Code 2 - Display Form - UploadForm.jspx

JSP Tutorials - Herong's Tutorial Examples - Version 4.03, by Dr. Herong Yang

JSP Tutorials - Herong's Tutorial Examples

∟Code 2 - Display Form - UploadForm.jspx

This section provides a tutorial example of a JSP page, UploadForm.jspx, presenting the file upload form page based the options selected by the user previously.

As Part 2 of the file upload test, here is my UploadForm.jspx page, that presents the file upload form page based the options selected by the user on the UploadInit.html page:

<?xml version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1">
<!-- UploadForm.jspx
 - Copyright (c) 2012, HerongYang.com, All Rights Reserved.
-->
<jsp:directive.page contentType="text/html"/>
<jsp:declaration><![CDATA[
   private String getItem(String queryString, String key) {
      String value = null;
      if (queryString!=null) {
         int i = queryString.indexOf(key);
         if (i>-1) {
            i = i + key.length();
            int j = queryString.indexOf("&",i);
            if (j>-1) {
               value = queryString.substring(i,j);
            } else {
               value = queryString.substring(i);
            }
            if (value.startsWith("=")) {
               value = value.replaceFirst("=","");
            }
         }
      }
      return value;
   }
]]></jsp:scriptlet>
<jsp:scriptlet><![CDATA[
   String queryString = request.getQueryString();
   String action = getItem(queryString,"action");
   String method = getItem(queryString,"method");
   String enctype = getItem(queryString,"enctype");
   if (enctype.equals("x-www-form-urlencoded"))
      enctype = "application/x-www-form-urlencoded";
   if (enctype.equals("form-data"))
      enctype = "multipart/form-data";
   out.println("<html><body>");
   out.println("<b>File Upload Form</b>:<br/>");
   out.println("<form action="+action+" method="+method
      +" enctype="+enctype+">");
   out.println("Your email:");
   out.println("<input type=text name=email size=20><br/>");
   out.println("Your comments:");
   out.println("<textarea name=comment cols=20 rows=3></textarea>"
      +"<br/>");
   out.println("File 1:");
   out.println("<input type=file name=file1 size=20><br/>");
   out.println("File 2:");
   out.println("<input type=file name=file2 size=20><br/>");
   out.println("<input type=submit name=submit value=Submit><br/>");
   out.println("</form>");
   out.println("</body></html>");
]]></jsp:scriptlet>
</jsp:root>

Last update: 2012.

Table of Contents

About This Book

JSP (JavaServer Pages) Overview

Tomcat 7 Installation on Windows Systems

JSP Scripting Elements

Java Servlet Introduction

JSP Implicit Objects

Syntax of JSP Pages and JSP Documents

JSP Application Session

Managing Cookies in JSP Pages

JavaBean Objects and "useBean" Action Elements