ansaurus

Question

Answer 1

+2 A:

You aren't using JSF in any way - this is a plain HTML page that invokes a JSP (which doesn't contain any JSF tags).

To reformulate the login page as a JSF JSP, you might write it something like this:

<?xml version="1.0" encoding="UTF-8" ?><jsp:root
  xmlns:jsp="http://java.sun.com/JSP/Page" version="2.0"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:f="http://java.sun.com/jsf/core"&gt;&lt;jsp:directive.page
    language="java"
    contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" /><jsp:text><![CDATA[<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; ]]>
    </jsp:text>
  <html xmlns="http://www.w3.org/1999/xhtml"&gt;
  <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  </head>
  <body>
  <f:view>
    <h:form>
      user: <h:inputText value="#{idhandler.username}" /><br />
      pw: <h:inputText value="#{idhandler.password}" /><br />
      <h:commandButton value="login" action="#{idhandler.validateUser}" />
    </h:form>
  </f:view>
  </body>
  </html>
</jsp:root>

This defines a JSF view with a form control that contains two text input controls and a button. The inputs and button are bound to a managed bean. The managed bean might look like this:

public class LoginManager {
  private String username;
  private String password;

  public String getUsername() { return username; }
  public void setUsername(String username) { this.username = username; }

  public String getPassword() { return password; }
  public void setPassword(String password) { this.password = password; }

  public String validateUser() {
    // TODO: check login details
    boolean authenticated = true;
    return authenticated ? "goProcessUserInfo" : "errorPage";
  }
}

The return value of the validateUser method is used for matching the <from-outcome> of the navigation case. The managed bean would be defined in your faces-config.xml:

  <managed-bean>
    <managed-bean-name>idhandler</managed-bean-name>
    <managed-bean-class>dsassignment1java.LoginManager</managed-bean-class>
    <managed-bean-scope>session</managed-bean-scope>
  </managed-bean>

FYI: when writing JSF applications, you minimise the use of any standard actions (jsp:... tags in the http://java.sun.com/JSP/Page namespace), usually avoid JSTL tags (<c:... tags in the http://java.sun.com/jsp/jstl/... namespaces) and never use scriptlets (<% ... %> view-embedded code).

See the JavaServer Faces section of the JEE5 tutorial for more.

McDowell 2009-10-12 14:36:42

ansaurus

tags:

views:

answers:

JSF/JSP mixing problem

related questions