QuestionAsk Questions?
SAMARPITA HATUA
FILE UPLOAD-DOWNLOAD code USING JSP
View Answers
May 4, 2012 at 10:34 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:/"+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="download.jsp?f=<%=saveFile%>">Download</a>
May 4, 2012 at 10:35 AM
continue..
3)download.jsp:
<%@ page import="java.util.*,java.io.*"%>
<%
String file=request.getParameter("f");
File f = new File (file);
String filename=f.getName();
response.setContentType ("application/text");
response.setHeader ("Content-Disposition", "attachment; filename=\""+filename+"\"");
String name = f.getName().substring(f.getName().lastIndexOf("/") + 1,f.getName().length());
InputStream in = new FileInputStream(f);
ServletOutputStream outs = response.getOutputStream();
int bit = 256;
int i = 0;
try {
while ((bit) >= 0) {
bit = in.read();
outs.write(bit);
}
} catch (IOException ioe) {
ioe.printStackTrace(System.out);
}
outs.flush();
outs.close();
in.close();
%>
Related Pages:
If you are facing any programming issue, such as compilation errors or not able to find the code you are looking for.
Ask your questions, our development team will try to give answers to your questions.
Tutorial Topics
