java锟斤拷锟斤拷 RepeatSimpleTag.java://锟脚碉拷WEB-INF/classes/jsp2/examples/simpletag
锟斤拷锟斤拷
package jsp2.examples.simpletag;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;
import java.util.HashMap;
import java.io.IOException;
public class RepeatSimpleTag extends SimpleTagSupport
{
private int num;
public void doTag() throws JspException, IOException {
for (int i=0; i<num; i++) {
getJspContext().setAttribute("count", String.valueOf(
i + 1 ) );
getJspBody().invoke(null);
}
}
public void setNum(int num) { //锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絥um锟斤拷值,锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟絫ld锟侥硷拷锟叫碉拷锟斤拷
this.num = num;
}
}
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
repeatTaglib.tld (锟斤拷志锟斤拷锟斤拷锟斤拷锟侥硷拷,锟斤拷锟斤拷WEB-INF锟斤拷锟斤拷锟絡sp2锟斤拷锟芥）
<?xml version="1.0" encoding="UTF-8"
?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
web-jsptaglibrary_2_0.xsd" version="2.0">
<description>A tag library exercising SimpleTag handlers.</description>
<tlib-version>1.0</tlib-version>
<short-name>SimpleTagLibrary</short-name>
<uri>/SimpleTagLibrary</uri>
<tag> <!--锟斤拷锟斤拷锟角匡拷始锟斤拷志锟斤拷锟斤拷-->
<name>repeat</name> <!--锟斤拷锟斤拷锟借定锟侥憋拷志锟斤拷锟斤拷,锟斤拷jsp锟侥硷拷锟斤拷锟斤拷-->
<tag-class>jsp2.examples.simpletag.RepeatSimpleTag</tag-class>
<!--锟斤拷应锟斤拷java锟侥硷拷路锟斤拷-->
<body-content>scriptless</body-content>
<variable> <!--锟斤拷锟斤拷要锟斤拷取锟侥憋拷锟斤拷锟斤拷锟斤拷值-->
<description>Current invocation count (1 to num)</description>
<name-given>count</name-given>
</variable>
<attribute> <!--锟斤拷锟斤拷java锟斤拷锟叫憋拷锟斤拷,锟斤拷锟斤拷java锟侥硷拷锟叫碉拷setNum()锟斤拷锟斤拷-->
<name>num</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag> <!--//锟斤拷锟斤拷锟角斤拷锟斤拷锟斤拷志锟斤拷锟斤拷-->
</taglib>
锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
repeat.jsp
<%@ taglib prefix="repeattag" uri="/WEB-INF/jsp2/repeatTaglib.tld"
%>
<html>
<body>
<br>
<repeattag:repeat num="5">//锟斤拷锟角匡拷锟侥硷拷锟叫碉拷repeat锟斤拷歉锟街�
锟斤拷梅锟斤拷锟街�:${count} of 5<br>//锟矫碉拷锟斤拷锟截斤拷锟斤拷锟絡ava锟斤拷锟斤拷锟斤拷实锟斤拷锟斤拷循锟斤拷锟斤拷
</repeattag:repeat>
</body>
</html>
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