Repeating a Tag Multiple Times

• By using the return type of the doAfterBody method in the tag handler, you can repeat a body multiple times.
• return(SKIP_BODY); will only write it once.
• return(EVAL_BODY_TAG); will write it again.  You can do this recursively.
• Let's make an application to register for health insurance.  The user will first enter the number of dependents.  Then, a new page will generate with a form, with one row of entry fields per dependent.
• The files:
•  Registration.html The first form the user sees, where he enters the number of dependents.
•  Register.jsp The jsp that generates the form for entry of dependent info.
•  Repeat.java The tag handler class, takes the number of repetitions as input and generates the body of Register.jsp.
•  utils.tld The tag library defintion file.
• And, of course, this entry into web.xml:
    <taglib>
        <taglib-uri>/utils</taglib-uri>
        <taglib-location>utils.tld</taglib-location>
    </taglib>
 

Created by:  Brandan Jones December 17, 2001