TransformServlet.java Source code

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Here is the source code for TransformServlet.java

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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: TransformServlet.java 470245 2006-11-02 06:34:33Z minchau $
 */

import java.io.IOException;
import java.io.PrintWriter;

import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author Morten Jorgensen
 */
public class TransformServlet extends HttpServlet {

    // Error message used when the XSL transformation bean cannot be created
    private final static String createErrorMsg = "<h1>XSL transformation bean error</h1>"
            + "<p>An XSL transformation bean could not be created.</p>";

    // Transformer - "more than meets the eye".
    private TransformHome transformer;

    /**
     * Servlet initializer - look up the bean's home interface
     */
    public void init(ServletConfig config) throws ServletException {
        try {
            InitialContext context = new InitialContext();
            Object transformRef = context.lookup("transform");
            transformer = (TransformHome) PortableRemoteObject.narrow(transformRef, TransformHome.class);
        } catch (Exception NamingException) {
            NamingException.printStackTrace();
        }
    }

    /**
     * Handles "GET" HTTP requests - ie. runs the actual transformation
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String document = request.getParameter("document");
        String translet = request.getParameter("translet");

        response.setContentType("text/html");

        PrintWriter out = response.getWriter();
        try {
            // Get the insult from the bean
            TransformRemote xslt = transformer.create();
            String result = xslt.transform(document, translet);
            out.println(result);
        } catch (Exception CreateException) {
            out.println(createErrorMsg);
        }
        out.close();
    }

    public void destroy() {
        System.out.println("Destroy");
    }
}