Commons BeanUtils 中对Map的操作
<h1>
<span class="link_title"><a href="/linminqin/article/details/6697303">
Commons BeanUtils 中对Map的操作
</a></span>
</h1>
<div class="article_manage clearfix">
<div class="article_l">
<span class="link_categories">
标签:
<a href="http://www.csdn.net/tag/bean" target="_blank" onclick="_gaq.push(['_trackEvent','function', 'onclick', 'blog_articles_tag']);">bean</a><a href="http://www.csdn.net/tag/integer" target="_blank" onclick="_gaq.push(['_trackEvent','function', 'onclick', 'blog_articles_tag']);">integer</a>
</span>
</div>
<div class="article_r">
<span class="link_postdate">2011-08-18 10:32</span>
<span class="link_view" title="阅读次数">3966人阅读</span>
<span class="link_comments" title="评论次数"> <a href="#comments" onclick="_gaq.push(['_trackEvent','function', 'onclick', 'blog_articles_pinglun'])">评论</a>(0)</span>
<span class="link_collect tracking-ad" data-mod="popu_171"> <a href="javascript:void(0);" onclick="javascript:collectArticle('Commons+BeanUtils+%e4%b8%ad%e5%af%b9Map%e7%9a%84%e6%93%8d%e4%bd%9c','6697303');return false;" title="收藏" target="_blank">收藏</a></span>
<span class="link_report"> <a href="#report" onclick="javascript:report(6697303,2);return false;" title="举报">举报</a></span>
</div>
</div>
<div class="embody" style="display:none" id="embody">
<span class="embody_t">本文章已收录于:</span>
<div class="embody_c" id="lib" value="{"err":0,"msg":"ok","data":[]}"></div>
</div>
<style type="text/css">
.embody{
padding:10px 10px 10px;
margin:0 -20px;
border-bottom:solid 1px #ededed;
}
.embody_b{
margin:0 ;
padding:10px 0;
}
.embody .embody_t,.embody .embody_c{
display: inline-block;
margin-right:10px;
}
.embody_t{
font-size: 12px;
color:#999;
}
.embody_c{
font-size: 12px;
}
.embody_c img,.embody_c em{
display: inline-block;
vertical-align: middle;
}
.embody_c img{
width:30px;
height:30px;
}
.embody_c em{
margin: 0 20px 0 10px;
color:#333;
font-style: normal;
}
</style>
<script type="text/javascript">
$(function () {
try
{
var lib = eval("("+$("#lib").attr("value")+")");
var html = "";
if (lib.err == 0) {
$.each(lib.data, function (i) {
var obj = lib.data[i];
//html += '<img src="' + obj.logo + '"/>' + obj.name + " ";
html += ' <a href="' + obj.url + '" target="_blank">';
html += ' <img src="' + obj.logo + '">';
html += ' <em><b>' + obj.name + '</b></em>';
html += ' </a>';
});
if (html != "") {
setTimeout(function () {
$("#lib").html(html);
$("#embody").show();
}, 100);
}
}
} catch (err)
{ }
});
</script>
<div class="category clearfix">
<div class="category_l">
<img src="http://static.blog.csdn.net/images/category_icon.jpg">
<span>分类:</span>
</div>
<div class="category_r">
<label onclick="GetCategoryArticles('1414064','linminqin','top','6697303');">
<span onclick="_gaq.push(['_trackEvent','function', 'onclick', 'blog_articles_fenlei']);">Apache工具<em>(2)</em></span>
<img class="arrow-down" src="http://static.blog.csdn.net/images/arrow_triangle _down.jpg" style="display:inline;">
<img class="arrow-up" src="http://static.blog.csdn.net/images/arrow_triangle_up.jpg" style="display:none;">
<div class="subItem">
<div class="subItem_t"><a href="http://blog.csdn.net/linminqin/article/category/1414064" target="_blank">作者同类文章</a><i class="J_close">X</i></div>
<ul class="subItem_l" id="top_1414064">
</ul>
</div>
</label>
</div>
</div>
<script type="text/javascript" src="http://static.blog.csdn.net/scripts/category.js"></script>
<div class="bog_copyright">
<p class="copyright_p">版权声明:本文为博主原创文章,未经博主允许不得转载。</p>
</div>
populate(bean,map) 将Map中的值设入bean中
- BeanUtils.populate(bean, request.getParameterMap());

BeanUtils.populate(bean, request.getParameterMap());
PropertyUtils.describe() 方法将返回bean中每个可读的属性都添加到Map中去.如果值为设置,将返回默认值,在上面的例子中假如Book类中还有个Integer型的page属性,代表书籍页数.在没设置的情况下,将返回null.如果page属性为int型,则将返回0
摘自:http://www.blogjava.NET/hexuzhong/archive/2005/11/30/21925.html
- Person author = new Person();
- author.setName("Timothy M. O'Brien");
- Book book = new Book();
- book.setName("Jakarta Commons Cookbook");
- book.setAuthor(author);
- // 取得book中的所有可读属性,返回到map中
- Map bookMap = PropertyUtils.describe(book);
- // Book类中包含一个Author类型的属性
- // 取bookMap中的author bean,并将其所有可读属性返回到authorMap中
- Map authorMap = PropertyUtils.describe(bookMap.get("author"));
- // 输出
- // Book Name: Jakarta Commons Cookbook
- // Author Name: Timothy M. O'Brien
- System.out.println("Book Name: " + bookMap.get("name"));
- System.out.println("Author Name: " + authorMap.get("name"));

Person author = new Person();
author.setName("Timothy M. O'Brien");Book book = new Book();
book.setName("Jakarta Commons Cookbook");
book.setAuthor(author); // 取得book中的所有可读属性,返回到map中
Map bookMap = PropertyUtils.describe(book);
// Book类中包含一个Author类型的属性
// 取bookMap中的author bean,并将其所有可读属性返回到authorMap中
Map authorMap = PropertyUtils.describe(bookMap.get("author")); // 输出
// Book Name: Jakarta Commons Cookbook
// Author Name: Timothy M. O'Brien
System.out.println("Book Name: " + bookMap.get("name"));
System.out.println("Author Name: " + authorMap.get("name"));</pre><br>
<div id="digg" articleid="6697303">
<dl id="btnDigg" class="digg digg_disable" onclick="btndigga();">
<dt>顶</dt>
<dd>1</dd>
</dl>
<dl id="btnBury" class="digg digg_disable" onclick="btnburya();">
<dt>踩</dt>
<dd>0</dd>
</dl>
</div>
<div class="tracking-ad" data-mod="popu_222"><a href="javascript:void(0);" target="_blank"> </a> </div>
<div class="tracking-ad" data-mod="popu_223"> <a href="javascript:void(0);" target="_blank"> </a></div>
<script type="text/javascript">
function btndigga() {
$(".tracking-ad[data-mod='popu_222'] a").click();
}
function btnburya() {
$(".tracking-ad[data-mod='popu_223'] a").click();
}
</script>
<div style="clear:both; height:10px;"></div>
<div class="similar_article" style="">
<h4>我的同类文章</h4>
<div class="similar_c" style="margin:20px 0px 0px 0px">
<div class="similar_c_t">
<label class="similar_cur">
<span style="cursor:pointer" onclick="GetCategoryArticles('1414064','linminqin','foot','6697303');">Apache工具<em>(2)</em></span>
</label>
</div>
<div class="similar_wrap tracking-ad" data-mod="popu_141" style="max-height:195px;">
<a href="http://blog.csdn.net" style="display:none" target="_blank">http://blog.csdn.net</a>
<ul class="similar_list fl"><li><em>•</em><a href="http://blog.csdn.net/linminqin/article/details/18798781" id="foot_aritcle_18798781undefined74989474812581" target="_blank" title="org.apache.commons.beanutils.ConversionException: No value specified for 'Date'">org.apache.commons.beanutils.ConversionException: No value specified for 'Date'</a><span>2014-01-26</span><label><i>阅读</i><b>10677</b></label></li> </ul>
<ul class="similar_list fr"><li><em>•</em><a href="http://blog.csdn.net/linminqin/article/details/7929863" id="foot_aritcle_7929863undefined2344384397348549" target="_blank" title="BeanUtils.copyProperties 如果Integer 或Long 为null 默认赋值0">BeanUtils.copyProperties 如果Integer 或Long 为null 默认赋值0</a><span>2012-08-31</span><label><i>阅读</i><b>3995</b></label></li> </ul>
</div>
</div>
</div>
<script type="text/javascript">
$(function () {
GetCategoryArticles('1414064', 'linminqin','foot','6697303');
});
</script>
<div>
<div class="J_adv" data-view="true" data-mod="ad_popu_205" data-mtp="43" data-order="114" data-con="ad_content_1900" style="width: 728px; height: 90px;"><script src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-8990951720398508" data-ad-slot="8267689356/3776917242" data-adsbygoogle-status="done"><ins id="aswift_0_expand" style="display:inline-table;border:none;height:90px;margin:0;padding:0;position:relative;visibility:visible;width:728px;background-color:transparent"><ins id="aswift_0_anchor" style="display:block;border:none;height:90px;margin:0;padding:0;position:relative;visibility:visible;width:728px;background-color:transparent"><iframe width="728" height="90" frameborder="0" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" onload="var i=this.id,s=window.google_iframe_oncopy,H=s&&s.handlers,h=H&&H[i],w=this.contentWindow,d;try{d=w.document}catch(e){}if(h&&d&&(!d.body||!d.body.firstChild)){if(h.call){setTimeout(h,0)}else if(h.match){try{h=s.upd(h,i)}catch(e){}w.location.replace(h)}}" id="aswift_0" name="aswift_0" style="left:0;position:absolute;top:0;"></iframe></ins></ins></ins><script>(adsbygoogle=window.adsbygoogle || []).push({});</script></div>
</div>
.blog-ass-articl dd {
color: #369;
width: 99%; /*修改行*/
float: left;
overflow: hidden;
font: normal normal 12px/23px "SimSun";
height: 23px;
margin: 0;
padding: 0 0 0 10px;
margin-right: 30px;
background: url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;
}
参考知识库

-
.NET知识库
2911关注|815收录
<dt><span>猜你在找</span></dt>
<div id="adCollege" style="width: 42%;float: left;">
<script src="http://csdnimg.cn/jobreco/job_reco.js" type="text/javascript"></script>
<script type="text/javascript">
csdn.position.showEdu({
sourceType: "blog",
searchType: "detail",
searchKey: "6697303",
username: "",
recordcount: "5",
containerId: "adCollege" //容器DIV的id。
});
</script>
<div class="tracking-ad" data-mod="popu_84"><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px; white-space: nowrap;"><a href="http://edu.csdn.net/course/detail/1176" title="Python编程基础视频教程(第三季)" strategy="v4:hot" target="_blank">Python编程基础视频教程(第三季)</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px; white-space: nowrap;"><a href="http://edu.csdn.net/course/detail/1182" title="Python编程基础视频教程(第六季)" strategy="v4:hot" target="_blank">Python编程基础视频教程(第六季)</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px; white-space: nowrap;"><a href="http://edu.csdn.net/course/detail/299" title="从此不求人:自主研发一套PHP前端开发框架" strategy="v4:hot" target="_blank">从此不求人:自主研发一套PHP前端开发框架</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px; white-space: nowrap;"><a href="http://edu.csdn.net/course/detail/1153" title="Swift视频教程(第五季)" strategy="v4:hot" target="_blank">Swift视频教程(第五季)</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px; white-space: nowrap;"><a href="http://edu.csdn.net/course/detail/925" title="Swift视频教程" strategy="v4:hot" target="_blank">Swift视频教程</a></dd></div></div>
<div id="res" data-mod="popu_36" class="tracking-ad" style="width: 42%; float: left; margin-right: 30px; display: block;"><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;"><a href="http://blog.csdn.net/u010087830/article/details/12647883" title="面试总结" strategy="SearchAlgorithm" target="_blank">面试总结</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;"><a href="http://blog.csdn.net/hepanlaurence/article/details/51479430" title="webmagic采集CSDN的Java_WebDevelop页面" strategy="SearchAlgorithm" target="_blank">webmagic采集CSDN的Java_WebDevelop页面</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;"><a href="http://blog.csdn.net/u014403008/article/details/44623779" title="JAVA面试总结" strategy="SearchAlgorithm" target="_blank">JAVA面试总结</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;"><a href="http://blog.csdn.net/permike/article/details/44906463" title="java相关问题" strategy="SearchAlgorithm" target="_blank">java相关问题</a></dd><dd style="background:url(http://static.blog.csdn.net/skin/default/images/blog-dot-red3.gif) no-repeat 0 10px;"><a href="http://blog.csdn.net/languobeibei/article/details/53542038" title="android网络编程" strategy="SearchAlgorithm" target="_blank">android网络编程</a></dd></div>
<div id="ad_cen">
<!-- 广告位开始 -->
<div class="J_adv" data-view="true" data-mod="ad_popu_72" data-mtp="61" data-order="114" data-con="ad_content_1937"><script id="popuLayer_js_q" src="http://ads.csdn.net/js/popuLayer.js" defer="" type="text/javascript"></script><div id="location_parent_google"></div><script src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><div id="layerd_google" style="position: fixed; bottom: 0px; right: 0px; line-height: 0px; z-index: 1000; width: 302px; height: 275px; display: none;"><div class="J_close layer_close" style="display:;background-color:#efefef;padding:0px;color:#333;font:12px/24px Helvetica,Tahoma,Arial,sans-serif;text-align:right;">关闭</div><ins class="adsbygoogle" style="display: inline-block; width: 300px; height: 250px;" data-ad-client="ca-pub-8990951720398508" data-ad-slot="8267689356/2658895482" data-adsbygoogle-status="done"><ins id="aswift_2_expand" style="display:inline-table;border:none;height:250px;margin:0;padding:0;position:relative;visibility:visible;width:300px;background-color:transparent"><ins id="aswift_2_anchor" style="display:block;border:none;height:250px;margin:0;padding:0;position:relative;visibility:visible;width:300px;background-color:transparent"><iframe width="300" height="250" frameborder="0" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" onload="var i=this.id,s=window.google_iframe_oncopy,H=s&&s.handlers,h=H&&H[i],w=this.contentWindow,d;try{d=w.document}catch(e){}if(h&&d&&(!d.body||!d.body.firstChild)){if(h.call){setTimeout(h,0)}else if(h.match){try{h=s.upd(h,i)}catch(e){}w.location.replace(h)}}" id="aswift_2" name="aswift_2" style="left:0;position:absolute;top:0;"></iframe></ins></ins></ins></div><script>(adsbygoogle=window.adsbygoogle || []).push({});</script><script> document.getElementById('popuLayer_js_q').onload=function(){ var styObjd=styObj={width:'302px',height:'275px'};window.CSDN.Layer.PopuLayer('#layerd_google',{storageName:'layerd',styleObj:styObjd,total:50,expoire:1000*60}); }</script></div>
<!-- 广告位结束 -->
<div id="ad_bot">
</div>
<a id="quick-reply" class="btn btn-top q-reply" title="快速回复" style="display:none;">
<img src="http://static.blog.csdn.net/images/blog-icon-reply.png" alt="快速回复">
</a>
<a id="d-top-a" class="btn btn-top backtop" style="display: none;" title="返回顶部" onclick="_gaq.push(['_trackEvent','function', 'onclick', 'blog_articles_huidaodingbu'])">
<img src="http://static.blog.csdn.net/images/top.png" alt="TOP">
</a>
.tag_list
{
background: none repeat scroll 0 0 #FFFFFF;
border: 1px solid #D7CBC1;
color: #000000;
font-size: 12px;
line-height: 20px;
list-style: none outside none;
margin: 10px 2% 0 1%;
padding: 1px;
}
.tag_list h5
{
background: none repeat scroll 0 0 #E0DBD3;
color: #47381C;
font-size: 12px;
height: 24px;
line-height: 24px;
padding: 0 5px;
margin: 0;
}
.tag_list h5 a
{
color: #47381C;
}
.classify
{
margin: 10px 0;
padding: 4px 12px 8px;
}
.classify a
{
margin-right: 20px;
white-space: nowrap;
}
<h5>
<a href="http://www.csdn.net/tag/" target="_blank">核心技术类目</a></h5>
<div class="classify">
全部主题
Hadoop
AWS
移动游戏
Java
Android
iOS
Swift
智能硬件
Docker
OpenStack
VPN
Spark
ERP
IE10
Eclipse
CRM
JavaScript
数据库
Ubuntu
NFC
WAP
jQuery
BI
HTML5
Spring
Apache
.NET
API
HTML
SDK
IIS
Fedora
XML
LBS
Unity
Splashtop
UML
components
Windows Mobile
Rails
QEMU
KDE
Cassandra
CloudStack
FTC
coremail
OPhone
CouchBase
云计算
iOS6
Rackspace
Web App
SpringSide
Maemo
Compuware
大数据
aptech
Perl
Tornado
Ruby
Hibernate
ThinkPHP
HBase
Pure
Solr
Angular
Cloud Foundry
Redis
Scala
Django
Bootstrap
Commons BeanUtils 中对Map的操作的更多相关文章
- Guava中这些Map的骚操作,让我的代码量减少了50%
原创:微信公众号 码农参上,欢迎分享,转载请保留出处. Guava是google公司开发的一款Java类库扩展工具包,内含了丰富的API,涵盖了集合.缓存.并发.I/O等多个方面.使用这些API一方面 ...
- org.apache.commons.beanutils.BeanMap简单使用例子
一.org.apache.commons.beanutils.BeanMap; 将一个java bean允许通过map的api进行调用, 几个支持的操作接口: Object get(Object ke ...
- Apache Commons Beanutils 三 (BeanUtils、ConvertUtils、CollectionUtils...)
前言 前面已经学习了Apache Commons Beanutils包里的PropertyUtils和动态bean,接下来将学习剩下的几个工具类,个人觉得还是非常实用的,特别是CollectionUt ...
- 对于Java Bean的类型转换问题()使用 org.apache.commons.beanutils.ConvertUtils)
在进行与数据库的交互过程中,由数据库查询到的数据放在 map 中,由 map 到 JavaBean 的过程中可以使用 BeanUtils.populate(map,bean)来进行转换 这里要处理的问 ...
- Apache Commons Beanutils 二 (动态Bean - DynaBeans)
相关背景 上一篇介绍了PropertyUtils的用法,PropertyUtils主要是在不修改bean结构的前提下,动态访问bean的属性: 但是有时候,我们会经常希望能够在不定义一个Java类的前 ...
- org.apache.commons.beanutils.BeanUtils的常见用法
import org.apache.commons.beanutils.BeanUtils BeanUtils1. public static void copyProperty(Object bea ...
- 将List集合中的map对象转为List<对象>形式--封装类
import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.Li ...
- 再续前缘-apache.commons.beanutils的补充
title: 再续前缘-apache.commons.beanutils的补充 toc: true date: 2016-05-32 02:29:32 categories: 实在技巧 tags: 插 ...
- POI中HSSF和XSSF操作Excel
POI中HSSF和XSSF操作Excel 在公司实习快一个月了,这段时间公司业务要用JAVA操作复杂的Excel报表.刚开始的Excel还好,没有涉及到复杂的图表,所以使用JXL操作Excel,但 ...
随机推荐
- Deepin-linux下的linux的终端下软件安装和卸载方法
1.方法一: sudo apt update #最好第一步是它 sudo apt install <package_name> --no-upgrade #安装该package但是不升级. ...
- 获取天气预报java代码
import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.IOException; imp ...
- WLC-Right to Use Licensing
1.RTU的介绍 RTU licensing是没有和UDI(unique device identifier)或SN绑定的一种模型.在你接受了最终用户许可协议(EULA)后,使用RTU license ...
- [ DLPytorch ] 文本分类&图像增强
图像增强 图像增广(image augmentation)技术通过对训练图像做一系列随机改变,来产生相似但又不同的训练样本,从而扩大训练数据集的规模.图像增广的另一种解释是,随机改变训练样本可以降低模 ...
- centos610无桌面安装libreoffice缺失字体
1.安装libreoffice 2.安装fontconfig yum -y install fontconfig 3.安装ttmkfdir yum -y install ttmkfdir 4.检查已有 ...
- redhat7.6 httpd 匿名目录 目录加密 域名跳转
配置文件/etc/httpd/conf/httpd.conf 监听80端口和8080端口 1.80端口 2.域名 3.index.html目录 4.网站目录 options Indexes //代 ...
- 为PHP开发搭建环境
为了能在自己的电脑上(mac OS系统)开始编写PHP代码并完成运行,需要有: 1.安装Web服务器 2.安装PHP 3.安装数据库,比如MySQL 4.一个PHP的IDE 为了上面所提到的1~3步的 ...
- ElementUI el-message 提示信息的用法
引入message Element 注册了一个$message方法用于调用,Message 可以接收一个字符串或一个 VNode 作为参数,它会被显示为正文内容. Element 为 Vue.prot ...
- Python 正则表达式之 sub 和 subn函数的使用
re.sub() 函数的功能 re是reguler expressioin的缩写,表示正则表达式 sub 是 substitute 的缩写,表示替换: re.sub是个正则表达式方面的函数,用来实现通 ...
- 一 Spring概述
知识点概要: 1 SpringIOC入门(XML).Spring的Bean管理.Spring属性注入 2 SpringIOC注解方式.Spring的AOP开发(XML) 3 Spring的AOP注解开 ...