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web基础----->模板引擎Velocity的使用(二)

  这里面是关于velocity的一些用法,比较基础的使用。愿你生命中有够多的云翳,来造成一个美丽的黄昏。

 

velocity生成javaBean

一、定义一个简单的bean类

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;
    }
}

 

二、生成javabean的velocity代码

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;
}
@Test
public 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()); }

 

三、ClassVelocity.vm的内容如下

##首字母大写
#macro(initUpperCase $field)
$field.toUpperCase().substring(0,1)$field.substring(1)##
#end

public 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
}

 

四、生成的代码如下:

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;
    }
}

 

友情链接

 

posted @ 2017-07-14 11:42  huhx  阅读(801)  评论(0编辑  收藏  举报