But what happens when the tag is invoked from an included page?

Sharpen your pencil

Look at the code below and figure out what prints when you bring up PageA.

Hint: look in the API for javax.servlet.jsp.SkipPageException.

Fill in what you’ll see in the browser:

image with no caption

PageA JSP that includes PageB

<html><body>
  This is page (A) that includes another page (B). <br>
  Doing the include now:<br>
  <jsp:include page="badTagInclude.jsp" />
  <br>Back in page A after the include...
</body></html>

PageB (the included file) JSP that invokes the bad tag

<%@ taglib prefix="myTags" uri="simpleTags" %>
This is page B that invokes the tag that throws SkipPageException.
Invoking the tag now:<br>
<myTags:simple6/>
<br>Still in page B after the tag invocation...

The tag handler doTag() method

public void doTag() throws JspException, IOException {
   getJspContext().getOut().print("Message from within doTag().<br>");
   getJspContext().getOut().print("About to throw a SkipPageException");
   throw new SkipPageException();
}
..................Content has been hidden....................

You can't read the all page of ebook, please click here login for view all page.
Reset