public class ClassBean {    private String name;    private String comment;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getComment() {        return comment;    }    public void setComment(String comment) {        this.comment = comment;    }}

private VelocityEngine init() {    VelocityEngine ve = new VelocityEngine();    ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");    ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());    ve.init();    return ve;}
 @Testpublic void velocity_test_2() {    VelocityEngine ve = init();    Template t = ve.getTemplate("template/ClassVelocity.vm");    VelocityContext ctx = new VelocityContext();    // 数据    List<ClassBean> classBeans = new ArrayList<>();    ClassBean classBean1 = new ClassBean();    classBean1.setName("username");    classBean1.setComment("用户名");    ClassBean classBean2 = new ClassBean();    classBean2.setName("password");    classBean2.setComment("密码");    ClassBean classBean3 = new ClassBean();    classBean3.setName("address");    classBean3.setComment("地址");    classBeans.add(classBean1);    classBeans.add(classBean2);    classBeans.add(classBean3);    ctx.put("className", "Person");    ctx.put("list", classBeans);    StringWriter sw = new StringWriter();    t.merge(ctx, sw);    System.out.println(sw.toString());}

##首字母大写#macro(initUpperCase $field)$field.toUpperCase().substring(0,1)$field.substring(1)###endpublic class $className {#foreach($bean in $list)    private String $bean.getName(); // $bean.getComment()#end#foreach($bean in $list)    #set($filed = $bean.getName())    public String get#initUpperCase($filed)() {        return $filed;    }    public void set#initUpperCase($filed)(String $filed){        this.$filed = $filed;    }#end}

public class Person {    private String username; // 用户名    private String password; // 密码    private String address; // 地址    public String getUsername() {        return username;    }    public void setUsername(String username){        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password){        this.password = password;    }    public String getAddress() {        return address;    }    public void setAddress(String address){        this.address = address;    }}