jsp自定义taglib实现long到date的展示

需求：

基于taglib实现long到yyyy-MM-dd HH:mm:ss的展示

实现：

1.定义转换类

public class UtilsTag {

	public static String date(Long time) throws Exception {
		Calendar c = Calendar.getInstance();
		c.setTimeInMillis(time);
		SimpleDateFormat dateformat = new SimpleDateFormat(
				"yyyy-MM-dd HH:mm:ss");
		String s = dateformat.format(c.getTime());
		return s;
	}

}

2.配置tld文件

<?xml version="1.0" encoding="GBK"?>  
<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>utils</short-name>  
    <function>  
        <name>date</name>  
        <function-class>com.linkrmb.UtilsTag</function-class>  
        <function-signature>  
            java.lang.String date(java.lang.Long)  
        </function-signature>  
    </function>  
</taglib>  

3.在web.xml中定义放置tld文件的位置

	<jsp-config>
		<taglib>
			<taglib-uri>/utils</taglib-uri>
			<taglib-location>/WEB-INF/tlds/utils.tld</taglib-location>
		</taglib>
	</jsp-config>

4.demo

<%@ taglib uri="/utils" prefix="utils"%>  
 ${utils:date(item.cdate)}

?

jsp自定义taglib实现long到date的展示

原文：http://snv.iteye.com/blog/2251314