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JSP Basics Beginning-level questions on JSP. More advanced coders should post to Pro JSP.
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Old May 15th, 2007, 03:12 AM
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Default change the directory of uploaded files : jsp code

Hi all

i have jsp upload code and its working, when i upload a file it saves them in Windows\system32 but i want to create a new folder in system32 and save the uploaded files there

so could anyone help me in that

this is the form
<%@ page language="java" %>

<HTml>

<HEAD><TITLE>Display file upload form to the user</TITLE></HEAD>




<BODY>

<FORM ENCTYPE="multipart/form-data" ACTION="single_upload_page.jsp" METHOD="POST">

<br><br><br>

 <center><table border="2" >

 <tr><center><td colspan="2"><p align="center"><B>PROGRAM FOR UPLOADING THE FILE</B><center> </td></tr>

 <tr>
 <td><b>Choose the file To Upload:</b></td>

  <td><INPUT NAME="F1" TYPE="file"></td>
 </tr>

<tr><td colspan="2"><p align="right"><INPUT TYPE="submit" VALUE="Send File" ></p></td>
</tr>


 </table>
     </center>
     </FORM>
</BODY>
</HTML>

and this is the uploading code
<%@ page import="java.io.*" %>
<%
    //to get the content type information from JSP Request Header

    String contentType = request.getContentType();

    //here we are checking the content type is not equal to Null and as well as the passed data from mulitpart/form-data is greater than or equal to 0

    if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0))

     {
         DataInputStream in = new DataInputStream(request.getInputStream());


    //we are taking the length of Content type data

        int formDataLength = request.getContentLength();

        //out.print(formDataLength);
        byte dataBytes[] = new byte[formDataLength];

        int byteRead = 0;

        int totalBytesRead = 0;

        //this loop converting the uploaded file into byte code

        while (totalBytesRead < formDataLength)

        {

        byteRead = in.read(dataBytes, totalBytesRead, formDataLength);

            totalBytesRead += byteRead;

        }

        String file = new String(dataBytes);

        //for saving the file name

        String saveFile = file.substring(file.indexOf("filename=\"") + 10);

        saveFile = saveFile.substring(0, saveFile.indexOf("\n"));

        saveFile = saveFile.substring(saveFile.lastIndexOf("\\")+ 1,saveFile.indexOf("\""));

        int lastIndex = contentType.lastIndexOf("=");

        String boundary = contentType.substring(lastIndex + 1,contentType.length());

        int pos;

        //extracting the index of file

        pos = file.indexOf("filename=\"");

        pos = file.indexOf("\n", pos) + 1;

        pos = file.indexOf("\n", pos) + 1;

        pos = file.indexOf("\n", pos) + 1;

        int boundaryLocation = file.indexOf(boundary, pos) - 4;

        int startPos = ((file.substring(0, pos)).getBytes()).length;

        int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;

        // creating a new file with the same name and writing the content in new file

        FileOutputStream fileOut = new FileOutputStream(saveFile);

        fileOut.write(dataBytes, startPos, (endPos - startPos));

        fileOut.flush();

        fileOut.close();

        %>

        <Br><table border="2"><tr><td><b>You have successfully upload the file by the name of:</b>

        <% out.println(saveFile); %></td></tr></table>

        <%
        }
%>


Thanks in advance:D


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  #2 (permalink)  
Old May 17th, 2007, 06:53 AM
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Default

Hi,
You can do that by prefixing the folder name to the file name when you create FileOutputStream object.

BUT WHAT I SUGGEST IS not to store them in system32 directory as it is windows operating systems directory. Instead use a property file which will have a property with the value of the directory path where you want to store the uploaded files
#files.properties
rootDir=c:\my_files

some thing like that, use this value while creating FileOutputStream object.

Hope its usefull.

Regards,
Rakesh
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  #3 (permalink)  
Old May 19th, 2007, 06:06 AM
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Default

Thanks alot Rakesh

i relly appreciate it :-)

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