Code of the index_multiple_upload.jsp
________________________________________________________
<%@ page language="java" % >
<HTML>
<HEAD>
<TITLE>
Display file upload form to the user</TITLE>
</HEAD>
<% // for uploading the file we used Encrypt type of multipart/
form-data and input of file type to browse and submit the file %>
<BODY>
<FORM ENCTYPE="multipart/form-data" ACTION=
"sinle_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>
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Code of the Multiple_upload.jsp
<%@ 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();
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>
<%
}
%>
