) {
out.println(
"<h1>No input for xslFile</h1>");
return;
}
// get the real path for xml and xsl files;
String ctx = getServletContext().getRealPath("") + FS;
xslFile = ctx + xslFile;
xmlFile = ctx + xmlFile;
TransformerFactory tFactory =
TransformerFactory.newInstance();
Transformer transformer =
tFactory.newTransformer(new StreamSource(xslFile));
// Set the stylesheet parameter (named param1).
transformer.setParameter("param1", paramValue);
// Perform the transformation.
transformer.transform(new StreamSource(xmlFile),
new StreamResult(out));
}
catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
catch (TransformerException e) {
e.printStackTrace(out);
return;
}
}
}
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