freemarker写select组件（三）

freemarker写select组件

​1、宏定义​

<#macro select id datas value="" key="" text="">
     <select id="${id}" name="${id}">
          <option>---请选择---</option>
          <#list datas as data>
              <#if key!="">
                  <#if value == data[key]?string>
                  <option value="${data[key]}" selected>${data[text]}</option>
                  <#else>
                   <option value="${data[key]}">${data[text]}</option>
                 </#if>
              <#else>
                  <#if value == data>
                  <option value="${data}" selected>${data}</option>
                 <#else>
                 <option value="${data}">${data}</option>
              </#if>
             </#if> 
          </#list>
     </select>
</#macro>

2、封装类

/**
 * @Title:User.java
 * @Package:com.you.freemarker.model
 * @Description:
 * @author:Youhaidong(游海东)
 * @date:2014-6-26 下午10:28:01
 * @version V1.0
 */
package com.you.freemarker.model;

/**
 * 类功能说明
 * 类改动者 改动日期
 * 改动说明
 * <p>Title:User.java</p>
 * <p>Description:游海东个人开发</p>
 * <p>Copyright:Copyright(c)2013</p>
 * @author:游海东
 * @date:2014-6-26 下午10:28:01
 * @version V1.0
 */
public class User 
{
    /**
     * 用户号
     */
    private int userNo;

    /**
     * 用户姓名
     */
    private String userName;

    /**
     * 用户年龄
     */
    private int userAge;

    /**
     * @return the userNo
     */
    public int getUserNo() {
        return userNo;
    }

    /**
     * @param userNo the userNo to set
     */
    public void setUserNo(int userNo) {
        this.userNo = userNo;
    }

    /**
     * @return the userName
     */
    public String getUserName() {
        return userName;
    }

    /**
     * @param userName the userName to set
     */
    public void setUserName(String userName) {
        this.userName = userName;
    }

    /**
     * @return the userAge
     */
    public int getUserAge() {
        return userAge;
    }

    /**
     * @param userAge the userAge to set
     */
    public void setUserAge(int userAge) {
        this.userAge = userAge;
    }

    /**
     * <p>Title:</p>
     * <p>Description:</p>
     * @param userNo
     * @param userName
     * @param userAge
     */
    public User(int userNo, String userName, int userAge) {
        super();
        this.userNo = userNo;
        this.userName = userName;
        this.userAge = userAge;
    }

    /**
     * <p>Title:</p>
     * <p>Description:</p>
     */
    public User() {
        super();
    }

}

3、页面引入

<@items.select id="user" datas=users key="userNo" text="userName"/>

4、Junit測试方法

/**
   * 
   * @Title:testSelect
   * @Description:
   * @param:
   * @return: void
   * @throws
   */
  @Test
  public void testSelect()
  {
    List<User> users = Arrays.asList(new User(1,"张三丰",25),
                     new User(2,"李思思",22),
                     new User(3,"赵武",23),
                     new User(4,"刘雪",20),
                     new User(5,"朱顾",21),
                     new User(6,"赵武",23),
                     new User(7,"吴语",24),
                     new User(8,"血玉",21));
    root.put("users", users);
    studentPrint("address.ftl");
    studentFile("address.ftl","address.html");
  }

5、測试结果

（1）控制台打印

<select id="user" name="user">
          <option>---请选择---</option>
                   <option value="1">张三丰</option>
                   <option value="2">李思思</option>
                   <option value="3">赵武</option>
                   <option value="4">刘雪</option>
                   <option value="5">朱顾</option>
                   <option value="6">赵武</option>
                   <option value="7">吴语</option>
                   <option value="8">血玉</option>
     </select>

（2）页面显示