Velocity Macro with Parameters

This Example shows you how to use macro with parameters in velocity template.

Example given below show you, how to display date and time velocity. The method used in this example are described below:-

1:- Initialize velocity run time engine through method init().
2:- Create object of VelocityContext Class.
3:- Create Template class object, Template class object is used for controlling template methods and properties.

template.merge(context, writer): Merge method of the Template class is used here for merging the VelocityContext class object to produce the output. Template class object is used for controlling template methods and properties.

#add($list): This method is used to call the add function created above.

MacroWithParameter.java

import java.io.*;



import org.apache.velocity.*;

import org.apache.velocity.app.Velocity;

import org.apache.velocity.tools.generic.RenderTool;



public class UseMacro {



  public static void main(String[] args) throws Exception {

    Velocity.init();

    Template template = Velocity.getTemplate("./src/MacroWithParameter.vm");



    VelocityContext context = new VelocityContext();



    Writer writer = new StringWriter();

    template.merge(context, writer);



    System.out.println(writer);

  }

}

MacroWithParameter.vm

#macro(add $list)

#set($total=0)

#foreach($item in $list)

$item

#set($total =$total+$item)

#end

--------------

total = $total

#end



#set ($list = [1, 2, 2])

#add($list)

Output:

1

2

2

--------------

total = 
5

Download code

Leave your comment:
Name:
Email:
URL:
Title:
Comments:
Enter Code:
	Note: Emails will not be visible or used in any way, and are not required. Please keep comments relevant. Any content deemed inappropriate or offensive may be edited and/or deleted. No HTML code is allowed. Line breaks will be converted automatically. URLs will be auto-linked. Please use BBCode to format your text.