eclipse添加velocity项目-创新互联

1.首先添加jar包，记得包含以下的主要两个类别

2.新建一个servlet类(继承自VelocityViewServlet)

package com.servlet;

import java.util.Properties;
import java.util.Vector;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.velocity.Template;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.context.Context;
import org.apache.velocity.tools.view.VelocityViewServlet;

public class VeloServlet extends VelocityViewServlet {
private static final long serialVersionUID = 1L;
private VelocityEngine velo;

public void init() throws ServletException {
        velo= new VelocityEngine();// velocity引擎对象        Properties prop = new Properties();// 设置vm模板的装载路径        String path = this.getServletContext().getRealPath("/");
        prop.setProperty(Velocity.FILE_RESOURCE_LOADER_PATH, path
+ "templates/");
try {
            velo.init(prop);// 初始化设置，下面用到getTemplate("*.vm")输出时;一定要调用velo对象去做,即velo.getTemplate("*.vm")        } catch (Exception e1) {
            e1.printStackTrace();
        }
    }

protected Template handleRequest(HttpServletRequest request,
            HttpServletResponse response, Context ctx) {
        String p1= "Charles";
        String p2= "Michael";
        Vector personList= new Vector();
        personList.addElement(p1);
        personList.addElement(p2);
        ctx.put("theList", personList);
        ctx.put("myname", "cuiyf");// 将模板数据 list放置到上下文环境context中        Template template = velo.getTemplate("index.vm");
return template;
    }
}

3.在web.xml下面配置如下:

TestVelocity   velocity  org.apache.velocity.tools.view.VelocityViewServlet  velocity  *.vm  hello  com.servlet.VeloServlet  hello  /hello  /hello

4.在WebContent下创建文件夹templates，在里面创建.vm文件 index.vm(跟html比较像)

        
Hello My First Velocity
     name list
                            $myname
                            #foreach ($name in $theList)
$name
                            #end
   

项目完毕，把项目部署到tomcat ,访问即可 http://localhost:8082/TestVelocity/hello

注意以下问题: 设置.vm文件的路径 ，可以在java代码里面设置，也可以在配置文件设置 ， 不然会找不到