公司服务器用来备份数据的盘q段旉׃(x)被备份文件占满，弄得我老是要登录到服务器去手工删除那些老的文gQ有时忘C׃(x)D盘I间不而无法备份?br /> 因ؓ(f)只要保留最q几天的备䆾Q如果可以做一个批处理让系l自动删除老备份文件就好了Q但是Windows的命令行和Linux的Shell比v来功能差了很多，到底行不行我自己也不清楚?br /> 于是上网查了一下各位大虑֏的帖子，再经q自q摸烦和尝试，发现只要q功夫q是能实现这个功能的?br /> 下面来看看我的实现方法?/p>
如果操作pȝ?Windows Server 2003 那就好办了，因ؓ(f)它有一个forfiles命o能够查找满指定条g的文Ӟ下面是这个命令的用法?br />
forfiles /p <目标目录?gt; /d <天数> /c <执行的命?gt;
看看列出的三个参数都有什么用处：(x)
/p 指定了要在哪个目录里查找文gQ默认是当前工作目录Q注意不能在目录名后面加斜杠?br />
/d 指定一个日期或天数Q用于比较文件的最后修Ҏ(gu)期是否符合条件?br />
/c Ҏ(gu)个找到的文g执行的命令?br />
?.要把在C盘根目录下最后修Ҏ(gu)期大于或{于2007q??日的文g复制到D盘根目录下：(x)
forfiles /p "c:" /d "2007-7-1" /c "cmd /c copy @path d:\"
?.删除在C盘backup目录下最后修Ҏ(gu)期在10天前的文Ӟ(x)
forfiles /p "c:\backup" /d -10 /c "cmd /c echo deleting @file ... && del /f @path"
看了上面的例子，觉得?Windows Server 2003 下面要删除老文件很单吧?br /> 但如果操作系l是 Windows 2000/XP 比较麻烦，因ؓ(f)它们没有forfiles命oQ只能靠自己写批处理来实C?br /> 下面是我写的批处理文件内容：(x)
@echo off
rem ******************************
rem * 按时间删除文件目录的批处?*
rem ******************************
rem 讄临时目录的\?br />
set tempDir=%tmp%\remove_%date:~0,10%
if not exist %tempDir% md %tempDir%
rem 讄处理日期的脚本文件的路径
set scriptFile=%tempDir%\get_date.vbs
rem 获得要保留的天数
set days=%~1
if "%days%" == "" goto printUsage
rem 获得目标目录的\?br />
set dirPath=%~2
if "%dirPath%" == "" set dirPath=.
rem 获得要操作的文g形式
set fileSpec=%~3
if "%fileSpec%" == "" set fileSpec=*.*
rem 生成计算日期的脚本文件ƈ获得删除的截止日?br />
echo d=date()-%1 > %scriptFile%
echo
s=right("0000" ^& year(d),4) ^& "-" ^& right("00" ^&
month(d),2) ^& "-" ^& right("00" ^& day(d),2) >>
%scriptFile%
echo wscript.echo s >> %scriptFile%
for /f %%i in ('cscript /nologo %scriptFile%') do set lastDate=%%i
rem 处理目标目录里的每个对象
for /f "tokens=1,2,3* delims=<> " %%i in ('dir "%dirPath%\%fileSpec%" /a /-c /tc') do call :proc "%%i" "%%j" "%%k" "%%l"
goto :done
rem 处理目标目录里对象的q程
:proc
rem 获得对象的创建日期ƈ判断是否为有效格?br />
set fileDate=%~1
echo %fileDate% | findstr "[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]" > nul
if errorlevel 1 goto end
rem 获得对象的类?br />
set fileType=%~3
if "%fileType%" == "" goto end
rem 获得对象的名U?br />
set fileName=%~4
if "%fileName%" == "" goto end
if "%fileName%" == "." goto end
if "%fileName%" == ".." goto end
if "%fileName%" == "字节" goto end
if "%fileName%" == "可用字节" goto end
rem 判断对象日期是否于或等于删除的截止日期
if "%fileDate:~0,10%" leq "%lastDate%" (
echo deleting "%fileName%" ...
if "%fileType%" == "DIR" ( rd /s /q "%dirPath%\%fileName%" ) else ( del /q /f "%dirPath%\%fileName%" )
)
goto end
:error
echo An error occurred during backuping.
:done
rd /s /q %tempDir%
goto end
:printUsage
echo Usage: %0 ^<Days^> [Work directory] [Target file specification (can include wildcards)]
goto end
:end
q个批处理的语句很多Q我表达能力有限Q懒得一一解释了?br /> 主要是利用Windows的脚本功能来计算要删除文件的截止日期Q然后for加dir命o来提取文件的日期q行判断?/p>
关于forfiles和for的详l信息，可以在Windows的帮助与支持中找到?nbsp;
?
forfiles指o介紹
?WINDOWS ? 若是要將某些檔案做什D理的方式, 我通常使用 VBS ?SCRIPT 來操? 不過其實還有更方便簡L(fng)Ҏ(gu), 看到這篇文章 windows server下的檔案處理E式Forfiles , 原來其實?windows 下還有個這麼方便的檔案列舉工?一般最常用的是刪除 log 檔案, 指定目錄, 並指令時?(例如保留一? 一週前的刪?, 可以利用這個指令進行刪除:
forfiles /p c:\temp /s /m *.log /d -7 /c "cmd /c del @FILE"
或是列舉出指定目錄下的檔?非目?的名E列?
forfiles /p c:\ /c "cmd /c if @isdir==FALSE echo @FILE"
請注意上面的 "FALSE" 要大?
再來看看微軟的官方說? Forfiles
以下列出該指令的參數說明: (利用 forfiles /? 取得)
FORFILES [/P pathname] [/M searchmask] [/S]
[/C command] [/D [+ | -] {yyyy/MM/dd | dd}]
描述:
選取一個檔?(或一i檔?Q並在檔案上
埯命o。這對Ҏ(gu)工作很有q助?br />
參數清單:
/P pathname 表示要開始搜的路徑?br /> 預設資料夾是目前?br /> 目錄 (.)?br />
/M searchmask Ҏ(gu) searchmask 搜尋檔案?br /> 預設?searchmask ?'*'?br />
/S 指示 forfiles 遞迴搜尋
子目錄。例?"DIR /S"?br />
/C command 表示每個檔案要埯的命令?br /> 命o字串應該包含在雙括號
之間?
預設的命令是 "cmd /c echo @file"?br />
下列變數可以使用於命令字?
@file - 傛_檔案的名E?br /> @fname - 只傳回檔案的名稱Q?br /> 不傳附檔名?br /> @ext - 只傳回檔案的
附檔名?br /> @path - 傛_檔案的完整\徑?br /> @relpath - 傛_檔案的相?br /> 路徑?br /> @isdir - 如果檔案型是目錄的話，
傛_ "TRUE"Q如果是檔案
的話Q傳?"FALSE"?br /> @fsize - 傛_檔案的大，
單位是位元組?br /> @fdate - 傛_檔案上次修改?br /> 日期?br /> @ftime - 傛_檔案上次修改
的時間?br />
要在命o列中包含Ҏ(gu)字元的話Q?br /> 請?0xHH 格式的十?br /> 進位字元?(例如 0x09 代表 tab)?br /> 內部?CMD.exe 命o應該
?"cmd /c" 埯?br />
/D date 選取檔案上次修改的時間大方{?br /> {於 (+) 或小於或{於 (-)?br /> 使用 "yyyy/MM/dd" 格式表示指定的日?
或選取檔案日期上ơ修?br /> 的時間大於或{於 (+)
目前的日期再加上"dd" 天?br /> 於或等?(-) 目前的日期減?"dd" 天?br /> 有效?"dd" 可以是介?br /> 0 - 32768 之間的數字?br /> 如果未指定，"+" 被視為預設W號?br />
/? 示這個說明訊息?br />
例:
FORFILES /?
FORFILES
FORFILES /P C:\WINDOWS /S /M DNS*.*
FORFILES /S /M *.txt /C "cmd /c type @file | more"
FORFILES /P C:\ /S /M *.bat
FORFILES /D -30 /M *.exe
/C "cmd /c echo @path 0x09 was changed 30 days ago"
FORFILES /D 2001/01/01
/C "cmd /c echo @fname is new since Jan 1st 2001"
FORFILES /D +2008/7/13 /C "cmd /c echo @fname is new today"
FORFILES /M *.exe /D +1
FORFILES /S /M *.doc /C "cmd /c echo @fsize"
FORFILES /M *.txt /C "cmd /c if @isdir==FALSE notepad.exe @file"
]]>
| 2007-10-18 16:16:46 |
|
CSV其实是COMMA SEPARATED VALUE的羃写，出现在案ȝ中的案cd是「逗号分格」，依计机原来的设定，如果直接炚w该案Q计机以EXCEL的模式开启该档案?/span> 但徏议?zhn)千万不要q么做，因ؓ(f)CSV如果以EXCEL开启，׃计算机档案数据{换的原因Q会(x)其CRC之数值改做科学记h式储存，而造成案中的CRC值发生错误?/span> q也是笔者初庐时所得到的惨痛经验，但如果想一H?/span>CSV的真实面貌Q笔者徏议?zhn)?/span>使用WORDPAD或是C本（NOTEQ来开启，再则先另存新后?/strong>EXCEL开?/strong>Q也是方法之一?/span> 开启后?/span>CSV档包含了四或五个字段Q部分）Q由左至叛_别记载着Q文件名UͼXXXX.JPGQ、案大（?/span>BYTE为单位）?/span>CRC32|八个英文字母或数字组成）、案\径（案储存的子目录名称Q和档案内容描述Q一般来说都是明星的英文姓名甚或是专辑名Uͼ也可能空白）?/span> 而其中第四栏「案\径」因为每个h储存整理图的方式不同，所以本栏通常不存在，而一般有含有「档案\径」这栏的CSV，又称?/span>ECSV案 CSV?span lang="EN-US">Comma Separate Values的羃写，现在常见到这U格式的文gQ例?span lang="EN-US">Google adsense的自定义报表有q种格式。一般来?span lang="EN-US">CSV格式是将数据用引?span lang="EN-US">,逗号分开的文件格?span lang="EN-US">. The CSV (”Comma Separated Value”) file format is often used to exchange data between disparate applications. The file format, as it is used in Microsoft Excel, has become a pseudo standard throughout the industry, even among non-Microsoft platforms. CSV文g格式l常被用于{?u>不同内容Q?span lang="EN-US">disparate applicationsQ?/u>之间的数据。这U文件格式，随着其应用于Microsoft ExcelQ它在工业甚x?span lang="EN-US">Microsoft q_已经成ؓ(f)一?u>不符合实际（pseudoQ?/u>的标准了 As is the case with most exchange formats since XML, CSV files have become somewhat of a legacy format. New applications that wish to include an export format will generally use XML today (though there may be exceptions). In legacy systems though (pre-XML), CSV files had indeed become a de facto industry standard. Just as there are still billions of lines of CoBOL code in use today that need to be maintained, support for a legacy standard such as CSV is likely to be required long after it has stopped being implemented in new designs. 自从XML?/span>CSV文g成ؓ(f)一U?u>传统格式后，它就是很多交换格式的一U现象了。（As is the case with most exchange formats since XML, CSV files have become somewhat of a legacy format.Q?/span>渴望包含一U输出格式的新的应用主要运用今天的XMLQ尽也可能有一些例外）。在传统pȝ中，虽然CSV文g已经实成ؓ(f)一U?/span>de facto企业标准了。尽今天还有数十亿?/span>CoBOL代码在应用，但我们确实需要一U传l格式来支持。就?/span>CSV是在它已l停止被应用于新的设计之后才被逐渐接受的?/span> 具体来说Q格式如下：(x)
windowsq_下一般将CSV文g定义?span lang="EN-US">xml后缀Q用文本~辑器就可以打开?span lang="EN-US"> csv文g的特点主要有以下几个Q?/span> |
]]>
//分页昄
public class Pager {
private int currentPage; //当前?/span>
private int pageSize = 5; //每页昄的记录数
private int totalSize; //总记录数
private int totalPage; //总页?br />
private boolean hasFirst; //是否有首?/span>
private boolean hasPrevious; // 是否有上一?/span>
private boolean hasNext; // 是否有下一?/span>
private boolean hasLast; // 是否有尾?br />
/**构造函数必M入两个参数当前页和总记录数
Ҏ(gu)当前可以判断是否有上一下一늭{?
Ҏ(gu)总记录数可以出总页?/
public Pager(int currentPage,int totalSize){
this.currentPage = currentPage;
this.totalSize = totalSize;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public boolean isHasFirst() {
if(currentPage == 1)
return false;
return true;
}
public void setHasFirst(boolean hasFirst) {
this.hasFirst = hasFirst;
}
public boolean isHasLast() {
if(currentPage == getTotalPage())
return false;
return true;
}
public void setHasLast(boolean hasLast) {
this.hasLast = hasLast;
}
public boolean isHasNext() {
if(isHasLast())
return true;
return false;
}
public void setHasNext(boolean hasNext) {
this.hasNext = hasNext;
}
public boolean isHasPrevious() {
if(isHasFirst())
return true;
return false;
}
public void setHasPrevious(boolean hasPrevious) {
this.hasPrevious = hasPrevious;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getTotalPage() {
//计算出总页?/span>
totalPage = totalSize / pageSize;
if(totalSize % pageSize != 0)
totalPage++;
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getTotalSize() {
return totalSize;
}
public void setTotalSize(int totalSize) {
this.totalSize = totalSize;
}
}
]]>
<script language="javascript">
function checkValid(form)
{
document.getElementById("submitbutton").disabled=true;
return true;
}
</script>
</head>
<body>
<form action="" method="post" >
<input type="submit" value="提交" id="submitbutton" onclick="return checkValid(this)"/>
</form>
</body>
</html>
]]>
http://www.eclipse.org/
MyEclipse 官方主页
http://www.myeclipseide.com/
Hibernate 官方主页
http://www.hibernate.org/
Spring 官方主页
http://www.springframework.org/
Struts 官方主页
http://struts.apache.org/
Webwork 官方主页
http://www.opensymphony.com/
Jakarta 官方主页
http://jakarta.apache.org/
MySQL 官方主页
http://www.mysql.com/
JUnit 官方主页
http://www.junit.org/
jakarta commons
http://commons.apache.org/lang/api-release/index.html
AspectJ AJDT
http://www.eclipse.org/ajdt/
CVS
http://www.march-hare.com/cvspro
Apache HTTP Server
http://httpd.apache.org/download.cgi
Sitemesh
http://www.opensymphony.com/sitemesh/download.action
]]>
Redirect指示WEB客户端进行一ơ新的请求。请求的资源可以在同一个应用中Q也可以不在。原来的h参数不再保留Q原来的h上下文也?x)消失?
]]>
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dgut.ke.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
* <p>Example filter that sets the character encoding to be used in parsing the
* incoming request, either unconditionally or only if the client did not
* specify a character encoding. Configuration of this filter is based on
* the following initialization parameters:</p>
* <ul>
* <li><strong>encoding</strong> - The character encoding to be configured
* for this request, either conditionally or unconditionally based on
* the <code>ignore</code> initialization parameter. This parameter
* is required, so there is no default.</li>
* <li><strong>ignore</strong> - If set to "true", any character encoding
* specified by the client is ignored, and the value returned by the
* <code>selectEncoding()</code> method is set. If set to "false,
* <code>selectEncoding()</code> is called <strong>only</strong> if the
* client has not already specified an encoding. By default, this
* parameter is set to "true".</li>
* </ul>
*
* <p>Although this filter can be used unchanged, it is also easy to
* subclass it and make the <code>selectEncoding()</code> method more
* intelligent about what encoding to choose, based on characteristics of
* the incoming request (such as the values of the <code>Accept-Language</code>
* and <code>User-Agent</code> headers, or a value stashed in the current
* user's session.</p>
*
* @author Craig McClanahan
* @version $Revision: 466607 $ $Date: 2006-10-21 17:09:50 -0600 (Sat, 21 Oct 2006) $
*/
public class SetCharacterEncodingFilter implements Filter {
// ----------------------------------------------------- Instance Variables
/**
* The default character encoding to set for requests that pass through
* this filter.
*/
protected String encoding = null;
/**
* The filter configuration object we are associated with. If this value
* is null, this filter instance is not currently configured.
*/
protected FilterConfig filterConfig = null;
/**
* Should a character encoding specified by the client be ignored?
*/
protected boolean ignore = true;
// --------------------------------------------------------- Public Methods
/**
* Take this filter out of service.
*/
public void destroy() {
this.encoding = null;
this.filterConfig = null;
}
/**
* Select and set (if specified) the character encoding to be used to
* interpret request parameters for this request.
*
* @param request The servlet request we are processing
* @param result The servlet response we are creating
* @param chain The filter chain we are processing
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
// Conditionally select and set the character encoding to be used
if (ignore || (request.getCharacterEncoding() == null)) {
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
}
// Pass control on to the next filter
chain.doFilter(request, response);
}
/**
* Place this filter into service.
*
* @param filterConfig The filter configuration object
*/
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
}
// ------------------------------------------------------ Protected Methods
/**
* Select an appropriate character encoding to be used, based on the
* characteristics of the current request and/or filter initialization
* parameters. If no character encoding should be set, return
* <code>null</code>.
* <p>
* The default implementation unconditionally returns the value configured
* by the <strong>encoding</strong> initialization parameter for this
* filter.
*
* @param request The servlet request we are processing
*/
protected String selectEncoding(ServletRequest request) {
return (this.encoding);
}
}
q需要在web.xml中配|相关信?br><!-- Example filter to set character encoding on each request -->
<filter>
<filter-name>Set Character Encoding</filter-name>
<filter-class>dgut.ke.filter.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>gbk</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Set Character Encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
]]>