自定义函数库
1 定义类和方法(方法必须是public static)
package com.bjsxt.struts;
public class MyFunctios{
public static String sayHello(String name){
return "Hello "+name;
}
}
2 编写自定义tld文件,并且将此文件放在WEB-INF或WEB-INF的任意子目录下
<?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">
<description>my functions library</description>
<display-name>my functions</display-name>
<tlib-version>1.0</tlib-version>
<short-name>my</short-name>
<uri>http://www.bjsxt.com/functions</uri>
<function>
<name>say</name>
<function-class>com.bjsxt.struts.MyFunctions</function-class>
<function-signature>java.lang.String sayHello(java.lang.String)</function-signature>
</function>
</taglib>
3 在web.xml中注册(建意,可以不注册)
<jsp-config>
<taglib>
<taglib-uri>http://www.bjsxt.com/functions</taglib-uri>
<taglib-location>/WEB-INF/my.tld</taglib-location>
</taglib>
</jsp-config>
4 在JSP中采用taglib指令引入自定义函数库
<%@ taglib prefix="my" uri="com.bjsxt.struts.MyFunctions"%>
5 调用
${my:say("jack")}
posted on 2009-11-29 22:30
junly 阅读(450)
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