image file upload to a web server
Refer roseindia post http://www.roseindia.net/jsp/fileupload/Sinleupload.xhtml.shtml.
It works fine on my local computer. But when I use it on a server it don't work. My server uses Apache Tomcat 5 server. How can I upload a file to the web server?
View Answers
June 11, 2012 at 3:15 PM
Here is an example of uploading an image on the server. The user can browse the image and upload it on the server.
1)page.jsp:
<%@ page language="java" %> <HTML> <HEAD><TITLE>Display file upload form</TITLE></HEAD> <BODY> <FORM ENCTYPE="multipart/form-data" ACTION= "upload.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)upload.jsp:
<%@ page import="java.io.*" %>
<%@ page import="java.sql.*" %>
<% 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);
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;
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;
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>
<%
}
%>
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