如何在jsp页中实现浏览本地硬盘文件夹的功能

Question

类似type="file"不过不是打开文件夹，而是打开目录。点击保存按钮的。

Answer 1

<input type="file" name="mf">
<input type="submit" value="上传">

Answer 2

response.setContentType("application/x-msdownload");
response.setHeader("Content-disposition","attachment; filename=测试的.txt");

Answer 3

input[file] 不能选择目录，只能选择文件后 把文件名去掉来取得目录

Answer 4

你是说上传一个文件夹目录中的所有文件吧。这个好像要用flash吧。

Answer 5

希望有“保存文件”那样的对话框。   
－－－－－－－－－－－－－－－－－－－ 这不就是弹出下载文件对话框吗 写个servlet调用我这个方法 （PS:非本人所写，该方法由layueer写的）
本人拿来借用而已 private   void   down_FILE(HttpServletRequest   req,HttpServletResponse   resp,String   szPath_file,String   szFile_name) 
        { 
                String     szServer_path= " "; 
                szServer_path=szPath_file; 
                BufferedInputStream     bis   =   null; 
                BufferedOutputStream   bos   =   null; 
                try 
                { 
                      //和java.io.PrintWriter   out   不能共用 
                        ServletOutputStream   outm   =   null; 
                        try 
                        { 
                                outm=resp.getOutputStream(); 
                        } 
                        catch(Exception   e) 
                        { 
                                  exceptionOutput(resp,e.toString()+ "   abcd "); 
                        } 
                        resp.setContentType(   "application/octet-stream "   );   //   MIME   type   for   exe 
                        resp.setHeader( "Content-disposition ", "attachment;   filename= "+szFile_name);//显示的随机文件名，可以用这个保存或另起一个名 
                        //   Open   file 
                        File   f1; 
                        szServer_path   =   szServer_path+ "filename.xls "   ; 
                        try 
                        { 
                                f1=new   File(szServer_path); 
                                FileInputStream   fis=new   FileInputStream(f1); 
                                bis   =   new   BufferedInputStream(fis); 
                                bos   =   new   BufferedOutputStream(outm); 
                                byte[]   buff   =   new   byte[2048]; 
                                int   bytesRead; 
                                while(-1   !=   (bytesRead   =   bis.read(buff,   0,   buff.length))) 
                                { 
                                        bos.write(buff,   0,   bytesRead); 
                                }                         } 
                        catch(Exception   e) 
                        { 
                        } 
                } 
                finally 
                { 
                        try 
                        { 
                                if   (bis   !=   null)   bis.close(); 
                                if   (bos   !=   null)   bos.close(); 
                        } 
                        catch(IOException   e) 
                        { 
                        } 
                } 
        }

Answer 6

servlet不能用啊，我用的struts2框架，会被拦截的

Answer 7

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
上传、下载你可以下commons包，当然也可以别
servlet中代码：
              //防止路径中有汉字
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
//判断是否multipart模式
boolean flag = ServletFileUpload.isMultipartContent(request);
if(flag){
DiskFileItemFactory factory = new DiskFileItemFactory();         factory.setSizeThreshold(4096);

        ServletFileUpload upload = new ServletFileUpload(factory);         upload.setSizeMax(1000000);

        Iterator i = null;
try {
i = upload.parseRequest(request).iterator();
} catch (FileUploadException e1) {
e1.printStackTrace();
}
        while(i.hasNext()){
        FileItem fi = (FileItem)i.next();
        
        String fileName = fi.getName();
       
        try {
         String name = fileName.substring( fileName.lastIndexOf("\\")+1,fileName.length());
         String realpath =request.getRealPath("/uploadFill");
         String ContextPath =request.getContextPath();
         String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+ContextPath+"/";
         String remoteAddr = request.getRemoteAddr();
         String LocalAddr = request.getLocalAddr();          Date date = new Date();
        
         String filename=date.getYear()+date.getMonth()+date.getDay()+date.getHours()+date.getMinutes()+date.getSeconds()+name;
         System.out.println(filename);
         System.out.println(date.getYear()+""+date.getMonth()+date.getDay()+date.getHours());
         String filepath=realpath+File.separatorChar+filename;
         System.out.println("filepath:"+filepath);
         //// write直接输出
         fi.write(new File(realpath, filename));
                  request.getSession().setAttribute("iamge", "uploadFill/"+filename);
         System.out.println("uploadFill/"+filename);
         request.getRequestDispatcher("MyFillUpLoad.jsp").forward(request, response);
        
        
        
} catch (Exception e) {

e.printStackTrace();
}
        }
}else{

System.out.println("否multipart模式");
}

Answer 8

其实如果是下载。rar或者是看图片，直接写response.sendRedirect(“你得到的目录”)；就可以

Answer 9

其实我只是想获得C:\backup\leadpdb20120917.dmp这样的东西。当然不能手动敲进去