File upload applet recommendations

Greetings,
We are building a large-scale extranet that will heavily
involve user uploads of various files, including potentially large
videos. In the past we've just used file fields and handled the
stream with cffile and cfftp. However, we are thinking that we need
a java applet for two reasons:
1. to allow multiple files at once (this is not critical)
2. to be able to check file size on the client (this would be
extremely helpful), and stop the upload if it's too large.
At launch, users will all be on Macs and Firefox--however, as
things do this could always change; it is assured though that we
will never be able to specify all-windows, so I assume that activex
is "right out". As with any of our assumptions, please set us
straight!
Once any files are uploaded, we will need to database the
file information (it will be placed into a kind of cms), so it's
going to have to be more than "dump into a folder". Ideally the
applet could "hand off" to a CF process that would do this; I
suppose that we could also set up a kind of listener for the upload
directory but this seems less then ideal. Again, ideas on how this
might work would be welcome.
Related to the process: we've used various image-manipulation
server-side programs with CF, but don't know of any for video.
Anything that might be able to manipulate video we'd love to hear
about, even if it's some monster server/package.
Thanks,
Rick

Hi,
There is a property called "Auto Query Mode" in the applet. Check whether this has been set to "New Query" in 7.5. If so the applet will be opening in Query Mode automatically. If this property is blank, in 7.8, the applet will not be opening in Query mode. Check and let me know.
Regards,
Joseph

Similar Messages

Upload Friendly (Multiple File Upload Applet)

Title : Upload Friendly (Multiple File Upload Applet)
Description : UploadFriendly is an easy to use Java Applet that will allow multiple file
uploads on a web server in a web page. The control supports file filtering, limits and more.
Samples available in the following languages: ASP, ASP.NET, PHP, Coldfusion and JSP
Link: http://www.uploadfriendly.com/
Type: Commercial (30 days Trial)

Hi shiil,
To move the documents between site collection, content organizer rules would be a recommended method, you can activate Content Organizer features to enable content organizer rules on the site, to root the document to another site collection.
Also, for this issue, as Prasath suggested, you can check out the document in the ItemAdded event, then add ItemCheckedout event, in the ItemCheckedout event, delete the document. Or as content organizer rule does, you can create your own timer job to move
the document.
More information, Content Organizer Feature Overview for SharePoint Server 2010 Developers (ECM):
http://msdn.microsoft.com/en-us/library/office/ee558288(v=office.14).aspx
Thanks,
Qiao Wei
TechNet Community Support

File Upload applet not opening in Query Mode

File Upload Applet is opening in Query Mode in Siebel 7.5, where as in Siebel 7.8 its not opening in Query Mode.
Should anything be changed in CFG? or siebel restricted this?

Hi,
There is a property called "Auto Query Mode" in the applet. Check whether this has been set to "New Query" in 7.5. If so the applet will be opening in Query Mode automatically. If this property is blank, in 7.8, the applet will not be opening in Query mode. Check and let me know.
Regards,
Joseph

Multiple File Upload Applet

I am attempting to code a JavaBean wrapped by an applet that will upload multiple files to a web server via the multipart/form-data mime-type.
I have moved a number of files to the web server with limited success.
I cannot move more than roughly 30Mbs of files in any configuration without causing a fatal exception.
I am confident that it is a limitation of the client's VM and the memory allocated to the applet.
I have seen several commercial grade applets that claim they can move any number of files even totalling 180Mbs.
My applet is very simple. It opens a JFileChooser dialog box, allowing the user to select multiple files and communicates directly to a server side component that accepts multipart/form-data.
I am navigating the protocol just fine. It seems to be a memory problem on the client side. Does anyone know how I can defeat this restriction and pass a reasonably high number of files (100-200) ranging from 50Mbs to 180+Mbs?
Secondly, why does this happen: when I put my files onto the output stream, no files move accros the stream until I call .close(). How can I write the code to begin transferring bytes as soon as I call outputstream.write(xxx)?

i am also developing multiple file upload applet and i transferred 1,4gb of data (2 files a 700MB) successfully.
also, i just transferred a few hundred files with total size of 900mb to my localhost webserver (~5000kb/s)
1) open file
2) read a few kilobytes into buffer
3) send them to the server
4) flush the outputstream (!!)
5) clear buffer and goto 2)
6) if end-of-file, close the file and flush again.
the outputstream is flushed every few kilobytes, so it will be sent over the socket to the server and not buffered until dawn.
i don't know how the server-side is working, but i used apache/php script.
you can try out my applet under
http://www.haller-systemservice.net/jupload/

File upload applet without browsing

hi all,
i m a php developer, i need a java applet to be embedded in html, that contains a button (upload), on clicking that all text files from a predefined location, without browsing, in the clients computer could be uploaded to server.
help me from the scratch.
thankyou

Applets are a PITA. Applets that deal with the local file system need to have 'full trust' and that is a complete PITA, especially with the Vista UAC problem that restricts even trusted applets to a particular set of sub-directories (in user.home, AFAIR).
A better strategy might exist if you can..
a) write to a ZIP archive from PHP? (which can reduce all the reports to being contained in a single file*).
b) Invoke 'shell commands' from PHP, as you might from the command line interface, the Windows Command Prompt?
If both those answers are 'yes', I would recommend dumping the applet for a JWS launched application that uses the JNLP API's [file service|http://pscode.org/jws/api.html#fs].
Try especially the sandboxed version of the demo.
Using webstart, this might all be achieved 'sandboxed'.
It would work like this.
The PHP script writes all the reports to a single zip archive with file extension '.reportarchive' instead of '.zip'.
After the reports are prepared and stored, two shell commands are required.
javaws -import -association -silent http://www.our.com/upload.jnlp
..and..
javaws -open C:/the/path/the.reportarchive http://www.our.com/upload.jnlp
The first installs the uploader application to the user cache, while the second tells webstart to open the uploader app. with the reportarchive file name as the runtime argument.
Once the user has OK'd the access to the reportarchive, the rest (uploading it) can be done automatically (with a progress bar).
* Note that if you cannot easily write a Zip using PHP (shrugs) that .reportarchive file type might instead be a .reportlist which simply contains the path/names of the other report files.
If the user fails to select the 'always allow' option for the file list, they will be prompted for each file (until they do). The advantage of the archive is that the user is only ever asked once.
And as an aside, how exactly is the PHP script invoked to run?
Note that a good way to indicate interest in a solution is to add [Duke stars|http://wikis.sun.com/display/SunForums/Duke+Stars+Program+Overview] to match that interest.

Help! ... file upload applet

Hey
I am searching the net for a couple of days now ... I need to find a solution for uploading files without the user browsing for them.
I can't use the <input type="file"> so I turned to activex and applets...
I would like to build an applet which throught javascript specify a path for it and then the applet will send the files one by one to the server.
I tried to read the files as binary with the activex adodb.stream with no luck!
I don't know what else to do ! ... please please help me!
I am willing to try anything to solve this problem
Thanks a lot!!

You can do it with an outputstream and an inputstream....
in the applet (put this in a thread):
URL url = new URL("www.abc.com/yourservleturl");
URLConnection urlConnection = url.openConnection();
urlConnection.setDoOutput(true);
urlConnection.connect();
OutputStream out = urlConnection.getOutputStream()
BufferedOutputStream bos = new BufferedOutputStream(out);
File file = new File("your local file");
InputStream in = new FileInputStream(file);
BufferedInputStream bis = new BufferedInputStream(in);
int i = 0;
while((i = bis.read()) != -1) {
bos.write(i);
bos.flush();in the Servlet:
BufferedInputStream bis = new BufferedInputStream(request.getInputStream());
bis.read(); // here you get your file........ do whatever you want........

How to allow user upload file on applet??

Sorry I'm new to programming here, but I'm trying to allow user to upload a file to the server so the program inside the server can user the file as input.
I've noticed that JFileChooser, the ideal class for this, is not allowed on the applet, so I don't know how to go about doing this.
Thanks for any input!

ok
you wish to transfer a file from applet to server.
1. Applet gets the file
the applet needs to access the file System therefor it must b a signed applet to get aound the security restrictions. This is why the JFileChooser doesn't work. Check out the tutorials on jars and applets, particularly the security notes.
2. opens a connection with the server
so the applet has a file and needs to send it. there needs to be a service of some form on the destination computer to execpt the file. Perhaps you write your own perhaps you use HTTP.
3. server software stores the file
where an applet is an mini application that runs within the confines of the web browser. a SERVLET is a service program which runs with in the confines of a server, such as a web server.
this is a lot easier to do HTML rather that applet in my opinion but which ever.

Interakt File Upload incompatible with Firefox? Recommend ASP Upload tool?

Hi,
I've been using Interakt's File Upload tool for quite some
time but have
recently been made aware that it doesn't work in Firefox!
Anyway, I notice that Interakt no longer exist now, having
been bought out
by Adobe some time ago as it turns out.
Has anyone experienced this problem and found a solution?
Adobe aren't
offering any support for the Interakt products and no-one is
answering, or
even looking at, their forums.
My feeling is that I'll need to just scrap the Interakt
extension and try
something else? Can anyone recommend a good File Upload
extension for
Dreamweaver ASP/VBScript?
Please do not recommend DMX Zone as I am looking for a
company that actually
provides customer support for their products!
Thanks for any advice offered. Much appreciated
Nath.

Hi Joris,
Is the Adobe Dreamweaver Developer Toolkit included with
Dreamweaver CS3?
I'm using Dreamweaver 8.0.2 at the moment, but I would
upgrade to CS3 if it
included the Developer Toolkit. If not, it would appear that
Adobe want
$299 for it, although I'm in the UK, so it'll probably be
double that! :o(
I was previously using Interakt's File Upload
behaviour/extension, but the
re-direct code isn't Firefox compatible, so it doesn't
re-direct correctly:


<%
'Make a transaction dispatcher instance
Dim tNGs: Set tNGs = new tNG_dispatcher
tNGs.Init ""
%>
<%
'start Trigger_FileUpload trigger
'remove this line if you want to edit the code by hand
Function Trigger_FileUpload (ByRef tNG)
Dim uploadObj: Set uploadObj = new tNG_FileUpload
uploadObj.Init tNG
uploadObj.setFormFieldName "imageone"
uploadObj.setDbFieldName "imageone"
uploadObj.setFolder "itemphotos/"
uploadObj.setMaxSize 1000
uploadObj.setAllowedExtensions "jpg, gif, jpeg"
uploadObj.setRename "auto"
Set Trigger_FileUpload = uploadObj.Execute()
End Function
'end Trigger_FileUpload trigger
%>
<%
'start Trigger_Custom trigger
Function Trigger_Custom (ByRef tNG)
query = "SELECT rowID FROM table WHERE rowID = " &
Session("rowIDsess")
On Error Resume Next
Set rsCheck = tNG.connection.Execute(query)
if (Err.Number <> 0) OR (Not rsCheck.EOF) then
KT_redir("confirmation.asp")
else
Set Trigger_Custom = nothing
end if
On Error GoTo 0
End Function
'end Trigger_Custom trigger
%>
As you can see, it should redirect to confirmation.asp, but
this doesn't
work in Firefox - it just loads a blank white page! Do you
have a re-direct
selected in your form using Kollection 3.7.1? Does it work?
Is my code
vastly different to what you've got?
I purchased Advanced HTML Editor from DMX Zone, experienced a
problem with
it, sent e-mails and posted on their forum. I did not receive
ONE reply. I
won't be back.
Would appreciate any help you could offer.
Thank you.
Nathon.
> Some of the interakt products are now sold as Adobe
Dreamweaver Developer
> Toolkit,
> using Kollection 3.7.1 I can't reproduce not being able
to upload in
> Firefox on Mac and Windows.
>
> I have good experiences with DMXZone support, why are
you suggesting
> they're not providing support?

Upload http file using applet

Hello every body,
I am trying to upload the http file using applet. Can any body give me the hint or example.
Thanks in advance
best regards

any of several libraries are out there that would let you to HTTP File Upload to a web server, assuming the web server has a servlet or other thing to accept the file.
Of course, where you get the file might be a problem without a signed applet.

File Uploader Java Applet cannot be run

I have a website that I need to upload PDFs to, but since ugrading to Lion, I cannot do it any more. I have downloaded the separte Java app, but it still does not work.
This is the error message I get:
File Uploader Java Applet cannot be run. Make sure that Java is installed on your PC and Java applets are permitted in browser settings. Use this link to download and install appropriate version of Java:

Thank you etresoft - that did not solve the problem. However, I did fix it by changing something in Java Preferences (which is located in the Utilities Folder).
I first deleted the cache files as you suggested in the Network tab. Then I quit and restarted Firefox. I still got the same error message when I tried to upload.
Then, I went back into Java Preferences and checked the box, "Enable Appplet Plug-in and Webstart Applications" located in the General Tab. I then quit and restarted Firefox. Now I am able to upload documents as I could before Lion.
Thank you!!

File upload using applet and opera

Hello All
I am uploading file using applet it is working file in the IE and Mozilla firefox but it doesn't work in the opera , The client is sending request but server doesn't respond it , why it should be happening with opera only . i am using jre1.6 , applet is loading successfully . But while uploading file response from server is not occur.
please post u r comments.

On the server side, you'll probably want to grab a 3rd party library for handling the multipart request.
This one is very popular and has sample code in its documentation that should get you going pretty quickly.
http://jakarta.apache.org/commons/fileupload
For the client side, this question would probably do better in an applet forum.
One obstacle you'll need to deal with is the applet sandbox. By default, Applets have no access to the client machine's file system. You'll either need a signed applet that will prompt the user for permissions to access files or you'll need your clients to install a security policy that allows your applets to do this.
Again, these details will be better worked out in an applet forum.
-Ben

Can anyone recommend a free file uploader with progress bar?

Can anyone recommend a free file uploader with progress bar?
I have searched google but with no luck.
Ideally it would be a DW extension but that might be wishing
for too much.
I would like a large file limit for video and multiple file
extensions allowed.
Thanks in advance

Heya,
Check out this due Waleed he has some nice tuts and here's
a
link
to file upload with progress bar tutorial he has. Granted it
looks like it's just an animated gif letting users know their file
is uploading; if you want realtime upload information displayed for
the user you're gonna have to look at something like Flash with the
power of actionscript to achieve that result.
Hope that helps!

Applet for multiple file upload

Hi All
I have a requirement for multiple file upload where user can select multiple files as well as folders.
Would appreciate any pointers.
Thanks.

Google "java file upload"

Useful Code of the Day: Multipart Form File Upload

So, you want to upload files to your web server, do ya? Well, I've seen this topic posted a few times in the last month or so and many of the response I've seen here haven't included definitive answers. Of course, the actual problems vary, but ultimately, a bunch of people want to do file upload from an applet or application to an existing file upload script (CGI, PHP, JSP, etc.) on a web server. And invariably, there are problems with formatting the HTTP request to get things working.
Well, I had a need to do the same thing. I realize there are other solutions out there, such as some sample code that comes with Jakarta Commons Upload. But since we all like reusable code, and we also all seem to like reinventing wheels, here's my go at it: MultiPartFormOutputStream!
MultiPartFormOutputStream is a specialized OutputStream-like class. You create your URLConnection to the server (a static method included can do this for a URL for you, as some of the settings, doInput and doOutput specifically, seem to confuse people). Then get the OutputStream from it and create a boundary string (a static method to create one is provided as well) and pass them to the constructor. Now you have a MultiPartFormOutputStream which you can use to write form fields like text fields, checkboxes, etc., as well as write file data (from Files, InputStreams or raw bytes).
There are some convenience methods for writing primative type values as well as strings, but any higher level objects (aside from Files or InputStreams) aren't supported. (You can always serialize and pass the raw bytes.)
Sample usage code is below. Also, any recommendations for improvement are requested. The code was tested with the Jakarta Struts.
import java.io.*;
import java.net.*;
* <code>MultiPartFormOutputStream</code> is used to write
* "multipart/form-data" to a <code>java.net.URLConnection</code> for
* POSTing. This is primarily for file uploading to HTTP servers.
* @since JDK1.3
public class MultiPartFormOutputStream {
 * The line end characters.
 private static final String NEWLINE = "\r\n";
 * The boundary prefix.
 private static final String PREFIX = "--";
 * The output stream to write to.
 private DataOutputStream out = null;
 * The multipart boundary string.
 private String boundary = null;
 * Creates a new <code>MultiPartFormOutputStream</code> object using
 * the specified output stream and boundary. The boundary is required
 * to be created before using this method, as described in the
 * description for the <code>getContentType(String)</code> method.
 * The boundary is only checked for <code>null</code> or empty string,
 * but it is recommended to be at least 6 characters. (Or use the
 * static createBoundary() method to create one.)
 * @param os the output stream
 * @param boundary the boundary
 * @see #createBoundary()
 * @see #getContentType(String)
 public MultiPartFormOutputStream(OutputStream os, String boundary) {
 if(os == null) {
 throw new IllegalArgumentException("Output stream is required.");
 if(boundary == null || boundary.length() == 0) {
 throw new IllegalArgumentException("Boundary stream is required.");
 this.out = new DataOutputStream(os);
 this.boundary = boundary;
 * Writes an boolean field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, boolean value)
 throws java.io.IOException {
 writeField(name, new Boolean(value).toString());
 * Writes an double field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, double value)
 throws java.io.IOException {
 writeField(name, Double.toString(value));
 * Writes an float field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, float value)
 throws java.io.IOException {
 writeField(name, Float.toString(value));
 * Writes an long field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, long value)
 throws java.io.IOException {
 writeField(name, Long.toString(value));
 * Writes an int field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, int value)
 throws java.io.IOException {
 writeField(name, Integer.toString(value));
 * Writes an short field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, short value)
 throws java.io.IOException {
 writeField(name, Short.toString(value));
 * Writes an char field value.
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, char value)
 throws java.io.IOException {
 writeField(name, new Character(value).toString());
 * Writes an string field value. If the value is null, an empty string
 * is sent ("").
 * @param name the field name (required)
 * @param value the field value
 * @throws java.io.IOException on input/output errors
 public void writeField(String name, String value)
 throws java.io.IOException {
 if(name == null) {
 throw new IllegalArgumentException("Name cannot be null or empty.");
 if(value == null) {
 value = "";
 --boundary\r\n
 Content-Disposition: form-data; name="<fieldName>"\r\n
 \r\n
 <value>\r\n
 // write boundary
 out.writeBytes(PREFIX);
 out.writeBytes(boundary);
 out.writeBytes(NEWLINE);
 // write content header
 out.writeBytes("Content-Disposition: form-data; name=\"" + name + "\"");
 out.writeBytes(NEWLINE);
 out.writeBytes(NEWLINE);
 // write content
 out.writeBytes(value);
 out.writeBytes(NEWLINE);
 out.flush();
 * Writes a file's contents. If the file is null, does not exists, or
 * is a directory, a <code>java.lang.IllegalArgumentException</code>
 * will be thrown.
 * @param name the field name
 * @param mimeType the file content type (optional, recommended)
 * @param file the file (the file must exist)
 * @throws java.io.IOException on input/output errors
 public void writeFile(String name, String mimeType, File file)
 throws java.io.IOException {
 if(file == null) {
 throw new IllegalArgumentException("File cannot be null.");
 if(!file.exists()) {
 throw new IllegalArgumentException("File does not exist.");
 if(file.isDirectory()) {
 throw new IllegalArgumentException("File cannot be a directory.");
 writeFile(name, mimeType, file.getCanonicalPath(), new FileInputStream(file));
 * Writes a input stream's contents. If the input stream is null, a
 * <code>java.lang.IllegalArgumentException</code> will be thrown.
 * @param name the field name
 * @param mimeType the file content type (optional, recommended)
 * @param fileName the file name (required)
 * @param is the input stream
 * @throws java.io.IOException on input/output errors
 public void writeFile(String name, String mimeType,
 String fileName, InputStream is)
 throws java.io.IOException {
 if(is == null) {
 throw new IllegalArgumentException("Input stream cannot be null.");
 if(fileName == null || fileName.length() == 0) {
 throw new IllegalArgumentException("File name cannot be null or empty.");
 --boundary\r\n
 Content-Disposition: form-data; name="<fieldName>"; filename="<filename>"\r\n
 Content-Type: <mime-type>\r\n
 \r\n
 <file-data>\r\n
 // write boundary
 out.writeBytes(PREFIX);
 out.writeBytes(boundary);
 out.writeBytes(NEWLINE);
 // write content header
 out.writeBytes("Content-Disposition: form-data; name=\"" + name +
 "\"; filename=\"" + fileName + "\"");
 out.writeBytes(NEWLINE);
 if(mimeType != null) {
 out.writeBytes("Content-Type: " + mimeType);
 out.writeBytes(NEWLINE);
 out.writeBytes(NEWLINE);
 // write content
 byte[] data = new byte[1024];
 int r = 0;
 while((r = is.read(data, 0, data.length)) != -1) {
 out.write(data, 0, r);
 // close input stream, but ignore any possible exception for it
 try {
 is.close();
 } catch(Exception e) {}
 out.writeBytes(NEWLINE);
 out.flush();
 * Writes the given bytes. The bytes are assumed to be the contents
 * of a file, and will be sent as such. If the data is null, a
 * <code>java.lang.IllegalArgumentException</code> will be thrown.
 * @param name the field name
 * @param mimeType the file content type (optional, recommended)
 * @param fileName the file name (required)
 * @param data the file data
 * @throws java.io.IOException on input/output errors
 public void writeFile(String name, String mimeType,
 String fileName, byte[] data)
 throws java.io.IOException {
 if(data == null) {
 throw new IllegalArgumentException("Data cannot be null.");
 if(fileName == null || fileName.length() == 0) {
 throw new IllegalArgumentException("File name cannot be null or empty.");
 --boundary\r\n
 Content-Disposition: form-data; name="<fieldName>"; filename="<filename>"\r\n
 Content-Type: <mime-type>\r\n
 \r\n
 <file-data>\r\n
 // write boundary
 out.writeBytes(PREFIX);
 out.writeBytes(boundary);
 out.writeBytes(NEWLINE);
 // write content header
 out.writeBytes("Content-Disposition: form-data; name=\"" + name +
 "\"; filename=\"" + fileName + "\"");
 out.writeBytes(NEWLINE);
 if(mimeType != null) {
 out.writeBytes("Content-Type: " + mimeType);
 out.writeBytes(NEWLINE);
 out.writeBytes(NEWLINE);
 // write content
 out.write(data, 0, data.length);
 out.writeBytes(NEWLINE);
 out.flush();
 * Flushes the stream. Actually, this method does nothing, as the only
 * write methods are highly specialized and automatically flush.
 * @throws java.io.IOException on input/output errors
 public void flush() throws java.io.IOException {
 // out.flush();
 * Closes the stream. 
 * 
 * NOTE: This method MUST be called to finalize the
 * multipart stream.
 * @throws java.io.IOException on input/output errors
 public void close() throws java.io.IOException {
 // write final boundary
 out.writeBytes(PREFIX);
 out.writeBytes(boundary);
 out.writeBytes(PREFIX);
 out.writeBytes(NEWLINE);
 out.flush();
 out.close();
 * Gets the multipart boundary string being used by this stream.
 * @return the boundary
 public String getBoundary() {
 return this.boundary;
 * Creates a new <code>java.net.URLConnection</code> object from the
 * specified <code>java.net.URL</code>. This is a convenience method
 * which will set the <code>doInput</code>, <code>doOutput</code>,
 * <code>useCaches</code> and <code>defaultUseCaches</code> fields to
 * the appropriate settings in the correct order.
 * @return a <code>java.net.URLConnection</code> object for the URL
 * @throws java.io.IOException on input/output errors
 public static URLConnection createConnection(URL url)
 throws java.io.IOException {
 URLConnection urlConn = url.openConnection();
 if(urlConn instanceof HttpURLConnection) {
 HttpURLConnection httpConn = (HttpURLConnection)urlConn;
 httpConn.setRequestMethod("POST");
 urlConn.setDoInput(true);
 urlConn.setDoOutput(true);
 urlConn.setUseCaches(false);
 urlConn.setDefaultUseCaches(false);
 return urlConn;
 * Creates a multipart boundary string by concatenating 20 hyphens (-)
 * and the hexadecimal (base-16) representation of the current time in
 * milliseconds.
 * @return a multipart boundary string
 * @see #getContentType(String)
 public static String createBoundary() {
 return "--------------------" +
 Long.toString(System.currentTimeMillis(), 16);
 * Gets the content type string suitable for the
 * <code>java.net.URLConnection</code> which includes the multipart
 * boundary string. 
 * 
 * This method is static because, due to the nature of the
 * <code>java.net.URLConnection</code> class, once the output stream
 * for the connection is acquired, it's too late to set the content
 * type (or any other request parameter). So one has to create a
 * multipart boundary string first before using this class, such as
 * with the <code>createBoundary()</code> method.
 * @param boundary the boundary string
 * @return the content type string
 * @see #createBoundary()
 public static String getContentType(String boundary) {
 return "multipart/form-data; boundary=" + boundary;
}Usage: (try/catch left out to shorten the post a bit)
URL url = new URL("http://www.domain.com/webems/upload.do");
// create a boundary string
String boundary = MultiPartFormOutputStream.createBoundary();
URLConnection urlConn = MultiPartFormOutputStream.createConnection(url);
urlConn.setRequestProperty("Accept", "*/*");
urlConn.setRequestProperty("Content-Type",
 MultiPartFormOutputStream.getContentType(boundary));
// set some other request headers...
urlConn.setRequestProperty("Connection", "Keep-Alive");
urlConn.setRequestProperty("Cache-Control", "no-cache");
// no need to connect cuz getOutputStream() does it
MultiPartFormOutputStream out =
 new MultiPartFormOutputStream(urlConn.getOutputStream(), boundary);
// write a text field element
out.writeField("myText", "text field text");
// upload a file
out.writeFile("myFile", "text/plain", new File("C:\\test.txt"));
// can also write bytes directly
//out.writeFile("myFile", "text/plain", "C:\\test.txt",
// "This is some file text.".getBytes("ASCII"));
out.close();
// read response from server
BufferedReader in = new BufferedReader(
 new InputStreamReader(urlConn.getInputStream()));
String line = "";
while((line = in.readLine()) != null) {
 System.out.println(line);
in.close();------
"Useful Code of the Day" is supplied by the person who posted this message. This code is not guaranteed by any warranty whatsoever. The code is free to use and modify as you see fit. The code was tested and worked for the author. If anyone else has some useful code, feel free to post it under this heading.

I have a weird problem here. I'm using the Java POST (slightly altered for my purposes) mechanism but the receiving script doesn't receive any form variables (neither files nor regular form fields). If I try using the same receiving script with a regular upload form, it works. Because I've been pulling my hair out, I even went so far as to analyze the ip-packets. I can see that the file is actually sent through the Java POST mecahnism. Anybody any ideas. Here's the ip-packet of the failing upload:
----- Hypertext Transfer Protocol -----
HTTP: POST /fotoxs/upload.cfm HTTP/1.1
HTTP: Connection: Keep-Alive
HTTP: Content-Type: multipart/form-data; boundary=-----------------------------fb2649be18
HTTP: User-Agent: Mozilla/4.7 [en] (WinNT; U)
HTTP: Accept-Language: en-us
HTTP: Accept-Encoding: gzip, deflate
HTTP: Accept: image/gif, image/jpeg, image/pjpeg, */*
HTTP: CACHE-CONTROL: no-cache
HTTP: Host: newmarc
HTTP: Content-Length: 15511
----- Hypertext Transfer Protocol -----
HTTP: -----------------------------fb2649be18
HTTP: Content-Disposition: form-data; name="uploadFile"; filename="out.jpg"
HTTP: Content-Type: image/jpeg
HTTP: Data
....[data packets]
The one that works (from the regular post) is as follows:
----- Hypertext Transfer Protocol -----
HTTP: POST /fotoxs/upload.cfm HTTP/1.1
HTTP: Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-gsarcade-launch, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
HTTP: Referer: http://localhost:8500/fotoxs/test.cfm
HTTP: Accept-Language: nl
HTTP: Content-Type: multipart/form-data; boundary=---------------------------7d41961f201c0
HTTP: Accept-Encoding: gzip, deflate
HTTP: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
HTTP: Host: newmarc
HTTP: Content-Length: 59022
HTTP: Connection: Keep-Alive
HTTP: Cache-Control: no-cache
----- Hypertext Transfer Protocol -----
HTTP: -----------------------------7d41961f201c0
HTTP: Content-Disposition: form-data; name="FiletoUpload"; filename="D:\My Documents\My Pictures\fotomarc.jpg"
HTTP: Content-Type: image/pjpeg
HTTP: Data
----- Hypertext Transfer Protocol -----
HTTP: HTTP/1.1 100 Continue
HTTP: Server: Microsoft-IIS/5.0
HTTP: Date: Sun, 07 Mar 2004 17:14:41 GMT
....[data packets]
One detail worth mentioning is that I don't read a file from harddisk, I'm streaming it directly to the connection outputstream from an image compression utility. But I can see the data in the ip-packets, and even if that somehow didn't work right, it doesn't explaing the fact that the receiving scripts reports no form fields whatsoever.
Thanks,
Marc

FILE UPLOAD PROBLEM SHOWING THE CONTENTS IN THE SAME BROWSER WINDOW

Hi,
This is amit Joshi
I have uploaded content using input tag of type file and posted to jsp as multipart/form-data type
in that jsp i am using following code to display the content in browser but only first content is displayed How can i modify it to show all content in the file ..
<html>
<head>
<title>File Upload Display</title>
</head>
<body>
<%
//ServletOutputStream sout=response.getOutputStream();
StringBuilder strBuilder = new StringBuilder();
int count=0;
String f;
f=request.getParameter("filedb");
DBManager dbm = new DBManager();
//dbm.createTable("mms3");
//log.info("In JSP : "+ f);
//dbm.insert_data(f,"mms3");
%>
<%
if (ServletFileUpload.isMultipartContent(request)){
ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
List fileItemsList = servletFileUpload.parseRequest(request);
strBuilder.append("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>").append('\r').append('\n').append("<xpage version=\"1.0\">").append('\r').append('\n');
String optionalFileName = "";
FileItem fileItem = null;
Iterator it = fileItemsList.iterator();
ServletOutputStream outputStream=null;
while (it.hasNext()){
FileItem fileItemTemp = (FileItem)it.next();
if (fileItemTemp.isFormField()){
%>
Name-value Pair Info:
Field name: <%= fileItemTemp.getFieldName() %>
Field value: <%= fileItemTemp.getString() %>
<%
if (fileItemTemp.getFieldName().equals("filename"))
optionalFileName = fileItemTemp.getString();
else
fileItem = fileItemTemp;
if (fileItem!=null){
String fileName = fileItem.getName();
%>
Uploaded File Info:
Content type: <%= fileItem.getContentType() %>
Field name: <%= fileItem.getFieldName() %>
File name: <%= fileName %>
<%
if(fileItem.getContentType().equals("image/jpeg")) { %>
File : <%
 //response.setContentType("image/gif");
 byte[] bArray=fileItem.get();
 response.setContentType("image/jpeg");
 outputStream=null;
 outputStream= response.getOutputStream();
 outputStream.write(bArray);
 outputStream.flush();
 outputStream.close();
else if(fileItem.getContentType().equals("text/plain"))
 %> File : <%= fileItem.getString() %>
<%
byte[] bArray=fileItem.get();
response.setContentType("text/plain");
 outputStream = response.getOutputStream();
 out.println();
 outputStream.write(bArray);
 outputStream.flush();
 outputStream.close();
%> <%
%>
</body>
</html>
Edited by: Amit_Joshi on Nov 13, 2007 10:58 PM

Well Well Well..
That would not work...
What you have to do is save the uploaded file content on to a location and then pass the fileName as a request parameter to a deidicated which displays the contents of that file.
Just as an example
<html>
<head>
<title>File Upload Display</title>
</head>
<body>
<%
//ServletOutputStream sout=response.getOutputStream();
StringBuilder strBuilder = new StringBuilder();
int count=0;
String f;
f=request.getParameter("filedb");
DBManager dbm = new DBManager();
//dbm.createTable("mms3");
//log.info("In JSP : "+ f);
//dbm.insert_data(f,"mms3");
%>
<%
if (ServletFileUpload.isMultipartContent(request)){
ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());
List fileItemsList = servletFileUpload.parseRequest(request);
strBuilder.append("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>").append('\r').append('\n').append("<xpage version=\"1.0\">").append('\r').append('\n');
String optionalFileName = "";
FileItem fileItem = null;
Iterator it = fileItemsList.iterator();
ServletOutputStream outputStream=null;
while (it.hasNext()){
 FileItem fileItemTemp = (FileItem)it.next();
%>
Name-value Pair Info:
Field name: <%= fileItemTemp.getFieldName() %> 
Field value: <%= fileItemTemp.getString() %> 
<%
if (fileItemTemp.getFieldName().equals("filename"))
 optionalFileName = fileItemTemp.getString();
if(!fileTempItem.isFormFiled()){
 String fileName = fileItem.getName();
 fileItem.write(optionalFileName);
%>
Uploaded File Info:
Content type: <%= fileItem.getContentType() %> 
Field name: <%= fileItem.getFieldName() %> 
File name: <%= fileName %> 
<%
if(fileItem.getContentType().equals("image/jpeg") || fileItem.getContentType().equals("image/pjeg")) {
%>
<img src="FileServlet?fileName=<%=optionalFileName%>"
<%
%>
</body>
</html>a sample code snippet for FileServlet.
String fileName = request.getParameter(fileName);
File file = new File(fileName);
 if(!file.exists())
 return;
// If JSP
String mimeType = application.getMimeType("fileName");
 If you are using servlet
 String mimeType = this.getServletContext().getMimeType(fileName);
 response.setContentType(mimeType);
 response.setHeader("Content-Disposition","inline;filename=\\"+fileName+"\\");
BufferedOutputStream out1 = null;
InputStream in = null;
if(mimeType == null)
 mimeType = "application/octet-stream";
try{
 in = new FileInputStream(f);
 response.setContentLength(in.available());
 BufferedOutputStream out1 = new BufferedOutputStream(response.getOutputStream(),1024);
 int size = 0;
 byte[] b = new byte[1024];
 while ((size = in.read(b, 0, 1024)) > 0)
 out1.write(b, 0, size);
}catch(Exception exp){
}finally{
 if(out1 != null){
 try{
 out1.flush();
 out1.close();
 }catch(Exception e){}
 if(in != null){
 try{in.close();}catch(Exception e){}
} Hope that might answer your question :)
However,this is not the recommended way of doing this make use of MVC pattern.Would be a better approach.
you might think of googling on this and can findout what is the best practise followed for problems of this sort
REGARDS,
RaHuL

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