Servlet file uploading code need.

Hello
Can somebody give me a sourcecode of working servlet program that do file uploading on the server?
thnks

He's not angry at you, he's just angry at the self-serving tone of your post.
Why don't you give me a $100 USD... while at it? Oh, no? But WHY? Why oh why? I'm such a good person of liberal character - could you give me a 100 dollars RIGHT NOW? Oh, you wouldn't - I see...
Almost the same w/that "give me source code" :)....

Similar Messages

URGENT! File Upload Utility or a Custom UI for File Upload is needed!

Hi all,
I'm trying to find or develop a file upload utility or custom user interface rather than editing and adding file type item to a page. There is a free portlet for file upload in Knowledge Exchange resources, but it is for 3.0.9 release. I'm using portal 9.0.2.
I could not any sample about the new release. Also API such as wwsbr_api that is used to add item to content areas is out dated.
I create a page with a region for "items". When "edit" page and try to add an "file" type item the generated url is sth like this;
"http://host:7779/pls/portal/PORTAL.wwv_additem.selectitemtype****"
After selecting item type as a simple file autogenerated url is sth. like ;
"http://host:7779/pls/portal/PORTAL.wwv_add_wizard.edititem"
I made search about these API but could not find anything (in PDK PL/SQL API help, too).
I need this very urgent for a proof of consept study for a customer.
Thanks in advance,
Kind Regards,
Yeliz Ucer
Oracle Sales Consultant

Answered your post on the General forum.
Regards,
Jerry
PortalPM

File Upload - code improvement help

I have asked similar kind of question before, but it was termed as meaningless. I hope this time it will have some meaning(I am now following the instructions :)).
I got this code from online, the address is mentioned in the comments. With little changes it is serving the purpose well. However, the upload time is a bit high and I was wondering is there a way to improve that.


<html>
    <head>
    <title>Upload Page</title>
    <jsp:useBean class = "formjavabean.application" id = "applicationId" scope = "session" />
    </head>
    <body>
    <%@ page import="java.io.*" %>
    <%
    String userEmail = applicationId.getUserEmail() ;
    File user = new File("C:\\JBoss\\jboss-4.0.5.GA\\bin\\Fastran\\" + userEmail ) ;
    user.mkdir() ;
    String contentType = request.getContentType();
    System.out.println("Content type is :: " +contentType);
    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("c:\\JBoss\\jboss-4.0.5.GA\\bin\\Fastran\\" + userEmail + "\\" + saveFile);
        fileOut.write(dataBytes, startPos, (endPos - startPos));
        fileOut.flush();
        fileOut.close();
    %>
    <img src="logo.jpeg" width="101" height="75" align = "Right">
    <img src="h_corporate_center.jpg" width="622" height="102">
    <br><br><br><br>
    <b>
    <%
    out.println("File uploaded as "+" \"" +saveFile+" \"");
    %>
    <br><br>
    <b>Please make sure all required files are uploaded:<br>
    <font color = "Red">ftn03, ftn07, and ftn09<font>
    <br><br><br><br>
    <input type=button onClick="location.href='fastran.jsp'" value='Proceed'>
    </body>
</html>

the input files are a bunch of text files, with a lot of numbers generated through some other software. There can be some big files (perhaps close to a GB), and the upload time for such a file is painfully long - something like 6 min, over LAN. I have tried to upload it on my own computer(with application server running on it) and for a 50 MB file, it is taking about 3 min.
There are many third part options are available but that requires some librarires, and this code doesn't. So my preference is for this one.
Also, I couldn't figure out exactly, but some articles were suggesting to use String buffers instead of just Strings. In my case, Strings are used.
Secondly, I understand using of input and output buffer stream, but can it be the cause of long upload time? I mean converting a file to some machine independent code and then re-converting it back. If yes, can there be a way of skipping that all together ?
I am a bit hesitant of asking questions, my previous experience here was not a very pleasant one. Some genius, bullied me around :)
I will appreciate any help, thanks :)
Message was edited by:
NasirMunir

J2me multipart file upload- Help Needed

package com.mpbx;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import java.io.*;
public class PostFile extends MIDlet implements Runnable, CommandListener{
    private final String FILE = "/image.jpg";
    private final String URL = "http://localhost/post.php"; // change this to a valit page.
    private final String CrLf = "\r\n";
    private Form form = null;
    private Gauge gauge = null;
    private Command exitCommand;
    private Command uploadCommand;
    public PostFile(){
        form = new Form("Upload File");
        gauge = new Gauge("Progress:", true, 100, 0);
        form.append(gauge);
        exitCommand = new Command("Exit", Command.EXIT, 0);
        uploadCommand = new Command("Upload", Command.SCREEN, 0);
        form.addCommand(exitCommand);
        form.addCommand(uploadCommand);
        form.setCommandListener(this);
    public void startApp() {
        Display.getDisplay(this).setCurrent(form);
    public void pauseApp() {
    public void destroyApp(boolean unconditional) {
    private void progress(int total, int current){
        int percent = (int) (100 * ((float)current/(float)total));
        gauge.setValue(percent);
    public void run() {
        httpConn();
    private void httpConn(){
        HttpConnection conn = null;
        OutputStream os = null;
        InputStream is = null;
        try{
            System.out.println("url:" + URL);
            conn = (HttpConnection)Connector.open(URL);
            conn.setRequestMethod(HttpConnection.POST);
            String postData = "";
            InputStream imgIs = getClass().getResourceAsStream(FILE);
        byte []imgData = new byte[imgIs.available()];
           imgIs.read(imgData);
            String message1 = "";
            message1 += "-----------------------------4664151417711" + CrLf;
            message1 += "Content-Disposition: form-data; name=\"uploadedfile\"; filename=\"" + FILE + "\"" + CrLf;
            message1 += "Content-Type: image/jpeg" + CrLf;
            message1 += CrLf;
            // the image is sent between the messages ni the multipart message.
            String message2 = "";
            message2 += CrLf + "-----------------------------4664151417711--" + CrLf;
            conn.setRequestProperty("Content-Type", "multipart/form-data; boundary=---------------------------4664151417711");
            // might not need to specify the content-length when sending chunked data.
            // conn.setRequestProperty("Content-Length", String.valueOf((message1.length() + message2.length() + imgData.length)));
            System.out.println("open os");
            os = conn.openOutputStream();
            System.out.println(message1);
            os.write(message1.getBytes());
            // SEND THE IMAGE
            int index = 0;
            int size = 1024;
            do{
                System.out.println("write:" + index);
                if((index+size)>imgData.length){
                    size = imgData.length - index;
                os.write(imgData, index, size);
                index+=size;
                progress(imgData.length, index); // update the progress bar.
            }while(index<imgData.length);
            System.out.println("written:" + index);
            System.out.println(message2);
            os.write(message2.getBytes());
            os.flush();
            System.out.println("open is");
            is = conn.openInputStream();
            char buff = 512;
            int len;
            byte []data = new byte[buff];
            do{
                System.out.println("READ");
                len = is.read(data);
                if(len > 0){
                    System.out.println(new String(data, 0, len));
            }while(len>0);
            System.out.println("DONE");
        }catch(Exception e){
            e.printStackTrace();
        }finally{
            System.out.println("Close connection");
            try{
                os.close();
            }catch(Exception e){}
            try{
                is.close();
            }catch(Exception e){}
            try{
                conn.close();
            }catch(Exception e){}
    public void commandAction(javax.microedition.lcdui.Command command, javax.microedition.lcdui.Displayable displayable) {
        if(command == exitCommand){
            this.notifyDestroyed();
        }else if(command == uploadCommand){
            new Thread(this).start();
}Running this yields the error below...Can someone suggest me. whats the problem.
url:http://localhost/post.php
java.lang.NullPointerException
        at com.mpbx.PostFile.httpConn(PostFile.java:85)
        at com.mpbx.PostFile.run(PostFile.java:68)
Close connection

I also faced the same problem. To make this code work you will have to include the image.jpg in the jar. To do that, copy the image file in the src directory inside your project folder (if you are using netbeans) and then build the project.
Remember, the web server should be running in background.

Servlet file uploading

hi
from HTML page
<form id="form" action="bookimage?a=add" method="get">
<input type="text" name="txtBookTitleId" id="txtBookTitleId" />
<input type="file" name="txtImg" id="txtImg"/>
</fom>
servlet
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
Long bookTitleId=new Long(request.getParameter("txtBookTitleId"));
String imglocation=request.getParameter("txtImg");
File file=new File(imglocation);
FileInputStream fs = new FileInputStream(file);
int len=fs.available();
byte[] img = new byte[len];
fs.read(img, 0,len);
}catch(Exception e){
e.printStackTrace();
above is code which i use in my application
but it not working
i am not getting FileInputStream fs it gives error.
if form method used post then gives null request parameter(bookTitleId , imglocation)
please suggest solution proper and dynamic for image up loading form client to server .
it works when i give static file path
postgersql is database and application is Ejb application.

To be able to send a file from the client to the server you need at least the POST method and the multipart/form-data enctype. Also see the HTML forms specification: [http://www.w3.org/TR/html401/interact/forms.html].
In the server side, in case of a multipart/form-data request you need to extract all request parameters (including the complete file) back from the request body yourself. Those aren't available by getParameter() and so on. There's a very robust, commonly used and thoroughly tested API available for this: the Apache Commons FileUpload: [http://commons.apache.org/fileupload]. Read especially the 'User Guide' and 'Frequently Asked Questions' sections.

What's the error of this file-upload code?

hi,
I have written following code for file selection:
<form action="display.jsp" method="POST" enctype="multipart/form-data">
<input type="file" name="File1">
<input type="submit" name = "button" value="Submit">
</form>And my project another file display.jsp which code is:
<%@ page import="org.apache.commons.fileupload.*"%>
<%@page import="java.io.*" %>
<%@page import="java.util.*" %>
<%
     out.println("Content Type: "+request.getContentType());
     boolean isMultipart=FileUpload.isMultipartContent(request);
     DiskFileUpload upload=new DiskFileUpload();
     List items=upload.parseRequest(request);
     Iterator iter=items.iterator();
     while(iter.hasNext()){
          FileItem item=(FileItem)iter.next();
          if(item.isFormField()){
               out.println("SIZE: "+item.getSize());
            File fNew= new File(application.getRealPath("/"), item.getName());
             out.println(fNew.getAbsolutePath());
            item.write(fNew);
          else
     out.println("Field ="+item.getFieldName());
%>After that, i put on common-fileupload-1.1..jar on the project's /WebConcontent/WEB-INF/lib/ directory. And i have also add the common--fileupload-1.1.1. jar in the project build path. Further that i have got following error:
Error is:
exception
org.apache.jasper.JasperException: org/apache/commons/io/output/DeferredFileOutputStream
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.ServletException: org/apache/commons/io/output/DeferredFileOutputStream
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
     org.apache.jsp.display_jsp._jspService(display_jsp.java:78)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
java.lang.NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream
     org.apache.commons.fileupload.DefaultFileItemFactory.createItem(DefaultFileItemFactory.java:102)
     org.apache.commons.fileupload.FileUploadBase.createItem(FileUploadBase.java:500)
     org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:367)
     org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:268)
     org.apache.jsp.display_jsp._jspService(display_jsp.java:53)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)Why i have got this error? IS there anybody can help me? What will be the solution?Please Help me?
With regards
Bina

java.lang.NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream
Means you are missing a class file from the class path. Most likely cause is a missing jar file. The Apache Commons utilities often have dependancies on other Commons projects. This looks like it is looking for the Apache Commons IO jar file. Download the jar file and add it to the WEB-INF/lib directory.

Image file upload code

Hi,
I'm trying to track down where, i.e. by which code, image files are saved into the wiki.
I've traced the route to the wiki.js file which creates the dialogue that posts the form to the server but I've run into a wall.
I can't establish the name of the 'action' for the form.
Nor can I infer which python code is receiving it.
Can anyone help?
p.s. The reason for all this is that I want uploaded files to be namable, either manually or driven by a field in the form.
I guess this may involve rewriting some Python and I know that this is frowned upon but the look-out is mine!
p.p.s. It would also be nice to know where dialogManager() is defined, that's got me beaten at the moment.

John Anderson1 wrote:
Remember that, when changing the code, you should override the code using your own theme; don't change it directly. Changing the uncompressed JavaScript won't work anyway; the server sends out code-compressed scripts whenever possible. Changing source code maintained by automatic software updates is the first of many steps down the path toward a bricked server.
Yes, I'm starting to get a hang of this (I think) I do intend to override the js, it's just I need to know how it's doing it in order to overrride it!
The form's "action" is "images"
I'd sort of deduced this but I can't find the code on the server that implements it. I did a quick search and couldn't find "images' in Python and deduced I was being a bit simplistic.
and dialogManager is defined in widgets.js:
var ModalDialogManager = Class.createWithSharedInstance('dialogManager');
Ah, thanks, I'll follow it up.
You do know that you can just name the file in the Finder before uploading it, right?
Not really. Under certain circumstances I want teamsserver to save the image file, in the page's image folder, with a particular name, i.e. NOT 123456.gif but pageImage.gif. I recognise that one has the potential problem of duplicate filenames but I'm happy to overwrite existing files AND I'm quite happy for teamsserver to give the file a unique name (presumably for internal database purposes) and make a duplicate of the numbered filename. i.e. save 123456.gif as per normal and then, if some condition is met (e.g. the alt name == pageimage) save a copy as pageImage.gif
(If you're interested, I've managed to get search to take an additional parameter xslFile=1...5 which selects alternate search.xsl files that return different search layouts. One of which substitutes page specific images instead of the generic 'snowflake' image in search listings. Currently I have to give each page a tag that specifies what the pageImage uid is, but this is wasteful as every tag in every page is therefore different. What I'm trying to do now is make the pageImage filename consistent so that I have a single tag that indicates every page that has an associated image. (The custom search.xsl files recognise if a page HAS a custom image and uses the snowflake if it doesn't)
Basically it allows me to generate slightly more attractive listings - nothing big but nice for my 'list of published books' page. Vanity, vanity)
Thanks for hte help. I'll follow it up tomorrow.

File upload - I need help

[Sorry 'bout my bad English]
I'm trying to upload a file in a JSP. This page do a post to another JSP. In this page I have the code (there is more):
1)PrintWriter pw = new PrintWriter(
2) new BufferedWriter(new FileWriter( file)));
3) ServletInputStream in = request.getInputStream();
4) int i = in.read(); // here I got the error
5) while ( i != -1 ) {
6) pw.print((char) i);
7) i = in.read();
8) }
I got an error that the file was not open, so I run the page in the debug mode, and I notice that the lenght of 'in', just after line 3, is 0.
Please help
thank you.

read this. its 4 pages. tells ya everything you need to know.
http://www.onjava.com/pub/a/onjava/2001/04/05/upload.html?page=1
-S-

File Upload Help Needed - Very Urgent

Dear All
I am making a application in Webdynpro for uploading an excel file to the server. Can someone give me a demo application so that I can run it and see whether my server is configured or not. Also I have made the application right now and have coded the need full. But when I select a file and say submit it shows me a page not found error. Currently I am working round the clock on my project and am stuck up here. Its very urgent can any body help please with an example or a demo application.
Regards Gaurav

Hi,
Check whether in server, MultipartBodyParameterName property is set to "com.sap.servlet.multipart.body" . You can check this by going to Visual Admin -> Cluster tab -> Services -> web container -> Properties sheet.
Do assign points if i answered your question.
Regards
Vasu

(JSP/SERVLET) File upload Character problem form enctype="multipart.....

Hi,
When i upload a file from <form> ( jsp page ) and send it to my object class(struts,servlet) , the filename ��.doc are replaced by ?????.doc. in the database.
I make few test by adding UTF-8 charset and content type to the jsp but still doesn't work...
Ex :
String encod = request.getCharacterEncoding();
if (encod == null || !encod.equals("UTF-8"))
try
request.setCharacterEncoding("UTF-8");
catch (UnsupportedEncodingException e)
System.err.println("HttpMultipartRequest - : " + e);
It's not a charset problem in the database because i try to do with an input type="text" and its working. It's just not working with the input type="file".
And i also add directly �� character into the database and its working.
it's will be a pleasure if someone could response to me .
thanks
Jonathan

warnerja,
Not sure why you always play the part of the
cross-post police... Seems like waste of effort to
me.To each his own. I'm not sure why you feel the need
to question my motives. Also not sure why you have
posted requests to Sun regarding forum features...
"Seems like a waste of effort to me.". But I wasn't
going to call you on it.touch�
:-)

File upload after deployment

hi everbody,
i had deployed the file upload code in unix server and the page is successfully opening after attaching functions and menus. Now the page has only messagefileupload type item for file upload. so please please can anybody tell how to upload the file to a specific directory. my code i have used is in application module is like this but after selecting a file and click submit the file is not being uploaded.
String path= "/u03/prodcomn/temp/"+fileName;
if(testprofile != null){
System.out.println("path.."+path);
FileOutputStream fileOutput = new FileOutputStream(path);
fileOutput.write(blobIn.toByteArray());
fileOutput.close();
}

the above code is perfectly correct and it is working , the silly thing that i didnt notice is in winscp i didnt refresh and see after file upload in the page.
i had wasted whole one day for this.
thanks
prabhakaranp

File upload JSP

Yet again the issue of file upload...?:|
I am trying to use a file upload as part of my screenflow.
I besically have 2 jsp files. jsp file upload code and the supporting HTML.
I created 2 "interactive component calls", connected with a transition and in the 1st one I call one JSP and in the 2nd one the other JSP.
My action on my HTML is action="fileupload.jsp" (my upload code file) I try changing it to action="<f:postResults />" but that didnt work
Then I changed my action to "<f:postResults fowardUrl="fileupload.jsp"/> I got an error on that too.
Anyone can help with that issue? I am besically tring to do a simple file upload from my sub-process.
Thank You
Lilach

Hi,
There was a sample application regarding File Upload in Fuego 5.5. My mail id is [email protected] If you want then drop me a mail and I can send across the export of the same to you.

HELP! File Upload Servlet and Internet Explorer

Hello people. I hope this is an easy problem to solve...
I have a servlet upload program that works using Mozilla browser (www.mozilla.org), but for some reason it doesn't work using Microsoft IE. The servlet is also using the servlet upload API from Apache (commons).
I'm using IE version 6.0.2800.1106 in a Win98SE host computer. I get a cannot find path specified error message (see below). At work, I also get the same error message using IE, but don't know what version. The OS is XP. Unfortunately, at work, I can't install Mozilla browser (or any software-company policy) to see if Mozilla works there too. I would've like to have tested to see if the upload program worked on Mozilla on a truly remote computer.
So I figured, it must be a IE configuration issue, but darn it!! I began by resetting IE to default settings, but still have the problem, I played around with several different combinations of settings in "Tools"-->"Internet Options...", and I still get the error message. Someone PLEASE HELP ME!!!
Dunno, if it will help, I've also pasted the upload servlet source code below and the html file that's calling the upload servlet, but you still need the Apache commons file upload API.
Trust me on this one folks, for some reason it works for Mozilla, but not for IE. With IE, I can at least access web server, and therefore, the html file that calls the upload servlet , so I don't think it's a Tomcat configuration issue (version 5.0). I actually got the code for the file upload servlet from a book relatively new in the market (printed in 2003), and it didn't mention any limitations as far as what browser to use or any browser configuration requirements. I have e-mailed the authors, but they probably get a ton of e-mails...
Anyone suggestions?
Meanwhile, I will try to install other free browsers and see if the file upload program works for them too.
ERROR MESSAGE:
"HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: C:\TOMCAT\webapps\MyWebApps\files\C:\WINDOWS\Desktop\myfile.zip (The system cannot find the path specified)
     com.jspbook.FileUploadCommons.doPost(FileUploadCommons.java:43)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
root cause
java.io.FileNotFoundException: C:\TOMCAT\webapps\MyWebApp\files\C:\WINDOWS\Desktop\myfile.zip (The system cannot find the path specified)
     java.io.FileOutputStream.open(Native Method)
     java.io.FileOutputStream.(FileOutputStream.java:176)
     java.io.FileOutputStream.(FileOutputStream.java:131)
     org.apache.commons.fileupload.DefaultFileItem.write(DefaultFileItem.java:392)
     com.jspbook.FileUploadCommons.doPost(FileUploadCommons.java:36)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
note The full stack trace of the root cause is available in the Tomcat logs.
Apache Tomcat 5.0.16"
FILE UPLOAD SERVLET source code:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.commons.fileupload.*;
import java.util.*;
public class FileUploadCommons extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<html>");
out.print("File upload success. <a href=\"/MyWebApp/files/");
out.print("\">Click here to browse through all uploaded ");
out.println("files.</a><br>");
ServletContext sc = getServletContext();
String path = sc.getRealPath("/files");
org.apache.commons.fileupload.DiskFileUpload fu = new
org.apache.commons.fileupload.DiskFileUpload();
fu.setSizeMax(-1);
fu.setRepositoryPath(path);
try {
List l = fu.parseRequest(request);
Iterator i = l.iterator();
while (i.hasNext()) {
FileItem fi = (FileItem)i.next();
fi.write(new File(path, fi.getName()));
catch (Exception e) {
throw new ServletException(e);
out.println("</html>");
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
doPost(request, response);
HTML PAGE that calls the upload servlet:
<html>
<head>
<title>Example HTML Form</title>
</head>
<body>
<p>Select a file to upload or browse
currently uploaded files.</p>
<form action="http://##.##.##.####/MyWebApp/FileUploadCommons"
method="post" enctype="multipart/form-data">
File: <input type="file" name="file"><br>
<input value="Upload File" type="submit">
</form>
</body>
</html>
Thanks in advance for any assistance.
-Dan

I'm guessing what is happening is that Mozilla tells the servlet "here comes the file myfile.zip". The servlet builds a file name for it:
    String path = sc.getRealPath("/files");
    // path is now C:\TOMCAT\webapps\MyWebApps\files\
    fi.write(new File(path, fi.getName()));
    // append myfile.zip to "path", making it C:\TOMCAT\webapps\MyWebApps\files\myfile.zipIE, however, tells "here comes the file C:\WINDOWS\Desktop\myfile.zip". Now imagine what the path+filename ends up being...
So what you want to do is something along the lines of (assuming Windoze):
public static String basename(String filename)
    int slash = filename.lastIndexOf("\\");
    if (slash != -1)
        filename = filename.substring(slash + 1);
    // I think Windows doesn't like /'s either
    int slash = filename.lastIndexOf("/");
    if (slash != -1)
        filename = filename.substring(slash + 1);
    // In case the name is C:foo.txt
    int slash = filename.lastIndexOf(":");
    if (slash != -1)
        filename = filename.substring(slash + 1);
    return filename;
    fi.write(new File(path, basename(fi.getName()));
    ....You can make the file name check more bomb proof if security is an issue. Long file names trying to overflow something in the OS, NUL characters, Unicode, forbidden names in Windos (con, nul, ...), missing file name, ...

File upload using Servlets and Weblogic

Hi,
I need to write a servlet that can upload a .doc file to a folder on the server. Can someone please let me know abot the code i need to write, as i am a novice in servlets.
Thanks in advance
buddy0303

Another, simpler (we think), such package is Jenkov HTTP Multipart File Upload. It's a servlet filter which can work in front of both servlets and JSP's. The servlet filter parses the uploaded file and stores it temporarily on the servers disk. When the servlet or JSP executes afterwards, it can obtain all the information about the file, from the request attributes. There is a decent manual for HTTP Multipart File Upload on the website.
Just search for "Jenkov HTTP Multipart" on Google and you'll find it. HTTP Multipart is free, open source, Apache Licsense.

Java.io.IOException in servlet-based file upload

Hi,
          I'm running into some problems with Weblogic Server 5.1 on Unix (Solaris), while
          trying to do a servlet-based file upload. I'm trying to upload a file to the
          server file system through a file upload servlet running inside Weblogic Server
          5.1, and I get an exception when I try to create a file on the Unix server
          filesystem:
          java.io.IOException: Not owner
          at java.io.UnixFileSystem.createFileExclusively(Native Method)
          at java.io.File.createNewFile(File.java:692)
          at com.cysive.filemanagement.UploadFile.save(UploadFile.java:84)
          I tried changing the upload location to various places, like directly in the
          docroot (myserver/public_html), in my home directory, etc. I am not sure which
          owner Weblogic is looking for, because the process is owned by whoever starts
          the WL server. And the strange thing is, I am able to create new directories on
          the file system, just not files.
          When I run the exact code on WinNT, everything works fine... I am able to create
          files and directories and the upload goes through smoothly.
          I'm thinking there is something I need to be setting in the weblogic.properties
          file on Unix by way of permissions/privileges that is not required on WinNT, but
          was not able to find anything in the documentation.
          Could anyone help, please?
          Thanks.
          Hrishi


Check what user/group you are running your weblogic server.(check out the user who starts as well as UID/user/group in weblogic.properties file if you have set them).
check out whether that user/group has necessary permission on unix m/c
Hrishi Dixit <[email protected]> wrote:
>
Hi,
I'm running into some problems with Weblogic Server on Unix, while trying to do
a servlet-based file upload. I'm trying to upload a file to the server file
system through a file upload servlet running inside Weblogic Server 5.1, and I
get an exception when I try to create a file on the Unix server filesystem:
java.io.IOException: Not owner
     at java.io.UnixFileSystem.createFileExclusively(Native Method)
     at java.io.File.createNewFile(File.java:692)
     at com.cysive.filemanagement.UploadFile.save(UploadFile.java:84)
I tried changing the upload location to various places, like directly in the
docroot (myserver/public_html), in my home directory, etc. I am not sure which
owner Weblogic is looking for, because the process is owned by whoever starts
the WL server. And the strange thing is, I am able to create new directories on
the file system, just not files.
When I run the exact code on WinNT, everything works fine... I am able to create
files and directories and the upload goes through smoothly.
I'm thinking there is something I need to be setting in the weblogic.properties
file on Unix by way of permissions/privileges that is not required on WinNT, but
was not able to find anything in the documentation.
Could anyone help, please?
Thanks.
Hrishi

Servlet file uploading code need.

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