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());

}

}