Velocity 同时初始化两个 Engine 实例，velocityengine,import java.

Velocity 同时初始化两个 Engine 实例，velocityengine,import java.

import java.io.StringWriter;import java.io.Writer;import java.util.Properties;import org.apache.velocity.Template;import org.apache.velocity.VelocityContext;import org.apache.velocity.app.VelocityEngine;public class VelocityEngineTest {  private static final String TEMPLATE_NAME = "VelocityEngineTest.vm";  public static void main(String[] args) throws Exception {    Properties p1 = new Properties();    p1.put("resource.loader", "file");    p1.put("file.resource.loader.class",        "org.apache.velocity.runtime.resource.loader.FileResourceLoader");    p1.put("file.resource.loader.path", "./src/ve1");    Properties p2 = new Properties();    p2.put("resource.loader", "file");    p2.put("file.resource.loader.class",        "org.apache.velocity.runtime.resource.loader.FileResourceLoader");    p2.put("file.resource.loader.path", "./src/ve2");    //now create the engines    VelocityEngine ve1 = new VelocityEngine();    ve1.init(p1);    VelocityEngine ve2 = new VelocityEngine();    ve2.init(p2);    // now get the output for each engine    writeTemplateOutput(ve1);    writeTemplateOutput(ve2);  }  public static void writeTemplateOutput(VelocityEngine ve) throws Exception {    Template t = ve.getTemplate(TEMPLATE_NAME);    Writer writer = new StringWriter();    t.merge(new VelocityContext(), writer);    System.out.println(writer.toString());  }}//该片段来自于http://byrx.net