HelloWorldServlet.java

/* 
 * Copyright (c) 2008, Edward Yakop. All Rights Reserved.
 * Copyright (c) 2011, Paul Merlin. All Rights Reserved.
 *
 * 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.qi4j.library.http;

import java.io.IOException;
import java.io.PrintWriter;
import java.security.cert.X509Certificate;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class HelloWorldServlet
        extends HttpServlet
{

    private static final long serialVersionUID = 1L;

    @Override
    protected final void doGet( HttpServletRequest req, HttpServletResponse resp )
            throws ServletException, IOException
    {
        X509Certificate[] certs = ( X509Certificate[] ) req.getAttribute( "javax.servlet.request.X509Certificate" );
        PrintWriter writer = resp.getWriter();
        if ( certs != null && certs.length > 0 ) {
            writer.append( "Hello Mutual World" );
        } else {
            writer.append( "Hello World" );
        }
    }

}