使用JSTL开发jsp自定义标签开发

package  ttt;
import  javax.servlet.jsp.JspTagException;
import  javax.servlet.jsp.jstl.core.ConditionalTagSupport;


public   class  ConditionTest  extends  ConditionalTagSupport  ... {

     protected   boolean  condition()  throws  JspTagException  ... {
        
         return   true ;
    }
   
}

<? xml version="1.0" encoding="ISO-8859-1"  ?>
<! DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd" >
< taglib >
< tlib-version > 1.0 </ tlib-version >
< jsp-version > 1.2 </ jsp-version >

< short-name > book </ short-name >
< uri > http://jstlbook.com/tld/weekday.tld </ uri >
< tag >
< name > if </ name >
< tag-class > ttt.ConditionTest </ tag-class >
</ tag >
</ taglib >

<% ... @ taglib prefix = " cc "  uri = " http://jstlbook.com/tld/weekday.tld "   %>


< html >
< head >

< title > Currency Formatting </ title >
</ head >
< body >
< cc:if >
  this is tld test
</ cc:if >
</ body >
</ html >