cai555 YouMonitor.Us ... And we'll monitor for you! Join the web's first and only global "Neighborhood Watch" for websites. Simple, Fast, Easy, and FREE! http://YouMonitor.Us http://cai555.javaeye.com UTF-8 Copyright 2003-2008, JavaEye.com http://blogs.law.harvard.edu/tech/rss JavaEye - 做最棒的软件开发交流社区 在eclipse里面调试opencms模块代码 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/211708  发表时间: 2008年07月04日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

a. 安装tomcatPlugin

b. 在本机安装opencms

c. 进入eclipse，进入/window/Preferences.../Tomcat/sourcePath

d. 设置你的模块的工程为sourcePath，等会儿debug的时候eclipse就到这里找原代码

e. 使用tomcatPlugin启动tomcat

f. 设置断点，调试

 

由于时间比较久，所以只记得这些，建议如果有疑问可以google一下。


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]]> Fri, 04 Jul 2008 17:09:13 +0800 http://cai555.javaeye.com/blog/211708 http://cai555.javaeye.com/blog/211708 REALVIZ Sticher cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/206926  发表时间: 2008年06月22日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

今天周末,抽了点时间研究了一下REALVIZ Sticher 一个全景照片生成工具,通过它可以将普通的数码相机拍得照片,转换成3D全景影像。接下来，把一些细节的东西记下来，留作备忘：

 

１． 制作一组全景图片的步骤和注意的问题。
（ １） 使照像机平行于地面并最好固定在三角架上。
（ ２） 拍摄每一幅照片时要保持照像机在同一个高度。
（ ３） 以一个固定点为圆心， 顺时针方向旋转拍摄每一幅照片。
（ ４） 每一幅照片的边界要有３０％ 左右的重叠区域。
（ ５） 要注意将移动的物体拍摄在照片的中间， 不要让移动物体出现的照片相交错的边界上， 以免对以后照片的边界处理带来不便。
（ ６） 根据你使用的照像设备的不同， 使用扫描仪等设备将照片处理成JPG格式的图片文件， 图片的尺寸可根据你自己的需要决定， 文件名最好按字母顺序排列。

 

 

2.如何在REALVIZ Sticher拖动生成的3D图片。

（1）使用REALVIZ Sticher打开你刚拍好的照片，使用Automatic stitch自动拼接照片生成3D照片。

（2）按住ctrl使用鼠标拖动，就可以使3d照片旋转起来。在“Enter or Quite Movie Tools”（就是在把3D照片导成视频的那个菜单里面）里面则是按住alt键，然后拖动鼠标。


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]]> Sun, 22 Jun 2008 22:32:58 +0800 http://cai555.javaeye.com/blog/206926 http://cai555.javaeye.com/blog/206926 HTML Select 下拉菜单功能扩展 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/206513  发表时间: 2008年06月21日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

忙里偷闲，抽空写了一个HTML Select  下拉菜单的AJAX功能扩展，自己觉得用起来还蛮方便，写个blog备忘一下，同时也可以拿出来个大家共享，这里只给出demo,详细请看代码的注释，但愿我的注释够详细。

 

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
<title>Yoyoor</title>
<script type="text/javascript" src="js/mootools-release-1.11.js"></script>
<script type="text/javascript" src="js/mootoolsAjaxExt.js"></script>
<script type="text/javascript" src="js/selectExt.js"></script>
</head>

<body>
<select id="ajaxSelect" url="data.js"></select>
<select id="ajaxSelect2"></select>
<select id="ajaxSelect3" url="data.js"></select>
<script type="text/javascript">
window.onload = function(){
	var s1, s2, s3;
	
	getHTMLSelectElement("ajaxSelect").loadByAjax();
	
	getHTMLSelectElement("ajaxSelect2").loadByAjax({
	url:"data.js",
	remainInx: 0,
	sort: function(){return -1},
	complete: function(){
		getHTMLSelectElement("ajaxSelect3").loadByAjax();
	}
	});
}
</script>
</body>
</html>

 motools lib的下载地址：http://motools.net 请注意版本号


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]]> Sat, 21 Jun 2008 00:08:21 +0800 http://cai555.javaeye.com/blog/206513 http://cai555.javaeye.com/blog/206513 如何让session timeout 不显示在iframe里面 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/205774  发表时间: 2008年06月19日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

参考：http://www.webmasterworld.com/forum91/2831.htm

 

1. if (top!= self) top.location=self.document.location;

 

2. if(top.location!= document.location) top.location = document.location;

 

3. 

if (top!= self)  
 if (location) top.location.replace(self.location.href) 
 else top.document.location.replace(self.document.location.href);

个人感觉第三种比较好

 


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]]> Thu, 19 Jun 2008 14:18:33 +0800 http://cai555.javaeye.com/blog/205774 http://cai555.javaeye.com/blog/205774 POI实现插入一行操作，就像office excel插入一行的操作 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/202963  发表时间: 2008年06月13日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

注意此例需要jxls的支持 ： 

/**
	 * insert row into the target sheet, the style of cell is the same as startRow
	 * @param wb
	 * @param sheet
	 * @param starRow - the row to start shifting
	 * @param rows
	 */
	 public static void insertRow(HSSFWorkbook wb, HSSFSheet sheet, int startRow,int rows) {
		 
		  sheet.shiftRows(startRow + 1, sheet.getLastRowNum(), rows,true,false);
		  //  Parameters:
		  //   startRow - the row to start shifting
		  //   endRow - the row to end shifting
		  //   n - the number of rows to shift
		  //   copyRowHeight - whether to copy the row height during the shift
		  //   resetOriginalRowHeight - whether to set the original row's height to the default

		  for (int i = 0; i < rows; i++) {
			  
			  	HSSFRow sourceRow = null;
			  	HSSFRow targetRow = null;
			  	
			  	sourceRow = sheet.getRow(startRow);
			  	targetRow = sheet.createRow(++startRow);
			  	
			  	Util.copyRow(sheet, sourceRow, targetRow);
		  }
		  
	}

 

插入行会继承第“startRow”行的样式，实际上就是拷贝“startRow”,甚至包括合并的单元格

 

参考了http://blog.csdn.net/daemon_boy/archive/2007/09/15/1786384.aspx的代码


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]]> Fri, 13 Jun 2008 14:41:44 +0800 http://cai555.javaeye.com/blog/202963 http://cai555.javaeye.com/blog/202963 POI拷贝Sheet包括每个单元格的style cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/202961  发表时间: 2008年06月13日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

注意本例需要jxls的支持

 

/**
	 * copy all rows include styles from source sheet to target sheet
	 * @param srcSheet
	 * @param targetSheet
	 */
	public static void copySheet(HSSFSheet srcSheet, HSSFSheet targetSheet){
		Iterator it = srcSheet.rowIterator();
		while(it.hasNext()){
			HSSFRow srcRow = (HSSFRow) it.next();
			Util.copyRow(srcSheet, targetSheet, srcRow, targetSheet.createRow(srcRow.getRowNum()));
		}
	}
 
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]]> Fri, 13 Jun 2008 14:37:29 +0800 http://cai555.javaeye.com/blog/202961 http://cai555.javaeye.com/blog/202961 寻找同一张表中 id 字段重复的记录 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/191321  发表时间: 2008年05月09日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

select   id   from   tab1    
  group   by   id   having   count(*)   >   1


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]]> Fri, 09 May 2008 10:12:35 +0800 http://cai555.javaeye.com/blog/191321 http://cai555.javaeye.com/blog/191321 javascript &&后面的函数需要注意的 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/190704  发表时间: 2008年05月07日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

执行下面的代码,你会发现&&后面的函数不会执行：

function test(){alert("test"); return false;}

flag = flase &&　test();
 

为什么呢,解释器在遇到第一个false的时候，就不再执行后面的函数了，这样可以节省运算，因为有第一个flase就表示flag一定为flase，没有必要再执行后面的函数了。


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]]> Wed, 07 May 2008 19:59:55 +0800 http://cai555.javaeye.com/blog/190704 http://cai555.javaeye.com/blog/190704 Firefox input 光标丢失 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/190341  发表时间: 2008年05月06日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

在用Firefox浏览页面时是否发现鼠标点击 textarea,input表单输入文本时闪烁的光标不见了,但能正常输入文本呢?
你很幸运遇到了”Firefox光标丢失”的问题,前阵子也被这问题搞到头晕晕的,总结一下出现这问题的原因做了个简单的例子。
光标丢失据我所知是Firefox的BUG,在IE系列 及Opera 等浏览器均正常! 有可能在Firefox3.0后会修复这问题,但我们现所用的都是2.0


事例1:
Firefox光标丢失

以下面为例,总结了页面容器中设置了以下部分属性,均会导致Firefox光标丢失：

  1. overflow:auto
  2. overflow-x:auto;
  3. overflow-y:auto;
  4. overflow:scroll
  5. overflow-x:scroll;
  6. overflow-y:scroll;
  7. overflow-x:hidden;
  8. overflow-y:hidden;
  9. position:absolute

注意:上面没写到overflow:hidden; 因为overflow:hidden;可以正常使用没影响到Firefox的光标丢失

上面例子解决的办法:

  • 1. 避免在body设置会令光标丢失overflow:XXX属性,overflow:hidden;除外 参考事例2
  • 2. 在position:absolute;加多个针对FF写的position:fixed; 但IE6不支持此属性,可以写成:#box { position:fixed;_position:absolute; …参考事例3

引用自：http://blog.gulu77.com/?p=10


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]]> Tue, 06 May 2008 18:31:39 +0800 http://cai555.javaeye.com/blog/190341 http://cai555.javaeye.com/blog/190341 谁能告诉我为什么parseInt('09'); parseInt('08');的结果居然为零？！！ cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/188863  发表时间: 2008年05月02日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

有兴趣的朋友可以执行下面这段脚本：

<input type="button" value="parseInt('05')" onclick="alert(parseInt('05'))">

<input type="button" value="parseInt('08')" onclick="alert(parseInt('08'))">

<input type="button" value="parseInt('09')" onclick="alert(parseInt('09'))">

我在IE7和FF下面试过了parseInt('05')=5，可是parseInt('08')，parseInt('09')却等于零，而且就这两个数字最特别，居然为0，百思不得其解，希望有人知道为什么。

 


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]]> Fri, 02 May 2008 16:45:25 +0800 http://cai555.javaeye.com/blog/188863 http://cai555.javaeye.com/blog/188863 javascript获得DOM元素X,Y坐标的函数 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/188334  发表时间: 2008年04月30日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

以下是YUI用的函数：

isSafari = (document.childNodes && !document.all && !navigator.taintEnabled);
	var getXY = function(el) {
        if (document.documentElement.getBoundingClientRect) { // IE
			var box = el.getBoundingClientRect();

			var rootNode = el.ownerDocument;
			return [box.left + getDocumentScrollLeft(rootNode), box.top +
					getDocumentScrollTop(rootNode)];
        } else {
            var pos = [el.offsetLeft, el.offsetTop];
			var parentNode = el.offsetParent;

			// safari: subtract body offsets if el is abs (or any offsetParent), unless body is offsetParent
			var accountForBody = (isSafari &&
					el.style['position'] == 'absolute' &&
					el.offsetParent == el.ownerDocument.body);

			if (parentNode != el) {
				while (parentNode) {
					pos[0] += parentNode.offsetLeft;
					pos[1] += parentNode.offsetTop;
					if (!accountForBody && isSafari && 
							parentNode.style['position'] == 'absolute' ) { 
						accountForBody = true;
					}
					parentNode = parentNode.offsetParent;
				}
			}

			if (accountForBody) { //safari doubles in this case
				pos[0] -= el.ownerDocument.body.offsetLeft;
				pos[1] -= el.ownerDocument.body.offsetTop;
			} 
			parentNode = el.parentNode;

			// account for any scrolled ancestors
			while ( parentNode.tagName && !/^body|html$/i.test(parentNode.tagName) ) 
			{
			   // work around opera inline/table scrollLeft/Top bug
			   if (parentNode.style['display'].search(/^inline|table-row.*$/i)) { 
					pos[0] -= parentNode.scrollLeft;
					pos[1] -= parentNode.scrollTop;
				}
				
				parentNode = parentNode.parentNode; 
			}

			return pos;
        }
    }

	/**
	 * Returns the left scroll value of the document 
	 * @method getDocumentScrollLeft
	 * @param {HTMLDocument} document (optional) The document to get the scroll value of
	 * @return {Int}  The amount that the document is scrolled to the left
	 */
	getDocumentScrollLeft = function(doc) {
		doc = doc || document;
		return Math.max(doc.documentElement.scrollLeft, doc.body.scrollLeft);
	}, 

	/**
	 * Returns the top scroll value of the document 
	 * @method getDocumentScrollTop
	 * @param {HTMLDocument} document (optional) The document to get the scroll value of
	 * @return {Int}  The amount that the document is scrolled to the top
	 */
	getDocumentScrollTop = function(doc) {
		doc = doc || document;
		return Math.max(doc.documentElement.scrollTop, doc.body.scrollTop);
	}

 下面是精简版：

function getX(obj){
        return obj.offsetLeft + (obj.offsetParent ? getX(obj.offsetParent) : obj.x ? obj.x : 0);
    }        
    function getY(obj){
        return (obj.offsetParent ? obj.offsetTop + getY(obj.offsetParent) : obj.y ? obj.y : 0);
    }

 不过只支持IE和FF


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]]> Wed, 30 Apr 2008 11:09:51 +0800 http://cai555.javaeye.com/blog/188334 http://cai555.javaeye.com/blog/188334 javascript 求div宽度时去掉px的超高效写法 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/187530  发表时间: 2008年04月28日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！ 

<html>

<head>

<style type="text/css">

div#mydiv {

   width: 100px;

   height: 100px;

   background-color: red;

}

</style>

<script language="JavaScript">

function addWidth() {

   var mydiv = document.getElementById("mydiv");

   alert(mydiv.style.width+","+parseInt(mydiv.style.width));

   var curr_width = parseInt(mydiv.style.width); // removes the "px" at the end

   mydiv.style.width = (curr_width + 10) +"px";

}

</script>

</head>

<body>

<input type="button" value="Make Bigger" onclick="addWidth()" />

<div id="mydiv" style="width:100px"></div>

</body>

</html>

主要是这句： var curr_width = parseInt(mydiv.style.width); // removes the "px" at the end

是不是很有意思？


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]]> Mon, 28 Apr 2008 13:49:41 +0800 http://cai555.javaeye.com/blog/187530 http://cai555.javaeye.com/blog/187530 使用telnetd java类库制作守护线程 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/182020  发表时间: 2008年04月12日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

telnetdV2.0是一个纯java的telnet类库，可以作为一个telnet守护线程嵌入到自己的程序里面，可是我从http://telnetd.sourceforge.net

下载了一个包以后发现里面没有任何的文档，没办法，只能啃代码了，好在它还有一个例子程序（在/telnetd/src/net/wimpi/telnetd/TelnetD.java里面） ，main函数也超简单，其作用的是以下这个部分：

 } else {






        myTD = TelnetD.createTelnetD(args[0]);






      }






      //2.start serving/accepting connections






      myTD.start();

 args[0]里面存的是一个叫telnetd.properties的配置文件的url，如果你用的是本地文件，可以这样写：

file:///F:/telnetd/telnetd.properties  （这个配置文件，包里面也有现成的） 。

可能你会问我怎么获得telnet客户端输入的数据和命令呢？ 别急，接下来我就告诉你怎么一回事，打开telnetd.properties 前面的东西都不用管，你要设置的是

##################
# Shells Section #
##################

# List of shells available and defined below
shells=dummy,deamon

# shell implementations
shell.dummy.class=net.wimpi.telnetd.shell.DummyShell

shell.deamon.class=mypackage.DeamonShell

和

#####################
# Listeners Section #
#####################

 

两部分，实际上telnetd使用了反射工厂模式 ，当有客户端连上一个listener的时候，实例化一个对应的shell实例 ，这个实例继承了net.wimpi.telnetd.shell.Shell（具体看net.wimpi.telnetd.shell.DummyShell） ，你所要做的就是模仿DummyShell继承net.wimpi.telnetd.shell.Shell创建自己的shell类来处理客户端的请求。

而listener section就是设置服务器端serversocket监听器的配置了，比如端口，telnetd支持多个端口的telnet监听，而实现这个的配置就是：

listeners=std



# std listener specific properties

#Basic listener and connection management settings
std.port=6666
std.floodprotection=5
std.maxcon=25


# Timeout Settings for connections (ms)
std.time_to_warning=3600000
std.time_to_timedout=60000

# Housekeeping thread active every 1 secs
std.housekeepinginterval=1000

std.inputmode=character

# Login shell
std.loginshell=dummy

# Connection filter class
std.connectionfilter=none

如果你要同时监听两个端口，6666和7777那么你只需要这么写：

listeners= std,myListener

std配置如上...

myListener.port=7777

以下与std类似...

# Login shell
myListener.loginshell=deamon

...

现在明白了吗，要注意# Login shell这个配置，std.loginshell=dummy 而myListener.loginshell=deamon 的意思就是说：

如果你使用telnet客户端，连接6666端口的话，net.wimpi.telnetd.shell.DummyShell会为你服务，而如果你使用7777端口的话，mypackage.DeamonShell会来招呼你。

好了，我就研究到这里，反正用它足够开关我的多线程程序了，如果你还有什么不明白的，或者想要了解更多，建议可以看它的原代码。


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]]> Sat, 12 Apr 2008 10:30:09 +0800 http://cai555.javaeye.com/blog/182020 http://cai555.javaeye.com/blog/182020 POI中读取自定义格式(日期)数据的问题 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/177297  发表时间: 2008年03月28日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

以下代码可以解决这个问题：

if(cell.getCellType() == HSSFCell.CELL_TYPE_NUMERIC 
&& cell.getCellStyle().getDataFormat() == 
HSSFDataFormat.getBuiltinFormat("h:mm")){
			String sDate = cell.getNumericCellValue()+"";
			if(!StringUtil.isEmpty(sDate)){
				Date date = HSSFDateUtil.getJavaDate(cell.getNumericCellValue());
				return new SimpleDateFormat("h:mm").format(date);
			}
			return "";
}
 
其中，单元格的格式属性是custom h:mm
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]]> Fri, 28 Mar 2008 16:05:55 +0800 http://cai555.javaeye.com/blog/177297 http://cai555.javaeye.com/blog/177297 引用Opencms自带的树形页面 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/174119  发表时间: 2008年03月20日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

在使用move/rename功能时，点击输入框的右边的search按钮，OpenCms会弹出一个对话框让你选择move的路径，怎样在自己的页面里面调用这个弹出窗口呢？以下代码揭示了方法：

		<script type="text/javascript">
		function openTreeWin(treeType, includeFiles, formName, fieldName, curDoc) {
			var paramString = "";
			if (treeType) {
				paramString += "?type=" + treeType;
			}
			if (includeFiles) {
				paramString += ((paramString == "")?"?":"&");
				paramString += "includefiles=true";
			}
			var target = "/system/workplace/views/explorer/tree_fs.jsp" + paramString;
			if(location.pathname.indexOf("/opencms/opencms") == 0){
				target = "<%=request.getProtocol()%>://<%=request.getScheme()%>:<%=request.getProtocol()%>/opencms/opencms"+target;
			}
			treewin = openWin(target, "opencms", 300, 450);
			if (treewin.opener == null){
				treewin.opener = self;
			}
			treeForm = formName;
			treeField = fieldName;
			treeDoc = curDoc;
		}
		function openWin(url, name, w, h) {
			var newwin = window.open(url, name, 'toolbar=no,location=no,directories=no,status=yes,menubar=0,scrollbars=yes,resizable=yes,top=150,left=660,width='+w+',height='+h);
			if(newwin != null) {
				if (newwin.opener == null) {
					newwin.opener = self;
				}
			}
			newwin.focus();
			return newwin;
		}
		function setFormValue(filename) {
			document.getElementById("target").value = filename;
		}
		</script>
		</head>
		<body>
		<input type="text" id="target" name="target" value=""/><a href="javascript:openTreeWin('copy', true);" >search</a>
		...
 

 


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]]> Thu, 20 Mar 2008 14:31:48 +0800 http://cai555.javaeye.com/blog/174119 http://cai555.javaeye.com/blog/174119 How to set a value in a xmlcontent resource cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/174112  发表时间: 2008年03月20日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

我引用两个老外的代码来说明问题:

如果你使用这一段代码,试图改变一个xmlcontent的内容的话，你不会成功

CmsResource document = (CmsResource) cms.getCmsObject().readResource(xmlcontentPath);

CmsXmlContent xmlContent = CmsXmlContentFactory.unmarshal(cms.getCmsObject(), document, request);

xmlContent.getValue("Date", cms.getRequestContext().getLocale()).setStringValue(cms.getCmsObject(), String.valueOf(Calendar.getInstance(new java.util.Locale("es")).getTimeInMillis()));

cms.getCmsObject().writeFile(xmlContent.getFile());

为什么？因为你必须先把修改好的xmlcontent的字节码重新写回到CmsFile对象里面去：

//you need to insert a line like this before you write the XML content:
//The reason is that the underlying file object of the XML content is not automatically updated when you modify the XML content values.

xmlContent.getFile().setContents(xmlContent.marshal());

 不过根据我实践的结果，光是这一点还不够，你在修改文件前，还要锁定文件：

/* lock this xmldoc, must be done before save */
			cmsobject.lockResource(fileName);

如果还是报can not read resource的异常，八成是你的siteroot不对，这时在程序最前面加上：

/* set site root is important before read xml doc, or you can not read resource from '/' */
		cmso.getRequestContext().setSiteRoot("/");

  

老外讨论的原文：http://www.nabble.com/How-to-set-a-value-in-a-xmlcontent-resource-td13809143.html

 

 

 

 

 


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]]> Thu, 20 Mar 2008 14:22:13 +0800 http://cai555.javaeye.com/blog/174112 http://cai555.javaeye.com/blog/174112 OpenCms 参数path 与name的区别 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/173101  发表时间: 2008年03月17日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

直接调用过OpenCms api的肯定知道，org.opencms.xml.content.CmsXmlContent有两种获得value的方法：

public CmsXmlContentValueSequence getValueSequence(java.lang.String name,
                                                   java.util.Locale locale)

和

public I_CmsXmlContentValue getValue(java.lang.String path,
                                     java.util.Locale locale)

 

这里面path和name这连个参数有什么区别呢？假如，你有一个.xsd文件定义了，一个field叫Name那么path就是：Name[1], 而name就是Name，如果Name是一个可以人一添加的field(minOccurs="0" maxOccurs="unbounded")那么第二个Name的path=Name[2],以此类推。你可以调用org.opencms.xml.CmsXmlUtils里面的方法：public static java.lang.String createXpathElement(java.lang.String path, int index) 来生成path。

 

 


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]]> Mon, 17 Mar 2008 17:53:18 +0800 http://cai555.javaeye.com/blog/173101 http://cai555.javaeye.com/blog/173101 OpenCms 静态导出 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/173087  发表时间: 2008年03月17日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

east_java 兄问我static export如何操作，我给他说明一下，其实非常简单：

 

登陆OpenCms，在最顶上的菜单里面选择：view=Administration 再选择DataBaseManagement，然后在Additional tools里面选择start static export，然后顺着wizard一步一步往下就可以了。如果遇到404问题，可以参照OpenCms static export 404 error 这篇文章。希望对你有帮助。

 

 


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]]> Mon, 17 Mar 2008 17:30:15 +0800 http://cai555.javaeye.com/blog/173087 http://cai555.javaeye.com/blog/173087 java.sql.SQLException: Data truncated for column ' cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/171497  发表时间: 2008年03月14日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

今天遇到了一个jdbc的异常：

java.sql.SQLException: Data truncated for column 'XXX' at row 1

在http://forums.mysql.com/read.php?39,57206,57366上面找到了原因，贴出来和大家共享，原因是column 'XXX'在数据库里面定义的是Float类型，而我在set PreparedStatement的时候,把值设成了string（st.setString(index, value)），实际上应该调用setFloat，和mysql那篇文章犯了同样的错误。

 


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]]> Fri, 14 Mar 2008 19:42:29 +0800 http://cai555.javaeye.com/blog/171497 http://cai555.javaeye.com/blog/171497 使用正则表达式从字符串中分离出数字 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/171483  发表时间: 2008年03月14日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

以下代码的作用是使用Java正则表达式从字符串："fdkaljjdklafj12345.6789afjakfdall34567.89fdsalffsafa"分离出数字。

 

Matcher   m   =   Pattern.compile("[\\d.]+").matcher("fdkaljjdklafj12345.6789afjakfdall34567.89fdsalffsafa");  
		m.find();  
		String value = m.group();
		Float lValue = Float.valueOf(value);
		System.out.println(lValue);
 如果m.find()两次，就找到第二个数字。
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]]> Fri, 14 Mar 2008 17:53:32 +0800 http://cai555.javaeye.com/blog/171483 http://cai555.javaeye.com/blog/171483 Eclipse plugins for firefox extension development cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/170851  发表时间: 2008年03月13日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

介绍两个用于开发firefox extension 的eclipse 插件：
1.XulBrooster: http://cms.xulbooster.org/

2.Spket IDE: http://www.spket.com/download.html
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]]> Thu, 13 Mar 2008 15:49:45 +0800 http://cai555.javaeye.com/blog/170851 http://cai555.javaeye.com/blog/170851 javascript width 语句的作用 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/170638  发表时间: 2008年03月12日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

with 语句通常用来缩短特定情形下必须写的代码量。在下面的例子中，请注意 Math 的重复使用：

x = Math.cos(3 * Math.PI) + Math.sin(Math.LN10)
y = Math.tan(14 * Math.E)
当使用 with 语句时，代码变得更短且更易读：

with (Math){
x = cos(3 * PI) + sin (LN10)
y = tan(14 * E)
}

come from:http://topic.csdn.net/t/20060829/02/4982355.html
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]]> Wed, 12 Mar 2008 20:28:42 +0800 http://cai555.javaeye.com/blog/170638 http://cai555.javaeye.com/blog/170638 OpenCms Listener 监听器的使用 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/170075  发表时间: 2008年03月11日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

如果想在OpenCms发布数据的同时do something怎么办呢？你可以使用PublishListener,publish事件监听器，OpenCms有事件的概念，有点类似javascript的listener。下面我就教你怎么写一个完整的Publish监听器。

 

第一步：创建一个ActionClass继承org.opencms.module.I_CmsModuleAction

import org.opencms.configuration.CmsConfigurationManager;
import org.opencms.db.CmsPublishList;
import org.opencms.file.CmsObject;
import org.opencms.main.CmsEvent;
import org.opencms.main.OpenCms;
import org.opencms.module.CmsModule;
import org.opencms.module.I_CmsModuleAction;
import org.opencms.report.I_CmsReport;

public class ActionClass implements I_CmsModuleAction {

	public void initialize(CmsObject cmso, CmsConfigurationManager arg1,
			CmsModule arg2) {
		OpenCms.getPublishManager().addPublishListener(new MyPublishListener(cmso));
	}

	public void moduleUninstall(CmsModule arg0) {
		// TODO Auto-generated method stub

	}

	public void moduleUpdate(CmsModule arg0) {
		// TODO Auto-generated method stub

	}

	public void publishProject(CmsObject arg0, CmsPublishList arg1, int arg2,
			I_CmsReport arg3) {
		// TODO Auto-generated method stub

	}

	public void shutDown(CmsModule arg0) {
		// TODO Auto-generated method stub

	}

	public void cmsEvent(CmsEvent arg0) {
		// TODO Auto-generated method stub

	}

}

 第二步：创建MyPublishListener继承org.opencms.publish.I_CmsPublishEventListener

import org.opencms.db.CmsPublishList;
import org.opencms.file.CmsFile;
import org.opencms.file.CmsObject;
import org.opencms.file.CmsResource;
import org.opencms.file.types.CmsResourceTypeXmlContent;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.publish.CmsPublishJobBase;
import org.opencms.publish.CmsPublishJobEnqueued;
import org.opencms.publish.CmsPublishJobFinished;
import org.opencms.publish.CmsPublishJobRunning;
import org.opencms.publish.I_CmsPublishEventListener;
import org.opencms.util.CmsUUID;
import org.opencms.xml.CmsXmlException;
import org.opencms.xml.content.CmsXmlContent;
import org.opencms.xml.content.CmsXmlContentFactory;

public class MyPublishListener implements I_CmsPublishEventListener{

	private CmsObject cmso;
	
	public MyPublishListener(CmsObject cmso){
		this.cmso = cmso;
	}
	
	public void onAbort(CmsUUID arg0, CmsPublishJobEnqueued arg1) {
		//do something on abort
	}

	public void onEnqueue(CmsPublishJobBase arg0) {
		//do something on file insert into publish queue
	}

	public void onFinish(CmsPublishJobRunning publishJob) {
		//do something on publish finished
	}

	public void onRemove(CmsPublishJobFinished arg0) {
		//do something on publish removed
	}

	public void onStart(CmsPublishJobEnqueued arg0) {
		//do something on publish start
	}

}

 一般自定义代码写在onFinish方法里面，OpenCms每发布一个文件就执行一次onFinish，所以在onfinish里面获得CmsResource就是当前发布的文件。

以下是在onFinish里面获得CmsResource的代码：

CmsPublishList publishList = publishJob.getPublishList();
		List fileList = publishList.getFileList();
		Iterator it = fileList.iterator();
		while(it.hasNext()){
			CmsResource resource = (CmsResource) it.next();
}

第三步，进入view=Administration，进入Module Manage，选择你自己的module，选择Edit Module，在ActionClass里面写入你自己的ActionClass（包名+ClassName），然后再onFinish方法里面加入一些输出代码，重启Tomcat，试着发布一个文件，看看有没有效果？

 

 


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]]> Tue, 11 Mar 2008 10:48:37 +0800 http://cai555.javaeye.com/blog/170075 http://cai555.javaeye.com/blog/170075 OpenCms export属性 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/166980  发表时间: 2008年03月03日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

if static export is disabled nothing is exported and the rules are not
used.

For the handeling of the link tags one standard rule is generated with
the url_prefix_http value. So you can still configure the servletpath.staticexport.enabled=true

the static export is controlled by the resource property export.
It has 6 possible values: true, false, dynamic, https, https_enabled and dynamic_https_enabled.
With the property staticexport.default.export you can decide whitch
value is used if a resource and all parentfolders don't have the the property export set.

If your site shoud be exported except a few resources you set the default to true and add the export=dynamic property to the folder where the dynamic pages are.
If your site is mostly dynamic you set the default to dynamic and add the export=true property to the pics and the download folder.
Only the values 'true' and 'dynamic' are allowed. staticexport.default.export=true the path where to save the exported pages. This path may be relative or absolute. staticexport.path=/home/httpd/html Prefix variables.
The export prefix defines where to find the static reources.
The http prefix defines the way to the dynamic resources in OpenCms.
The https and the servername are used only for ssl. (If you use ssl you have to
set the values like:
 https://server.de/$%7BWEB_APP_NAME%7D/opencms for the https prefix and
 http://server.de/ for the servername)
 The String ${WEB_APP_NAME} will be replaced by the name of the webapplication. These variables can also be used in the rulesets.
 url_prefix_export=
 url_prefix_http=/${WEB_APP_NAME}/opencms
 url_prefix_https=
 url_prefix_servername= the name of the ruleset used to replace links while exporting, in the online project, in the offlineproject and for the name in the extern file system.
There are two sets of rules. Depending of the staticexport.default.export parameter the linkrules.true or the linkrules.dynamic are used.
linkrules.true.export=exportrules
linkrules.true.online=exportrules
linkrules.true.offline=offlinerules
linkrules.true.extern=externrules
linkrules.dynamic.export=dynamic_exportrules
linkrules.dynamic.online=dynamic_exportrules
linkrules.dynamic.offline=dynamic_offlinerules
linkrules.dynamic.extern=dynamic_externrules

the start rule used for extern and export (not for online and offline).
(the rules are regular expressions in perl5 standard) exportfirstrule=s#.([^&\?]*)=([^&\?]*)#_$1$2#g The start rule feature is removed.
Instead there is a new feature: While exporting if after the dynamic rueles nothing has changed the parameters of the link will be decoded in the name.
so "/index.html?newsid=27&size=100" is replaced by "/index_402.html" where 402 is the id of the link in the database. Further rules (after the dynamic ones) will be processed with the new link.

The rulesets for linkreplacement as comma seperated lists You can use the ${WEB_APP_NAME} variable for the webapplication name and the four prefix variables defined above (${url_prefix_export}, {url_prefix_http},...).
They will be replaced befor using the regular expression.
In addition to this it is possible to define the place where the dynamic generated rules should be used instead of a rule use the expression *dynamicRules* (including the *'s).
OpenCms replaces this with the dynamic generated rules.
There are two types of dynamic rules. The first one is generated with the resourceproperty "exportname".
For each resouce with this property a rule will be generated that replaces the absolute path of this resource with the value of the property. It is principally used to get nice short foldernames on the disc.
The second kind of dynamic rules are generated with the property "export".
The possible values are explained below.

Possible values for the "export" property are:

export=true
   The marked resource is exported.
   For the online project, all links that point to this resource are
   build according to the "linkrules.true.extern" (see above) ruleset.
   All links found on the marked resource that have been
   marked with the <link/> tag are followed and also checked for export.
   Example:
      VFS =/index.html
      RFS =${webapp_path}/opencms/export/index.html
      Link=<a href="${url_prefix_export}/index.html"/>

 export=false
   The marked resource is not exported.
   For the online project, all links that point to this resource are
   build according to the "linkrules.true.online" (see above) ruleset.
   Links on the marked resource that are marked with the <link/> tag are
   NOT followed and therefore not exported.
   Example:
      VFS =/index.html
      RFS =(none)
      Link=<a href="${url_prefix_http}/index.html"/>

 export=dynamic
   The marked resource is not exported.
   For the online project, all links that point to this resource are
   build according to the "linkrules.dynamic.online" (see above) ruleset.
   All links found on the marked resource that have been
   marked with the <link/> tag are followed and also checked for export.
   Example:
      VFS =/index.html
      RFS =(none)
      Link=<a href="${url_prefix_http}/index.html"/>

 Static exort and https:
   If you intent to use https settings with the export,
   you must extend the ${url_prefix_http} to include the http protocol,
   and also set the ${url_prefix_https} and the ${url_prefix_servername}.
   In this case, all links will be absolute links that contain server name
   and protocol (but see also the resource setting "export=https_enabled"
   explained below).

 export=https
   The marked resource is not exported, but treated as a https resource.
   For the online project, all links that point to this resource are
   build according to the "linkrules.true.online" (see above) ruleset,
   using the "url_prefix_https" Prefix.
   All access to this resource that is NOT using the https protocol
   is forbidden!
   All links found on the marked resource that have been
   marked with the <link/> tag are followed and also checked for export.
   Example:
      VFS =/index.html
      RFS =(none)
      Link=<a href="${url_prefix_https}/index.html"/>

 export=https_enabled
   The marked resource is not exported.
   For the online project, all links that point to this resource are
   build according to the "linkrules.true.extern" (see above) ruleset.
   No protocol will be used for the link, so that a browser that
   was in https mode will be staying in https, while a http request
   will stay in http mode.
   Use this parameter esp. for images to prevent the dreaded webbrowser warning
   that tells you something like "The page you are about
   to view uses secure and unsecure data".
   All links found on the marked resource that have been
   marked with the <link/> tag are followed and also checked for export.
   Example:
      VFS =/index.html
      RFS =(none)
      Link=<a href="/${web_app_name}/${opencms_servlet_name}/index.html"/>

 export=dynamic_https_enabled
   The marked resource is not exported, but treated as a https resource.
   This is like "export=dynamic" with the addition that the resource
   will only be delivered if the request is a https request,
   Example:
      VFS =/index.html
      RFS =(none)
      Link=<a href="${url_prefix_https}/index.html"/>

The dynamic rules are only for export, online and extern rules. Don't use them in the offlineruleset.
 The parameterreplacement is done in the dynamic rules. So it works together with the exportname rule.
 If you have a rule befor the dynamic rules that is triggered the parameterreplacement will not happen.
 ruleset.offlinerules=s#^#${url_prefix_http} ruleset.exportrules=*dynamicRules*, \s#^#${url_prefix_export}# ruleset.externrules=*dynamicRules*
 ruleset.dynamic_offlinerules=s#^#${url_prefix_http}#
 ruleset.dynamic_exportrules=*dynamicRules*, \
 s#(.*\.gif$)#${url_prefix_export}$1#, \
 s#(.*\.jpg$)#${url_prefix_export}$1#, \
 s#(.*\.pdf$)#${url_prefix_export}$1#, \
 s#(.*\.css$)#${url_prefix_export}$1#, \
 s#(.*\.doc$)#${url_prefix_export}$1#, \
 s#(.*\.exe$)#${url_prefix_export}$1#, \
 s#(.*\.xls$)#${url_prefix_export}$1#, \
 s#(.*\.js$)#${url_prefix_export}$1#, \
 s#(.*\.zip$)#${url_prefix_export}$1#, \
 s#(.*\.jpeg$)#${url_prefix_export}$1#, \
 s#(.*\.txt$)#${url_prefix_export}$1#, \
 s#^#${url_prefix_http}#
 ruleset.dynamic_externrules=*dynamicRules*, \
 s#(.*\.gif$)#$1#, \
 s#(.*\.jpg$)#$1#, \
 s#(.*\.pdf$)#$1#, \
 s#(.*\.css$)#$1#, \
 s#(.*\.doc$)#$1#, \
 s#(.*\.exe$)#$1#, \
 s#(.*\.xls$)#$1#, \
 s#(.*\.js$)#$1#, \
 s#(.*\.zip$)#$1#, \
 s#(.*\.jpeg$)#$1#, \
 s#(.*\.txt$)#$1#, \
 s#.*##

 

 When set to true the links in the static export that refer to pages in the static export will be relative instead of absolute. Enable this feature only if you use the standard ruleset.

relativelinks_in_export=true

 

我在更新了某个页面后，使用用户凡是访问，总是发现，opencms从exports/sites里面取页面，结果页面无法更新，无奈，只能把sites/mysite的属性设置为export=false这样是可以更新了，可是以后要静态导出，不知道会不会有问题。不知道有没有更好的办法。


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]]> Mon, 03 Mar 2008 16:05:43 +0800 http://cai555.javaeye.com/blog/166980 http://cai555.javaeye.com/blog/166980 current style 获得css属性 cai555 作者: cai555  链接：http://cai555.javaeye.com/blog/166395  发表时间: 2008年03月01日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

javascript 程序在第一次获得一个页面对象，比如var el = document.getElementById('div1'); 这个时候如果你取el.style.width，你可能得到的值为''值，除非你设置了el.style.width，比如el.style.width="200px";然后你再alert(el.style.width);这时才会弹出'200px'。可是css里面明明设置了这个值为什么没有值呢，原来初始值不再style.width里面，在currentstyle里面，调用以下代码，即使在第一次取style的值也是可行的（IE，FF测试通过）： 
<style type="text/css">
#test{
width: 100px;
height: 80px;
background-color: yellow;
}
</style>
<body>
<div id="test">This is some text</div>

<script type="text/javascript">

var mydiv=document.getElementById("test")

function getCurrentStyle(obj, cssproperty, csspropertyNS){
	if(obj.style[cssproperty]){
		return obj.style[cssproperty];
	}
	if (obj.currentStyle) {// IE5+
		return obj.currentStyle[cssproperty];
	}else if (document.defaultView.getComputedStyle(obj, null)) {// FF/Mozilla
		var currentStyle = document.defaultView.getComputedStyle(obj, null);
		var value = currentStyle.getPropertyValue(csspropertyNS);
		if(!value){//try this method
			value = currentStyle[cssproperty];
		}
		return value;
	}else if (window.getComputedStyle) {// NS6+
		var currentStyle = window.getComputedStyle(obj, "");
		return currentStyle.getPropertyValue(csspropertyNS);
	}
}
alert(getCurrentStyle(mydiv, "backgroundColor", "background-color")); //alerts "yellow"
</script>

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]]> Sat, 01 Mar 2008 17:00:31 +0800 http://cai555.javaeye.com/blog/166395 http://cai555.javaeye.com/blog/166395