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JasperReports报表的开发流程

JasperReports的开发流程1.开发报表设计文件，也就是一个*.jrxml文件。2.使用JasperReports提供的JasperCompileManager工具编译*.jrxml文件，编译后生成一个*.jasper文件。3.使用JasperReports提供的JasperFillManager工具填充编译后的*.jasper文件，填充后生成一个*.jrprint文件。4.使用导出管理器JasperExportManager或者各种格式的文件导出

系统 2019-08-12 09:30:06 3062

Android

【Android Developers Training】 39. 获取文件

注：本文翻译自Google官方的AndroidDevelopersTraining文档，译者技术一般，由于喜爱安卓而产生了翻译的念头，纯属个人兴趣爱好。原文链接：http://developer.android.com/training/secure-file-sharing/retrieve-info.html当一个客户端应用尝试对一个有URI的文件进行操作时，应用可以向服务应用索取关于文件的信息，包括文件的数据类型和文件大小。数据类型可以帮助客户应用确

系统 2019-08-12 01:55:14 3062

操作系统

WPF优化：Freezable冻结对象

WPF虽然很美观，效果很炫，但是对资源的消耗也很大，尤其是初次接触WPF的人，因为很多地方虽然实现了想要的效果，但是由于经验问题，所以也会造成很大的资源浪费，好的程序，需要更好的优化。虽然可能只是节省了很少的一点资源，但是对整体程序运行的速度与稳定性来说，也许就起到了决定性的作用；每个地方都能做到一点优化，那么在成个程序中，优化的效果就会很明显，流畅、稳定，才是一个程序的健康状态。在MSDN上看到的这个说明“对象行为”，上面说到，每一个SolidColor

系统 2019-08-12 01:33:09 3062

Ubuntu

Ubuntu 10.04下安装Tomcat 6

1,下载apache-tomcat6,地址链接：http://archive.apache.org/dist/tomcat/tomcat-6/v6.0.28/bin/选择UbuntuLinux适用版本，即apache-tomcat-6.0.28.tar.gz文件，2,复制安装文件到/usr/local/目录下面，在控制台console输入命令，sudotar-zxvfapache-tomcat-6.0.28.tar.gz,将安装包解压至apache-tom

系统 2019-08-12 01:32:47 3062

Tomcat

优化tomcat——jvm

Tomcat的启动参数位于tomcat的安装目录\bin目录下，如果你是Linux操作系统就是catalina.sh文件，如果你是Windows操作系统那么你需要改动的就是catalina.bat文件。打开该文件，一般该文件头部是一堆的由##包裹着的注释文字，找到注释文字的最后一段如：123#$Id:catalina.sh5227972007-03-2707:10:29Zfhanik$#-----------------------------------

系统 2019-08-12 01:32:42 3062

Python

Python实现类似比特币的加密货币区块链的创建与交易实例

虽然有些人认为区块链是一个早晚会出现问题的解决方案，但是毫无疑问，这个创新技术是一个计算机技术上的奇迹。那么，究竟什么是区块链呢？区块链以比特币（Bitcoin）或其它加密货币按时间顺序公开地记录交易的数字账本。更通俗的说，它是一个公开的数据库，新的数据存储在被称之为区块（block）的容器中，并被添加到一个不可变的链（chain）中（因此被称为区块链（blockchain）），之前添加的数据也在该链中。对于比特币或其它加密货币来说，这些数据就是一组组交易

系统 2019-09-27 17:51:51 3061

编程技术

垣克大战

本面使用jquery-1.3.2和面定位map.jsp,支持一人和双人游戏,实现如下:山寨坦克大战...主坦克方向:WASD,空格发射</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 23:48:09</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">3061</span></span>  </p> </article><article class="excerpt"> <header> <a title="Jquery" class="label label-important zj-del-target" href="/category/65">Jquery<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/19065" title="jquery实现表格的上移、下移、增加、删除" target="_blank" onclick="return recordId('',)">jquery实现表格的上移、下移、增加、删除 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/19065" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/13.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/19065';}else{window.open('/article/19065');}" style="cursor: pointer;">Js代码$(function($){//元素交换$(".up").live('click',function(){$(this).parent().parent().prev("tr").before($(this).parent().parent());});$(".down").live('click',function(){$(this).parent().parent().next("tr").after($(this).parent().pare</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 23:14:40</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">3061</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/15542" title="ExtJs实现手风琴格式菜单展示（折叠菜单）" target="_blank" onclick="return recordId('',)">ExtJs实现手风琴格式菜单展示（折叠菜单） </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/15542" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/18.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/15542';}else{window.open('/article/15542');}" style="cursor: pointer;">一、简单的手风琴格式菜单：Js代码：Ext.onReady(function(){newExt.Panel({renderTo:"hello",title:"容器组件",width:500,height:200,layout:"accordion",layoutConfig:{collapseFirst:false;animate:true},items:[{title:"子元素1",html:"这是子元素1中的内容"},{title:"子元素2",htm</span> <p class="auth-span"> <span class="muted"><i class="fa fa-user"></i><span class="zj-icon-text">系统</span></span> <span class="muted"><i class="fa fa-clock-o"></i><span class="zj-icon-text">2019-08-29 22:29:58</span></span> <span class="muted"><i class="fa fa-eye"></i><span class="zj-icon-text">3061</span></span>  </p> </article><article class="excerpt"> <header> <a title="编程技术" class="label label-important zj-del-target" href="/category/30">编程技术<i class="label-arrow"></i></a> <h2> <a class="zj-titles zj-del-target" href="/article/13777" title="Developer Express控件组合中的GridControl控件" target="_blank" onclick="return recordId('',)">Developer Express控件组合中的GridControl控件 </a> </h2> </header> <div class="focus"> <a class="zj-del-target" href="/article/13777" target="_blank"><img style="width: 200px; height: 123px;" class="thumb" src="/Public/static/images/article/14.jpg" alt="" title=""></a> </div> <span class="note" onclick="if (jq.browser.versions.mobile) {window.location.href='/article/13777';}else{window.open('/article/13777');}" style="cursor: pointer;">1、**************************************DeveloperExpress控件组合中的GridControl控件,如何自动显示每一行的序号?比方说有10条数据记录,我要在记录旁边显示1.2.3.4.这样的数字.但是,如果更改了数据记录的显示方式,升序或者降序都不影响数字的变化.怎么做?在GridView的CustomDrawRowIndicator事件中添加如下代码：privatevoidgridView1_Custo</span> <p 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