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error in uploading zip file

sachin arora

Joined: Feb 02, 2009
Posts: 2
i have the to upload a file but its not woking for zip file can anyone tell me code to upload a zip file

the code i have is

<%@ page import="*" %>
//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();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
//this loop converting the uploaded file into byte code
while (totalBytesRead < formDataLength) {
byteRead =, 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));

%><Br><table border="2"><tr><td><b>You have successfully upload the file by the name of:</b>
<% out.println(saveFile); %></td></tr></table> <%
Bear Bibeault
Author and ninkuma

Joined: Jan 10, 2002
Posts: 63865

Step 1: Get the code out of a JSP and into a servlet where it belongs.

[Asking smart questions] [About Bear] [Books by Bear]
David Newton

Joined: Sep 29, 2008
Posts: 12617

Step 2: UseCodeTags when posting code or configuration. Unformatted code and configuration is very difficult to read. You can edit your post to include them by using the button.

Paul Clapham

Joined: Oct 14, 2005
Posts: 19973

And Step 3: TellTheDetails. Just "not woking" doesn't tell us anything about the problem.
I agree. Here's the link:
subject: error in uploading zip file
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