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Debabratta Jena
file upload using JSP
4 Answer(s)      2 years and 5 months ago
Posted in : JSP-Interview Questions


I have created a form to upload a file in a html page, now i want to get the path of the file in a jsp page so what code should I write?

thanks and regards...


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May 6, 2013 at 12:02 PM


it was coming as an error........

java.lang.StringIndexOutOfBoundsException: String index out of range: -1



April 4, 2012 at 11:10 AM


1)page.jsp:

<%@ page language="java" %>
<HTML>
<HEAD><TITLE>Display file upload form to the user</TITLE></HEAD>

<BODY> <FORM ENCTYPE="multipart/form-data" ACTION=
"uploadandstore.jsp" METHOD=POST>
<br><br><br>
<center>
<table border="0" bgcolor=#ccFDDEE>
<tr>
<center>
<td colspan="2" align="center"><B>UPLOAD THE FILE</B><center></td>
</tr>
<tr>
<td colspan="2" align="center"> </td>
</tr>
<tr>
<td><b>Choose the file To Upload:</b></td>
<td><INPUT NAME="file" TYPE="file"></td>
</tr>
<tr>
<td colspan="2" align="center"> </td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="Send File"> </td>
</tr>
<table>
</center>
</FORM>
</BODY>
</HTML>

2)uploadandstore.jsp:

<%@ page import="java.io.*" %>
<%@ page import="java.sql.*" %>

<%
String saveFile="";
String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength) {
byteRead = in.read(dataBytes, totalBytesRead,formDataLength);
totalBytesRead += byteRead;
}
String file = new String(dataBytes);
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;
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;
saveFile="C:/UploadedFiles/"+saveFile;
File f = new File(saveFile);
FileOutputStream fileOut = new FileOutputStream(f);
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>
<%
}
%>
<a href="viewFiles.jsp">View Files</a>

3)viewFiles.jsp:

<%@page import="java.io.*"%>
<table>
<%
File f = new File("C:/UploadedFiles");
File[] files = f.listFiles();
for(int i=0;i<files.length;i++){
String name=files[i].getName();
String path=files[i].getPath();
%>
<tr><td><a href="#" ><%=name%></a></td><td><a href="#"><%=path%></a></td></tr>
<%
}
%>
</table>


April 16, 2014 at 4:10 PM


String uploadPath=System.getProperty("user.home")+File.separatorChar+"your-directory-name"; out.println(uploadPath);



April 16, 2014 at 4:10 PM


String uploadPath=System.getProperty("user.home")+File.separatorChar+"your-directory-name"; out.println(uploadPath);



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