谷歌应用引擎上的速度框架

我正在尝试在谷歌应用引擎上使用速度框架。我用一个主方法编写了一个小程序,并尝试在本地运行它。我得到以下例外:

Exception in thread "main" org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.ServletLogChute with the current runtime configuration.
  at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:206)
  at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:255)
  at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:795)
  at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:250)
  at org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:107)
  at Main.main(Main.java:10)
Caused by: java.lang.UnsupportedOperationException: Could not retrieve ServletContext from application attributes
  at org.apache.velocity.runtime.log.ServletLogChute.init(ServletLogChute.java:73)
  at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:157)
  ... 5 more

这是我的计划:

import java.io.StringWriter;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;

public class Main {
 public static void main(String[] args) throws Exception{
        /*  first, get and initialize an engine  */
        VelocityEngine ve = new VelocityEngine();
        ve.init();
        /*  next, get the Template  */
        Template t = ve.getTemplate( "helloworld.vm" );
        /*  create a context and add data */
        VelocityContext context = new VelocityContext();
        context.put("name", "World");
        /* now render the template into a StringWriter */
        StringWriter writer = new StringWriter();
        t.merge( context, writer );
        /* show the World */
        System.out.println( writer.toString() );    
 }
}

同一个程序在一个普通的Eclipse项目上运行得非常好。有什么问题?