NewMinimumTag.java
package customaction;
import java.io.IOException;
import javax.servlet.jsp.JspContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;
public class NewMinimumTag extends SimpleTagSupport {
private String var;
private int num1, num2;
public void setVar(String var) {
this.var = var;
}
public void setNum1(int num1) {
this.num1 = num1;
}
public void setNum2(int num2) {
this.num2 = num2;
}
@Override
public void doTag() throws JspException, IOException {
// TODO Auto-generated method stub
JspContext context = getJspContext();
if (num1<num2)
context.setAttribute(var, num1);
else
context.setAttribute(var, num2);
return;
}
}
customaction.tld
<?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 http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
version="2.0">
<tlib-version>1.0</tlib-version>
<short-name>tool</short-name>
<tag>
<name>newMin</name>
<tag-class>customaction.NewMinimumTag</tag-class>
<body-content>empty</body-content>
<attribute>
<name>num1</name>
<type>java.lang.Integer</type>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>num2</name>
<type>java.lang.Integer</type>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>var</name>
<type>java.lang.String</type>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>
<variable>
<name-from-attribute>var</name-from-attribute>
<variable-class>java.lang.Integer</variable-class>
<scope>AT_END</scope>
</variable>
</tag>
</taglib>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib prefix="tool" uri="/taglibs/customaction.tld" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<tool:newMin var="min" num1="10" num2="20" />
최소값 : ${min}
</body>
</html>
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