<string>用户，您好：</string>
<h2>以下是 $date.format('yyyy-MM-dd',$model.deliverDate,$convert.toLocale("en_US")) 的发货清单，请核对！</h2>
<ul>
    #foreach ($item in $model.items)
        <li>$velocityCount . $item.productName / $item.productNum 件</li>
    #end
</ul>

import java.util.Date;
import java.util.List;


public class Order {

    private Date deliverDate;

    private List<OrderItem> items;

    public Date getDeliverDate() {
        return deliverDate;
    }

    public void setDeliverDate(Date deliverDate) {
        this.deliverDate = deliverDate;
    }

    public List<OrderItem> getItems() {
        return items;
    }

    public void setItems(List<OrderItem> items) {
        this.items = items;
    }
}

public class OrderItem {

    private String productName;
    private int productNum;

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }

    public int getProductNum() {
        return productNum;
    }

    public void setProductNum(int productNum) {
        this.productNum = productNum;
    }
}

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;
import org.apache.velocity.tools.generic.ConversionTool;
import org.apache.velocity.tools.generic.DateTool;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Date;


public class VelocityTest {

    public static void main(String[] args) {        

        VelocityEngine ve = new VelocityEngine();
        //定义vm资源加载的路径为classpath所在目录
        ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
        ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());

        ve.init();

        //加载模板
        Template t = ve.getTemplate("mail-template.vm", "utf-8");
        VelocityContext ctx = new VelocityContext();

        //加载velocity-tools
        ctx.put("date", new DateTool());
        ctx.put("convert", new ConversionTool());

        //放入要绑定的对象
        ctx.put("model", getOrder());

        StringWriter sw = new StringWriter();

        t.merge(ctx, sw);

        //输出
        System.out.println(sw.toString());
    }

    private static Order getOrder() {

        Order o = new Order();
        o.setDeliverDate(new Date());
        o.setItems(new ArrayList<OrderItem>());

        OrderItem item1 = new OrderItem();
        item1.setProductName("iphone");
        item1.setProductNum(1);

        OrderItem item2 = new OrderItem();
        item2.setProductName("mac pro");
        item2.setProductNum(2);

        o.getItems().add(item1);
        o.getItems().add(item2);

        return o;
    }
}

<string>用户 您好：</string>
<h2>以下是 2015-09-12 的发货清单，请核对！</h2>
<ul>
            <li>1 . iphone / 1 件</li>
            <li>2 . mac pro / 2 件</li>
    </ul>