tomcat7与之前的版本有一些区别
直接上代码：
package tag;
import java.io.IOException;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;
/**
* SimpleTag handler that prints "Hello, world!"
*/
public class ShowTag extends SimpleTagSupport {
@Override
public void doTag() throws JspException, IOException {
getJspContext().getOut().write( "it time" );
}
}
my.tld文件，放在WEB-INF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"> <tlib-version>1.0</tlib-version> <short-name>show</short-name> <uri>/ownTag</uri> <tag> <description>Outputs Hello, World</description> <name>showTime</name> <tag-class>tag.ShowTag</tag-class> <body-content>empty</body-content> </tag> </taglib>
jsp代码：
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <%@ taglib prefix="my" uri="/WEB-INF/my.tld"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> This is my JSP page. <br> <my:showTime/> </body> </html>