采用字符串作为模板内容的 Velocity简单实例。

package com.test.velocity;

import java.io.StringWriter;
import java.util.Date;

import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;

public class HelloVelocity {

 /**
  * @param args
  */
 public static void main(String[] args) throws Exception {

  // 初始化并取得Velocity引擎
  VelocityEngine ve = new VelocityEngine();
  ve.init();

  // 取得velocity的模版内容, 模板内容来自字符传

  String content = "";
  content += "Welcome  $name  to Javayou.com! ";
  content += " today is  $date.";

  // 取得velocity的上下文context
  VelocityContext context = new VelocityContext();

  // 把数据填入上下文
  context.put("name", "javaboy2012");

  context.put("date", (new Date()).toString());

  // 输出流
  StringWriter writer = new StringWriter();

  // 转换输出

  ve.evaluate(context, writer, "", content); // 关键方法

  System.out.println(writer.toString());

 }

}