SimpleFormServlet.java /* * @(#)SimpleFormServlet.java * * Copyright (c) 1998-2000 Servertec. All Rights Reserved. * * This software is the proprietary and confidential property of Servertec. * Use only in accordance with the terms of the license agreement. * * SERVERTEC MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY * OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, OR NON-INFRINGEMENT. SERVERTEC SHALL NOT BE LIABLE FOR ANY * DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. * * THIS NOTICE MUST NOT BE ALTERED NOR REMOVED. * * CopyrightVersion 1.0 */ import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.ServletOutputStream; import javax.servlet.ServletException; import java.io.IOException; public class SimpleFormServlet extends HttpServlet { public void service(HttpServletRequest _request, HttpServletResponse _response) throws ServletException, IOException { _response.setContentType("text/html"); ServletOutputStream out = _response.getOutputStream(); out.println("<html>"); out.println("<head><title>Simple Entry Form Servlet</title></head>"); out.println("<body>"); String name = _request.getParameter("name"); if(name == null) { String oldvalue = _request.getParameter("oldvalue"); if(oldvalue == null) { oldvalue = ""; } out.println("Please enter your name"); out.println("<br>"); out.println("<form action=\"./simpleform.html\" method=\"get\">"); out.println("<input type=\"text\" name=\"name\" value=\"" + oldvalue + "\">"); out.println("<br>"); out.println("<input type=\"submit\" value=\"Submit\">"); out.println("<input type=\"reset\" value=\"Reset\">"); out.println("</form>"); } else if(name.length() == 0) { out.println("<h1>Please enter your name</h1>"); out.println("<br>"); out.println("[ <a href=\"./simpleform.html?oldvalue=" + name + "\">try again</a> ]"); } else { out.println("<h1>Hello " + name + "</h1>"); out.println("<br>"); out.println("[ <a href=\"./simpleform.html?oldvalue=" + name + "\">try again</a> ]"); } out.println("</body>"); out.println("</html>"); out.close(); } public String getServletInfo() { return "SimpleFormServlet"; } }