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JavaServer Pages, 3rd Edition
book

JavaServer Pages, 3rd Edition

by Hans Bergsten
December 2003
Intermediate to advanced
764 pages
24h 58m
English
O'Reilly Media, Inc.
Content preview from JavaServer Pages, 3rd Edition

Reading Request Parameter Values

The HTML specification defines a set of elements for presenting a form with fields in which the user can enter text or select among predefined choices. I’m sure you have encountered these countless times—to tell a vendor about yourself when downloading demo software, to specify what you’re looking for on a search engine site, or to select the toppings when you order a pizza online. But you may not be familiar with what’s going on behind the scene when you fill out the form and click Submit. Example 8-1 shows an HTML page that contains the most commonly used HTML form elements.

Example 8-1. HTML form elements
<html>
  <head>
    <title>User Info Entry Form</title>
  </head>
  <body bgcolor="white">
    <form action="process.jsp" method="post">
      <table>
        <tr>
          <td>Name:</td>
          <td>
            <input type="text" name="userName">
          </td>
        </tr>
        <tr>
          <td>Birth Date:</td>
          <td>
            <input type="text" name="birthDate">
          </td>
          <td>(Use format yyyy-mm-dd)</td>
        </tr>
        <tr>
          <td>Email Address:</td>
          <td>
            <input type="text" name="emailAddr">
          </td>
          <td>(Use format name@company.com)</td>
        </tr>
        <tr>
          <td>Gender:</td>
          <td>
            <input type="radio" name="gender" value="m" checked>Male<br>
            <input type="radio" name="gender" value="f">Female
          </td>
        </tr>
        <tr>
          <td>Lucky number:</td>
          <td>
            <input type="text" name="luckyNumber">
          </td>
          <td>(A number between 1 and 100)</td>
        </tr>
        <tr>
          <td>Favorite Foods:</td>
          <td>
            <input type="checkbox" name="food" value="z">Pizza<br> <input type="checkbox" name="food" value="p">Pasta<br> ...
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Publisher Resources

ISBN: 0596005636Errata Page