freemarker寫select組件（三）

標籤：freemarker   select   

freemarker寫select組件

1、宏定義

<#macro select id datas value="" key="" text="">     <select id="${id}" name="${id}">          <option>---請選擇---</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、封裝類

/** * @Title:User.java * @Package:com.you.freemarker.model * @Description: * @author:Youhaidong(遊海東) * @date:2014-6-26 下午10:28:01 * @version V1.0 */package com.you.freemarker.model;/** * 類功能說明 * 類修改者 修改日期 * 修改說明 * <p>Title:User.java</p> * <p>Description:遊海東個人開發</p> * <p>Copyright:Copyright(c)2013</p> * @author:遊海東 * @date:2014-6-26 下午10:28:01 * @version V1.0 */public class User {    /**     * 使用者號     */private int userNo;/** * 使用者姓名 */private String userName;/** * 使用者年齡 */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、頁面引入

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

4、Junit測試方法

/** *  * @Title:testSelect * @Description: * @param: * @return: void * @throws */@Testpublic void testSelect(){List<User> users = Arrays.asList(new User(1,"張三丰",25), new User(2,"李思思",22), new User(3,"趙武",23), new User(4,"劉雪",20), new User(5,"朱顧",21), new User(6,"趙武",23), new User(7,"吳語",24), new User(8,"血玉",21));root.put("users", users);studentPrint("address.ftl");studentFile("address.ftl","address.html");}

5、測試結果

（1）控制台列印

<select id="user" name="user">          <option>---請選擇---</option>                   <option value="1">張三丰</option>                   <option value="2">李思思</option>                   <option value="3">趙武</option>                   <option value="4">劉雪</option>                   <option value="5">朱顧</option>                   <option value="6">趙武</option>                   <option value="7">吳語</option>                   <option value="8">血玉</option>     </select>

（2）頁面顯示