Struts的updownselect标签

女爷i 2021-07-24 23:12 401阅读 0赞

**一 视图**

<%@ page contentType="text/html; charset=GBK" language="java" errorPage="" %>
    <%@taglib prefix="s" uri="/struts-tags"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>使用s:updownselect生成可上下移动选项的下拉选择框</title>
        <s:head/>
    </head>
    <body>
    <h3>使用s:updownselect生成可上下移动选项的下拉选择框</h3>
    <s:form>
    
    <s:updownselect name="a" label="请选择您喜欢的图书"
        labelposition="top"
        moveUpLabel="向上移动"
        list="{'疯狂Java讲义'
        , '轻量级Java EE企业应用实战'
        , '疯狂iOS讲义'}"/>
    
    <s:updownselect name="b" label="请选择您想选择出版日期"
        labelposition="top"
        moveDownLabel="向下移动"
        list="#{'疯狂Java讲义':'2008年9月'
        ,'轻量级Java EE企业应用实战':'2008月12月'
        ,'疯狂iOS讲义':'2014年1月'}"
        listKey="key"
        emptyOption="true"
        listValue="value"/>
    <s:bean name="org.crazyit.app.service.BookService" id="bs"/>
    
    <s:updownselect name="c" label="请选择您喜欢的图书的作者"
        labelposition="top"    selectAllLabel="全部选择" multiple="true"
        list="#bs.books"
        listKey="author"
        listValue="name"/>
    </s:form>
    </body>
    </html>

**二 业务类**

package org.crazyit.app.service;
    
    import org.crazyit.app.dto.*;
    
    public class BookService
    {
        public Book[] getBooks()
        {
            return new Book[]
            {
                new Book("疯狂Java讲义","李刚"),
                new Book("轻量级Java EE企业应用实战","李刚"),
                new Book("疯狂iOS讲义","李刚"),
                new Book("疯狂Ajax讲义","李刚")
            };
        }
    }

**三 实体类**

package org.crazyit.app.dto;
    
    
    public class Book
    {
        private String name;
        private String author;
    
        // 无参数的构造器
        public Book()
        {
        }
        // 初始化全部成员变量的构造器
        public Book(String name , String author)
        {
            this.name = name;
            this.author = author;
        }
    
        // name的setter和getter方法
        public void setName(String name)
        {
            this.name = name;
        }
        public String getName()
        {
            return this.name;
        }
    
        // author的setter和getter方法
        public void setAuthor(String author)
        {
            this.author = author;
        }
        public String getAuthor()
        {
            return this.author;
        }
    
    }

**四 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/afa96c4f4c9c4422bc419fa33c075e2e.png