appserver/tests/appserv-tests/devtests/web/servletRequestParamsPreserveOrder/servlet/TestServlet.java

/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

import java.io.*;
import java.util.*;
import jakarta.servlet.*;
import jakarta.servlet.http.*;

public class TestServlet extends HttpServlet {

    public void service(ServletRequest req, ServletResponse res)
            throws IOException, ServletException {

        StringBuffer sb = new StringBuffer();

        Enumeration e = req.getParameterNames();
        while (e.hasMoreElements()) {
            String name = (String) e.nextElement();
            String values = req.getParameter(name);
            sb.append(name + "=" + values);
        }

        PrintWriter out = res.getWriter();
        out.print(sb.toString());
    }
}