JSP: Formulaire JSP: comment gérer les valeurs par défaut des paramètres

<html>
  <head><title>Create Person</title></head>
  <body>
    <h1>Enter your details</h1>
    <form action="displayDetails.jsp" method="post">
      <table>
        <tr><td>First name:</td> <td><input type="text" name="firstName" /></td></tr>
        <tr><td>Last name:</td>  <td><input type="text" name="lastName"  /></td></tr>
        <tr><td>Age:</td>        <td><input type="text" name="age"       /></td></tr>
      </table>
      <input type="submit" value="Submit details" />
    </form>
  </body>
</html>
 
//displayDetails.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
 
<html>
  <head><title>Display details</title></head>
  <body>
    <h1>The details that you entered!</h1>
    <table>
      <tr><td>First name</td>
          <td><c:out value="${param.firstName}" /></td>
      </tr>
      <tr><td>Last name</td>
          <td><c:out value="${param.lastName}" /></td>
      </tr>
      <tr><td>Age</td>
          <td><c:out value="${param.age}" /></td>
      </tr>
      <%-- The following two values are not passed from the HTML form
           and are present to show the syntax for specifying default
           values --%>
      <tr><td>Partner's name</td>
          <td><c:out value="${param.partnerName}" default="Unknown name" /></td>
      </tr>
      <tr><td>Partner's age</td>
          <td><c:out value="${param.partnerAge}">
                Unknown age
              </c:out>
          </td>
      </tr>
    </table>
  </body>
</html>
 
 
           
       

Be the first to leave a comment. Don’t be shy.

Join the Discussion

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>