我想作一个文件目录选择框，想看看大家是怎么实现的？

Question

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【helloruby】截止到2008-07-23 16:09:36的历史汇总数据(不包括此帖)：
发帖的总数量:17                       发帖的总分数:440                      每贴平均分数:25                       
回帖的总数量:9                        得分贴总数量:0                        回帖的得分率:0%                       
结贴的总数量:16                       结贴的总分数:407                      
无满意结贴数:2                        无满意结贴分:23                       
未结的帖子数:1                        未结的总分数:33                       
结贴的百分比:94.12 %               结分的百分比:92.50 %                  
无满意结贴率:12.50 %               无满意结分率:5.65  %                  
值得尊敬

Answer 1

JFileChooser就可以
JFileChooser fileChooser = new JFileChooser("F:\\");
fileChooser.setDialogTitle("Select File to Save");
if (fileChooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
    String file = fileChooser.getSelectedFile();
}
file就是得到的绝对路径了

Answer 2

xx楼上，这样恐怕不行，JFileChooser是用于j2se的吧，我想在jsp页面上有这么一个选择框（按扭点击时打开它，确定后要得到所选择的文件目录名提交到后台）

Answer 3

用STRUTS的the file 标签就可以实现文件上传,下在的话用一个超级连接.
下载:java 代码public class DownLoadAction extends Action {    
   
    // --------------------------------------------------------- Instance    
    // Variables    
    BufferedInputStream bis = null;    
   
    BufferedOutputStream bos = null;    
   
    // --------------------------------------------------------- Methods    
   
    /**   
     * Method execute   
     *    
     * @param mapping   
     * @param form   
     * @param request   
     * @param response   
     * @return ActionForward   
     */   
    public ActionForward execute(ActionMapping mapping, ActionForm form,    
            HttpServletRequest request, HttpServletResponse response)    
            throws Exception {    
   
        String downloadPath = servlet.getInitParameter("file-upload");    
        String fileName = new String(request.getParameter("filename").getBytes(    
                "ISO-8859-1"), "GB2312");    
        response.reset();    
        response.setContentType("application/x-msdownload");    
        response.addHeader("Content-Disposition", "attachment;   filename=\""   
                + new String(fileName.getBytes("GB2312"), "ISO-8859-1") + "\"");    
   
        try {    
            bis = new BufferedInputStream(new FileInputStream(downloadPath    
                    + "/" + fileName));    
            bos = new BufferedOutputStream(response.getOutputStream());    
   
            byte[] buff = new byte[20480];    
            while ((bis.read(buff, 0, buff.length)) != -1) {    
                bos.write(buff, 0, buff.length);    
            }    
            bos.flush();    
        } catch (Exception e) {    
            e.printStackTrace();    
        } finally {    
            bos.close();    
            bis.close();    
        }    
   
        return mapping.findForward("downloadfile");    
    }    
   
}struts-configxml 代码
<?xml version="1.0" encoding="UTF-8"?>   
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">   
   
<struts-config>   
   
    <form-beans>   
        <form-bean name="uploadForm" type="com.capinfo.form.upload.UploadForm" />   
    </form-beans>   
   
    <global-forwards>   
        <forward name="welcome" path="/Welcome.do" />   
        <forward name="login" contextRelative="true" path="/login/Login.do" redirect="true" />   
        <forward name="upload" path="/page/upload.jsp" redirect="true"/>   
    </global-forwards>   
   
    <action-mappings>   
   
        <action path="/Welcome" type="org.apache.struts.actions.ForwardAction" parameter="/page/Welcome.jsp"></action>   
   
        <action path="/upload" type="com.capinfo.action.upload.UploadAction" name="uploadForm" input="/page/upload.jsp" scope="request">   
            <forward name="success" path="/page/upload.jsp" />   
        </action>   
            
    <action path="/downLoad"     
            type="com.yourcompany.struts.action.DownLoadAction"     
            input="/page/upload.jsp"   
            scope="request"   
            >   
        <forward name="downloadfile" path="/page/upload.jsp" />   
    </action>   
        
    </action-mappings>   
   
    <message-resources parameter="com.yourcompany.struts.ApplicationResources" />   
   
</struts-config> 

Answer 4

主要用于选择 但可以变相实现
<html>
    <head>
        <title> New Document </title>
    </head>
    <body>
        <input type="file" id="file" style="display:none">
        <input type="button" value="click" onClick="ok()">
    </body>
    <script language="JavaScript">
        <!--        function ok(){
            var s = document.getElementById("file");
            s.click();
            var str = s.value;
            alert(str);
        }
        //-->
    </script>
</html>

Answer 5

xx楼上，这样恐怕不行，file是选择一个上传文件的选择框，虽然我可以截取它的目录，但操作上还是在选择一个文件，这样并不直观（操作上就是选择一个文件夹目录）

Answer 6

<input  type=button  value=''  name="ccc"  onclick='window.document.execCommand("open")' >

Answer 7

package com.struts.form;
import java.io.OutputStream;
import java.util.List;import jxl.Workbook;
import jxl.write.WritableFont;
public class ExcelBean {

public String expordExcel(List list,OutputStream os )throws Exception
{

jxl.write.WritableWorkbook wbook=Workbook.createWorkbook(os);//建立Excel文件
     String title="测试数据";
     jxl.write.WritableSheet sheet=wbook.createSheet("第一页", 0);//为文件的sheet设置名字
     //设置标题  start
       jxl.write.WritableFont wfont=new  jxl.write.WritableFont(WritableFont.ARIAL,16,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLACK);  //设置标题的格式
       jxl.write.WritableCellFormat wcformat=new  jxl.write.WritableCellFormat(wfont);
       jxl.write.Label wlabel;
       wlabel=new jxl.write.Label(1,0,title,wcformat);//把标题放到excel文件中‘2’代表列，‘0’代表行，title是内容，wcformat是格式
 sheet.addCell(wlabel);
 //设置标题 end
 //设置表头  start
                 wfont=new jxl.write.WritableFont(WritableFont.ARIAL,14,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.DARK_GREEN);  //设置表头的格式
                 wcformat=new jxl.write.WritableCellFormat(wfont);
                 wlabel=new jxl.write.Label(0,1,"TID",wcformat);
                 sheet.addCell(wlabel);
                 wlabel=new jxl.write.Label(2,1,"Tname",wcformat);
                 sheet.addCell(wlabel);
 //设置表头  end
                 
             //输出数据格式的设置  start
                 
                 wfont=new jxl.write.WritableFont(WritableFont.ARIAL,14,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLACK);  //设置表头的格式
                 wcformat=new jxl.write.WritableCellFormat(wfont);
                 for(int i=0;i<list.size();i++)
                 {
                  TestForm tf=(TestForm)list.get(i);
                  wlabel=new jxl.write.Label(0,i+2,tf.getTid(),wcformat);
                  sheet.addCell(wlabel);
                  wlabel=new jxl.write.Label(2,i+2,tf.getTname(),wcformat);
                  sheet.addCell(wlabel);
                 }
                 wbook.write();
                 wbook.close();
             //输出数据格式的设置  end
 return "success";
}}

Answer 8

package com.struts.form;
import java.io.OutputStream;
import java.util.List;import jxl.Workbook;
import jxl.write.WritableFont;
public class ExcelBean {

public String expordExcel(List list,OutputStream os )throws Exception
{

jxl.write.WritableWorkbook wbook=Workbook.createWorkbook(os);//建立Excel文件
     String title="测试数据";
     jxl.write.WritableSheet sheet=wbook.createSheet("第一页", 0);//为文件的sheet设置名字
     //设置标题  start
       jxl.write.WritableFont wfont=new  jxl.write.WritableFont(WritableFont.ARIAL,16,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLACK);  //设置标题的格式
       jxl.write.WritableCellFormat wcformat=new  jxl.write.WritableCellFormat(wfont);
       jxl.write.Label wlabel;
       wlabel=new jxl.write.Label(1,0,title,wcformat);//把标题放到excel文件中‘2’代表列，‘0’代表行，title是内容，wcformat是格式
 sheet.addCell(wlabel);
 //设置标题 end
 //设置表头  start
                 wfont=new jxl.write.WritableFont(WritableFont.ARIAL,14,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.DARK_GREEN);  //设置表头的格式
                 wcformat=new jxl.write.WritableCellFormat(wfont);
                 wlabel=new jxl.write.Label(0,1,"TID",wcformat);
                 sheet.addCell(wlabel);
                 wlabel=new jxl.write.Label(2,1,"Tname",wcformat);
                 sheet.addCell(wlabel);
 //设置表头  end
                 
             //输出数据格式的设置  start
                 
                 wfont=new jxl.write.WritableFont(WritableFont.ARIAL,14,WritableFont.BOLD,false,jxl.format.UnderlineStyle.NO_UNDERLINE,jxl.format.Colour.BLACK);  //设置表头的格式
                 wcformat=new jxl.write.WritableCellFormat(wfont);
                 for(int i=0;i<list.size();i++)
                 {
                  TestForm tf=(TestForm)list.get(i);
                  wlabel=new jxl.write.Label(0,i+2,tf.getTid(),wcformat);
                  sheet.addCell(wlabel);
                  wlabel=new jxl.write.Label(2,i+2,tf.getTname(),wcformat);
                  sheet.addCell(wlabel);
                 }
                 wbook.write();
                 wbook.close();
             //输出数据格式的设置  end
 return "success";
}}
/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.struts.action;import java.io.OutputStream;
import java.util.List;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;import com.business.TestBusiness;
import com.struts.form.ExcelBean;
/** 
 * MyEclipse Struts
 * Creation date: 03-20-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class TestDownloadAction extends Action {
/*
 * Generated Methods
 */ /** 
 * Method execute
 * @param mapping
 * @param form
 * @param request
 * @param response
 * @return ActionForward
 */
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
// TODO Auto-generated method stub
String filename="mytest";//文件名称
 TestBusiness tb=new TestBusiness();
 List list=tb.getData();//导出的数据集合
 try {
OutputStream os=response.getOutputStream();//获取输出流
response.reset();
response.setHeader("Content-disposition", "attachment; filename=" + filename + ".xls");//设定输出文件头
response.setContentType("application/msexcel");//设定输出类型
ExcelBean eb=new ExcelBean();

eb.expordExcel(list, os);

} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return mapping.findForward("success");
}
}
<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-tiles" prefix="tiles" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-template" prefix="template" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-nested" prefix="nested" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html locale="true">
  <head>
    <html:base />
    
    <title>Download.jsp</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">    
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->  </head>
  
  <body>
    <html:form action="/testDownload">
    <html:submit value="daochu"></html:submit>
    </html:form>
  </body>
</html:html>

Answer 9

您好  真是巧了   我也做了一个项目 同样是导出excel需要选择路径  问了很多人都不知道   如果您得到答案的话 可以告诉我吗？我的QQ是  583090220 (WUSHEN)