这是我在学习JSP中看到的其中一份很好的帖,所以就发上来了~~
jsp获取当前目录下的文件和目录,获取windows盘符
(一)获取当前目录下的文件和目录知识点1 file对象的应用
2 listFiles()方法
3 isDirectory()方法,isFile()方法 判断是否为目录或是文件
4转换字符串方法toString
(1)
创建一个file对象dir,
然后用listFiles()方法返回当前目录下所有文件
String path=request.getRealPath("/");
File dir=new File(path);
File file[]=dir.listFiles();
(2)循环判断所返回的是否为目录,并显示出来
目录有:
<%
for(int i=0;i<file.length;i++)
{
if(file.isDirectory())//
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
(3)
循环判断所返回的是否为目录,并显示出来
文件有
<%
for(int i=0;i<file.length;i++)
{
if(file.isFile())
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
程序
<%@ page contentType="text/html;charset=GB2312"%><%@ page import="java.io.*"%>
*本站禁止HTML标签噢*
*本站禁止HTML标签噢* </title>
*本站禁止HTML标签噢*
<%
String path=request.getRealPath("/");
File dir=new File(path);
File file[]=dir.listFiles();//用file对象的listFiles()方法返回指定目录下的文件
%>
当前<%=path%> *本站禁止HTML标签噢*
目录有:<%
for(int i=0;i<file.length;i++)
{
if(file.isDirectory())
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
*本站禁止HTML标签噢* 文件有:
<%
for(int i=0;i<file.length;i++)
{
if(file.isFile())
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
</body>
</html>
(二)获取windows盘符<%@ page contentType="text/html;charset=GB2312"%><%@ page import="java.io.*"%>
*本站禁止HTML标签噢*
*本站禁止HTML标签噢*
<%
File[] roots=File.listRoots();
for(int i=0;i<roots.length;i++)
{
out.print(" *本站禁止HTML标签噢* "+roots.getPath());
}
%>
</body>
</html>
(三)将两个程序合并<%@ page contentType="text/html;charset=GB2312"%><%@ page import="java.io.*,java.util.*,java.net.*" %>
<%!
private final static int languageNo=0; //语言版本,0 : 中文; 1:英文
String[] strDrivers = {"驱动器","Drivers"};
String[] strCurrentFolder= {"当前目录","Current Folder"};
%>
*本站禁止HTML标签噢*
*本站禁止HTML标签噢*
<%
String path=request.getRealPath("/");
File dir=new File(path);
File file[]=dir.listFiles();//用file对象的listFiles()方法返回指定目录下的文件
StringBuffer sb=new StringBuffer(strDrivers[languageNo] + " : ");
File roots[]=File.listRoots();
for(int i=0;i<roots.length;i++)
{
sb.append(" <a href=\"javascript:doForm('','"+roots+"">");
sb.append(roots+"</a> ");
}
//out.println(sb);
%>
<%
//out.print("<table border='1' width='100%' bgcolor='#FFFFFF' cellspacing=0 cellpadding=5 bordercolorlight=#000000 bordercolordark=#FFFFFF> *本站禁止HTML标签噢* *本站禁止HTML标签噢* "+strCurrentFolder[languageNo]+": *本站禁止HTML标签噢* *本站禁止HTML标签噢* "+path+"</td> *本站禁止HTML标签噢* "+sb+"</td></tr></table>");
%>
<table border='1' width='100%' bgcolor='#FFFFFF' cellspacing=0 cellpadding=5 bordercolorlight=#000000 bordercolordark=#FFFFFF>
*本站禁止HTML标签噢*
<td width='40%'><%=strCurrentFolder[languageNo]%>: *本站禁止HTML标签噢* <%=path %></td><td width='60%'><%=strDrivers[languageNo] %>:<%=sb%></td></tr>
</table>
<table border='1' width='100%' bgcolor='#FFFFFF' cellspacing=0 cellpadding=5 bordercolorlight=#000000 bordercolordark=#FFFFFF>
*本站禁止HTML标签噢*
<td width='40%'>目录有:
<%
for(int i=0;i<file.length;i++)
{
if(file.isDirectory())
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
</td>
<td width='60%'>文件有:
<%
for(int i=0;i<file.length;i++)
{
if(file.isFile())
out.print(" *本站禁止HTML标签噢* "+file.toString());
}
%>
</td>
</tr>
</table>
</body>
</html>
如图我们进一步的优化,实现<%@ page contentType="text/html; charset=GBK" %>< import="java.io.*,java.util.*,java.net.*" %>
*本站禁止HTML标签噢*
<style type="text/css">
td,select,input,body{font-size:9pt;}
A { text-decoration: none }
#tablist{
padding: 5px 0;
margin-left: 0;
margin-bottom: 0;
margin-top: 0.1em;
font:9pt;
}
#tablist li{list-style: none;
display: inline;
margin: 0;
}
#tablist li a{padding: 3px 0.5em;
margin-left: 3px;
border: 1px solid ;
background: #FFFFFF;
}
#tablist li a:link, #tablist li a:visited{color: navy;
}
#tablist li a.current{background: #FFFFFF;
}
#tabcontentcontainer{width: 100%;
padding: 5px;
border: 1px solid black;
}
.tabcontent{display:none;
}
</style></head>
<%!
private final static int languageNo=1; //语言版本,0 : 中文; 1:英文String[] strCurrentFolder= {"当前目录","Current Folder"};
String[] strDrivers = {"驱动器","Drivers"};
String[] strFileName = {"文件名称","File Name"};
String[] strFileSize = {"文件大小","File Size"};
String[] strLastModified = {"最后修改","Last Modified"};
String[] strFileOperation= {"文件操作","Operations"};
String[] strFileEdit = {"修改","Edit"};
String[] strFileDown = {"下载","Download"};
String[] strFileCopy = {"复制","Move"};
String[] strFileDel = {"删除","Delete"};
String getDrivers(){
StringBuffer sb=new StringBuffer(": ");
File roots[]=File.listRoots();
for(int i=0;i<roots.length;i++)
{
sb.append("<a href='?path="+roots+"'>");
sb.append(roots+"</a> ");
}
return sb.toString();
}
String formatPath(String p){
StringBuffer sb=new StringBuffer();
for (int i = 0; i < p.length(); i++)
{
if(p.charAt(i)=='\\')
{
sb.append("[url=]\\\\[/url]");
}
else
{
sb.append(p.charAt(i));
}
}
return sb.toString();
}
public static String toChinese(String str)
{
try{
if(str==null)
{
return "";
}else
{
str=new String(str.getBytes("ISO8859_1"),"GBK");
return str;
}
}catch(Exception e)
{
return "";
}
}
%>
<%
request.setCharacterEncoding("gb2312");
String strDir =toChinese( request.getParameter("path"));
if(strDir==null||strDir.length()<1)
{
strDir = request.getRealPath("/");
}
StringBuffer sb=new StringBuffer("");StringBuffer sbFile=new StringBuffer("");
try
{
File objFile = new File(strDir);File list[] = objFile.listFiles();
if(objFile.getAbsolutePath().length()>3)
{
sb.append(" *本站禁止HTML标签噢* <td > </td> *本站禁止HTML标签噢* <a href='?path="+formatPath(objFile.getParentFile
().getAbsolutePath())+"'>");sb.append("To ParentFile</a> *本站禁止HTML标签噢* - - - - </td></tr>\r\n");
}
for(int i=0;i<list.length;i++)
{
if(list.isDirectory())
{
sb.append(" *本站禁止HTML标签噢* *本站禁止HTML标签噢* </td> *本站禁止HTML标签噢* ");
sb.append("<a href='?path="+formatPath(list.getAbsolutePath())+"'>"+list.getName()+"</a>");
sb.append("</td></tr>");
}else
{
String strLen="";
String strDT="";
long lFile=0;
lFile=list.length();
if(lFile>1000000){
lFile=lFile/1000000;
strLen="" + lFile + " M";
}
else if(lFile>1000)
{
lFile=lFile/1000;
strLen="" + lFile + " K";
}
else
{
strLen="" + lFile + " Byte";
}
Date dt=new Date(list.lastModified());
strDT=dt.toLocaleString();
sbFile.append(" *本站禁止HTML标签噢* *本站禁止HTML标签噢* ");
sbFile.append(""+list.getName());
sbFile.append("</td> *本站禁止HTML标签噢* ");
sbFile.append(""+strLen);
sbFile.append("</td> *本站禁止HTML标签噢* ");
sbFile.append(""+strDT);
sbFile.append("</td> *本站禁止HTML标签噢* ");
sbFile.append(" <a href=>");
sbFile.append(strFileEdit[languageNo]+"</a> ");
sbFile.append(" <a href=>");
sbFile.append(strFileDown[languageNo]+"</a> ");
sbFile.append(" <a href=>");
sbFile.append(strFileCopy[languageNo]+"</a> ");
sbFile.append(" <a href=>");
sbFile.append(strFileDel[languageNo]+"</a> ");
sbFile.append("</td></tr>\r\n");
}
}
}
catch(Exception e)
{
out.println("<font color=red>error: "+e.toString()+"</font>");
}
%>
<table border='1' width='100%' bgcolor='#FFFFFF' cellspacing=0 cellpadding=5 bordercolorlight=#000000 bordercolordark=#FFFFFF>
*本站禁止HTML标签噢*
<td width='20%'><%=strCurrentFolder[languageNo]%>: *本站禁止HTML标签噢* <%=strDir %></td><td width='70%'><%=strDrivers[languageNo] %><%=getDrivers()%>
</td>
</tr>
</table>
<table border='1' width='100%' bgcolor='#FFFFFF' cellspacing=0 cellpadding=5 bordercolorlight=#000000 bordercolordark=#FFFFFF>
*本站禁止HTML标签噢*
<td width='20%'valign="top">
<table >
*本站禁止HTML标签噢* *本站禁止HTML标签噢* <%=sb%></td>
</tr>
</table>
</td>
<td width='70%'align="center" valign="top">
<table width="100%"border="1" cellspacing="1" cellpadding="4" bordercolorlight="#000000" bordercolordark="#FFFFFF">
*本站禁止HTML标签噢*
<td width="26%" align="center"><%=strFileName[languageNo] %></td>
<td width="19%" align="center"><%=strFileSize[languageNo] %></td>
<td width="29%" align="center"><%=strLastModified[languageNo] %></td>
<td width="26%" align="center"><%=strFileOperation[languageNo] %></td></tr>
*本站禁止HTML标签噢* <td width="25%" align="center"><%=sbFile %></td></tr>
</table>
</td>
</tr>
</table>
来源于:http://hi.baidu.com/forhack/item/d071a5b6a8d38b95184697cc
欢迎大家一起交流心得。我是JSP初学者
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