velocity的简单使用

velocity的简单使用

文件目录结构，只有Demo1和hellovelocity.vm有用，其他的只是测试，可忽略

利用代码模板生成需要的代码文件
getPro与getVel区别在于配置的方式不一样
需要更改Template template = ve.getTemplate(“templates/hello.vm”,“UTF-8”);中的模板路径

package com.info33.velocity01.controller;

import org.apache.velocity.Template;
import org.apache.velocity.VelocityContext;
import org.apache.velocity.app.Velocity;
import org.apache.velocity.app.VelocityEngine;
import org.apache.velocity.runtime.RuntimeConstants;
import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;

import java.io.StringWriter;
import java.util.Properties;

public class Demo1 {
    public static void main(String[] args) {
        Demo1 d = new Demo1();
        d.getPro();
        d.getVel();
    }
    public void getPro(){
        Properties prop = new Properties();
        prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
        Velocity.init(prop);
        VelocityContext ctx = new VelocityContext();
        ctx.put("name","张三");
        ctx.put("age",18);
        Template template = Velocity.getTemplate("templates/hello.vm","UTF-8");
        StringWriter sw = new StringWriter();
        template.merge(ctx,sw);
        System.out.println(sw.toString());
    }
    public void getVel(){
        VelocityEngine ve = new VelocityEngine();
        ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
        ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
        ve.init();
        VelocityContext ctx = new VelocityContext();
        ctx.put("name","张三");
        ctx.put("age",18);
        Template template = ve.getTemplate("templates/hello.vm","UTF-8");
        StringWriter sw = new StringWriter();
        template.merge(ctx,sw);
        System.out.println(sw.toString());
    }
}

所需依赖

<dependency>
            <groupId>org.apache.velocity</groupId>
            <artifactId>velocity</artifactId>
            <version>1.7</version>
        </dependency>