Creating a JSP-Based Application

This section shows you how to create a simple JSP-based WebObjects application. In it you learn how to use the <wo:component> tag in a JSP page.

Launch Project Builder and create a WebObjects Application project called JSP_Example.
In the Enable J2EE Integration pane of the Project Builder Assistant, select Deploy in a JSP/Servlet Container.
In Project Builder, create a component called Hello (make sure you assign it to the Application Server target). Edit the component using WebObjects Builder so that it looks like Figure 3-1.
Figure 3-1 The Hello component in WebObjects Builder
Set the servlet application directory.
1. In Project Builder click Targets, then click the JSP_Example target the Targets list.
2. Click Build Settings, then scroll down until you see the Build Settings list.
3. Locate the SERVLET_WEBAPPS_DIR build setting and enter the path of your servlet container's application directory, as shown in Figure 3-2.
  Figure 3-2 Telling Project Builder where to put the WAR file

Using Finder, navigate to the Servlet Resources folder, located in the JSP_Example folder, and create a folder called jsp.

Using a text editor, create a file with the following contents:

<%-- Welcome.jsp --%>

<%@ taglib uri="/WOtaglib" prefix="wo" %>

<HTML>

<HEAD>
    <TITLE>Welcome to JSP in WebObjects</TITLE>
</HEAD>

<BODY>
    <wo:component className="Hello">
    </wo:component>
</BODY>

</HTML>

Save the file as Welcome.jsp in the jsp directory.
Build the JSP_Example project (if necessary, restart your servlet container).

You should now be able to connect to your application. In Tomcat, you use the following URL:

http://localhost:8080/JSP_Example/jsp/Welcome.jsp

A page similar to the one in Figure 3-3 should appear in your browser. (Otherwise, consult your servlet container's documentation to make sure that it's configured properly.)

Figure 3-3 The output of Welcome.jsp