Create a java file with following contents:
package com.pkm.maven.tag; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.tagext.SimpleTagSupport; public class NewDateTag extends SimpleTagSupport { private String prefix; public void setPrefix(String prefix) { this.prefix = prefix; } @Override public void doTag() throws JspException, IOException { final JspWriter writer = getJspContext().getOut(); String pattern = "dd/MM/yyyy H:m:s"; SimpleDateFormat format = new SimpleDateFormat(pattern); if (prefix != null) { writer.print(prefix + " "); } writer.print(format.format(new Date())); } }
Create the tag library descriptor (TLD) under WEB-INF folder suppose named: "UiTabLib.tld":
<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"> <tlib-version>1.0</tlib-version> <short-name>Ui Tab Library</short-name> <uri>UiTabLib</uri> <tag> <name>newDate</name> <tag-class>com.pkm.maven.tag.NewDateTag</tag-class> <body-content>empty</body-content> <attribute> <name>prefix</name> <type>java.lang.String</type> <required>false</required> <rtexprvalue>true</rtexprvalue> </attribute> </tag> </taglib>
Reference & use the tag library:
<%@taglib prefix="UiTabLib" uri="UiTabLib" %> <p>New Date Tag Lib Output: <UiTabLib:newDate/></p> <p>New Date Tag Lib Output: <UiTabLib:newDate prefix="Prefix"/></p>
Output would be like this:
New Date Tag Lib Output: 14/11/2014 18:25:12
New Date Tag Lib Output: Prefix 14/11/2014 18:25:12
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