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

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Getting java.io.IOException: Too many open files+ClassNotFoundException

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(source unavailable)
1 error
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Java.io.IOException: Too many open files while deploying in soa 11g

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package forums.crap;
import java.io.*;
import java.util.*;
public class TooManyFileHandles
private static final int HOW_MANY = 8*1024;
public static void main(String[] args) {
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        for (PrintWriter w : writers) {
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    } catch (Exception e) {
      e.printStackTrace();
}... and the problem still isn't OOME ;-)
Cheers. Keith.

Java.io.IOException: Too many open files

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import java.io.IOException;
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hi,
domRegisterCmd = "sh /home/kesharil/DomainRenew/n4vrsgn/DomainRenew-n4vrsgn.sh{code}
you are opening the above file and not closing,,
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OSB is throwing java.io.IOException: Failed to rename file

Hi,
I'm getting the below error when I try to deploy the OSB code changes via OEPE:
+<Error> <ConfigFwk> <D---00146903> <AdminServer> <[ACTIVE] ExecuteThread: '5' for queue: 'weblogic.kernel.Default (self-tuning)'> <admin> <> <d71c3b335fa8baa2:39d72cb4:13951f6b38f:-8000-00000000000000bf> <1345702069308> <BEA-000000> <Failed to commit changes to file D:\Oracle\Middleware\user_projects\domains\base_domain\osb\config\sessions\ALSB_IDE_Internal_PublishOp_1345525-4159\_binary\SessionData\singleton+
java.io.IOException: Failed to rename file 'D:\Oracle\Middleware\user_projects\domains\base_domain\osb\config\sessions\ALSB_IDE_Internal_PublishOp_1345525-4159\_binary\SessionData\singleton.gz.upd~' to 'D:\Oracle\Middleware\user_projects\domains\base_domain\osb\config\sessions\ALSB_IDE_Internal_PublishOp_1345525-4159\_binary\SessionData\singleton'
+     at com.bea.wli.config.transaction.TransactionalFileManager._renameFile(TransactionalFileManager.java:1660)+
+     at com.bea.wli.config.transaction.TransactionalFileManager.commitFile(TransactionalFileManager.java:448)+
+     at com.bea.wli.config.transaction.TransactionalFileManager.commit(TransactionalFileManager.java:320)+
+     at com.bea.wli.config.transaction.TransactionalFileManager.commit(TransactionalFileManager.java:298)+
+     at com.bea.wli.config.transaction.TransactionManager.commit(TransactionManager.java:1495)+
+     at com.bea.wli.config.transaction.TransactionManager._endTransaction(TransactionManager.java:842)+
+     at com.bea.wli.config.transaction.TransactionManager.endTransaction(TransactionManager.java:783)+
+     at com.bea.wli.config.deployment.server.ServerDeploymentReceiver$2.run(ServerDeploymentReceiver.java:275)+
+     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)+
+     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)+
+     at com.bea.wli.config.deployment.server.ServerDeploymentReceiver.commit(ServerDeploymentReceiver.java:260)+
+     at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:195)+
+     at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:13)+
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+>+
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Please help me to resolve this issue.
Thanks,
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Hari,
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Regards,
Anuj

Java.io.IOException in file upload: WLS 5.1 on Unix

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

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

File Upload: Please Help

Hi Ppl, Will midp allow me to write an application that can upload a file preferably less than 100kb in a file server.

Unless you're required to use FTP, it might be worth looking at doing the upload via an HTTP POST. Look at [RFC 1867 - Form-based File Upload in HTML|http://www.ietf.org/rfc/rfc1867.txt]. This is fairly easy to implement on the client side, and since it's the same technique that browsers use for file upload, there's usually a straightforward way to implement server side support. There's some sample code for a servlet to receive the file at [http://www.servlets.com/cos/|http://www.servlets.com/cos/].

HELP !...getting ERROR: java.io.IOException: CreateProcess: ... error=3

I use stand alone "XMLBeans survival kit" ( which I downloaded on 11/1/03 from
BEA site ). I use its xmlbean.jar and it works fine. I did not use its "scomp"
utility until today ( I used BEA's on-line compiler and it worked just great ).
When I tried to use the stand alone "scomp" , I've got into trouble. Here is the
trace of the error I receive for all schemas including the example schema ( I
have followed the instructions described in the attached README file for the environment
configuration) :
C:\WSAD_Workspaces\dc_xml_beans\xml_to_java\test>scomp -out myeasypo.jar C:\XMLBeanToolkit\xkit\schemas\easypo
Loading schema file C:\XMLBeanToolkit\xkit\schemas\easypo\easypo.xsd
Loading config file C:\XMLBeanToolkit\xkit\schemas\easypo\easypo.xsdconfig
Time to build schema type system: 1.297 seconds
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.1_05\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\a337335\LOCALS~1\Temp\javac31952 error=3
null
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.1_05\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\a337335\LOCALS~1\Temp\javac31952 error=3
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Win32Process.java:67)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:491)
at java.lang.Runtime.exec(Runtime.java:457)
at com.bea.xbean.tool.CodeGenUtil.externalCompile(CodeGenUtil.java:167)
at com.bea.xbean.tool.SchemaCodeGenerator.compileTypeSystem(SchemaCodeGenerator.java:178)
at com.bea.xbean.tool.SchemaCompiler.compileImpl(SchemaCompiler.java:547)
at com.bea.xbean.tool.SchemaCompiler.main(SchemaCompiler.java:141)
BUILD FAILED
Please, help me to find what is wrong here !!!
Thank you,
- Michael P.
[README.txt]

Sorry, folks, the answer was quite simple: the default scomp script has pointed
to "wrong" location for java.exe. In particular, the scrip has specified compilation
command like this:
java -classpath %cp% com.bea.xbean.tool.SchemaCompiler %*
while it had to specify path to the java.exe based on JAVA_HOME env. variable
( I am saying "had" because README instructions state that the JAVA_HOME has to
be properly configured ). So, the solution looks like:
%JAVA_HOME%\bin\java -classpath %cp% com.bea.xbean.tool.SchemaCompiler %*
- Michael P.
"Michael P." <[email protected]> wrote:
>
>
>
I use stand alone "XMLBeans survival kit" ( which I downloaded on 11/1/03
from
BEA site ). I use its xmlbean.jar and it works fine. I did not use its
"scomp"
utility until today ( I used BEA's on-line compiler and it worked just
great ).
When I tried to use the stand alone "scomp" , I've got into trouble.
Here is the
trace of the error I receive for all schemas including the example schema
( I
have followed the instructions described in the attached README file
for the environment
configuration) :
C:\WSAD_Workspaces\dc_xml_beans\xml_to_java\test>scomp -out myeasypo.jar
C:\XMLBeanToolkit\xkit\schemas\easypo
Loading schema file C:\XMLBeanToolkit\xkit\schemas\easypo\easypo.xsd
Loading config file C:\XMLBeanToolkit\xkit\schemas\easypo\easypo.xsdconfig
Time to build schema type system: 1.297 seconds
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.1_05\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\a337335\LOCALS~1\Temp\javac31952 error=3
null
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.1_05\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\a337335\LOCALS~1\Temp\javac31952 error=3
at java.lang.Win32Process.create(Native Method)
at java.lang.Win32Process.<init>(Win32Process.java:67)
at java.lang.Runtime.execInternal(Native Method)
at java.lang.Runtime.exec(Runtime.java:566)
at java.lang.Runtime.exec(Runtime.java:491)
at java.lang.Runtime.exec(Runtime.java:457)
at com.bea.xbean.tool.CodeGenUtil.externalCompile(CodeGenUtil.java:167)
at com.bea.xbean.tool.SchemaCodeGenerator.compileTypeSystem(SchemaCodeGenerator.java:178)
at com.bea.xbean.tool.SchemaCompiler.compileImpl(SchemaCompiler.java:547)
at com.bea.xbean.tool.SchemaCompiler.main(SchemaCompiler.java:141)
BUILD FAILED
Please, help me to find what is wrong here !!!
Thank you,
- Michael P.

Help with file uploader, php script, Windows Authentication

I am trying to setup a really basic web-based file uploader that I will expand upon later. I have the flex application working well enough (very basic). However, I have a php script in a secure folder using windows authentication. When I try to send the file to the script, it doesn't seem to like my credentials, and refuses to do anything. I do not get an error message; just nothing happens.
My questions are:
Does anybody know where I should've looked before posting this thread?
Do I even have PHP set up correctly? (At first I just made a txt file and put a .php extension on it, then I tried to setup PHP on the server, but it was a little confusing for me)
Is Windows Authentication the problem?
I do plan on implementing SQL Server in the future (to keep track of Files and user-defined attributes for files), but I do not want to store the files in SQLserver, just their pathnames.
Is there a simple way to use ColdFusion (for free) to acheive this end?
I am somewhat experienced at coding applications, but am totally new to server-side scripts.
This is my php script:
<?php
$tempFile = $_FILES['Filedata']['tmp_name'];
$fileName = $_FILES['Filedata']['name'];
$fileSize = $_FILES['Filedata']['size'];
move_uploaded_file($tempFile, "./" . $fileName);
?>
This is my flex application:
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                  xmlns:s="library://ns.adobe.com/flex/spark"
                  xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<fx:Script>
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     private var uploadFilePath:String
     private function selectFile():void
          fileRef = new FileReference();
          fileRef.addEventListener(Event.SELECT, fileRef_select);
          fileRef.browse();
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          fileRef.upload(new URLRequest("http://SERVERLOCATION/PDFUploader.php"));
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</fx:Script>
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</s:Application>
Thanks to any who take the time to respond.

Hey, so far all I have found is this tutorial.. I'm about to try it out
http://www.smartwebby.com/Flash/external_data.asp

Java.io.IOException: CreateProcess............

Hello,
I got this exception when I ran my build file on Eclipse. If I ran it outside
Eclipse,
everything works fine.
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.2\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\javac53402 error=3
The error comes from the following place:
[xmlbean] at com.bea.xbean.tool.CodeGenUtil.externalCompile(CodeGenUtil.java:167)
It seems the above method is not getting the correct "java.home", it should get
jdk/bin/javac.
Can anyone give a pointer on this?
thanks,

Hello,
I got this exception when I ran my build file on Eclipse. If I ran it outside
Eclipse,
everything works fine.
java.io.IOException: CreateProcess: "C:\Program Files\Java\j2re1.4.2\..\bin\javac.exe"
-J-Xmx256M @C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\javac53402 error=3
The error comes from the following place:
[xmlbean] at com.bea.xbean.tool.CodeGenUtil.externalCompile(CodeGenUtil.java:167)
It seems the above method is not getting the correct "java.home", it should get
jdk/bin/javac.
Can anyone give a pointer on this?
thanks,

File upload program by jsf

I am doing one file upload program using
<af:inputFile label="File to Upload" columns="90"
value="#{FileProcessor.uploadedFile}"/>
component..
in Jdeveloper 11g i am getting the correct result,
but when i'm tryin to run it in Jdeveloper jdevstudio10131 it is giving this error.
java.io.EOFException: Per-request disk space limits exceeded. at oracle.adfinternal.view.faces.webapp.UploadedFileImpl.loadFile(UploadedFileImpl.java:187) at
i want this file upload application to run in ecplise..but there it is not working..do i need so some to import some jar files??
tomat 5.0 i'm using there..
Or is there any otherway to upload file using jsf component which should work in eclipse-tomcat enviornment also..
please help
thanks

Mr BalusC,
Yes Iam talking about a custom made upload component. The fileupload tutorials u send are good but my requirement is not meeting them. Among my requirements one is mutilple file uploads in the single view page. This is possible at present with my custom upload componet. Only if the problem gets solved. Any way once again please think on my problem and give your solution on it.
Here is my problem:
The problem is I have to access the components from view page which this kind of requirement possible in jsp by request parsing which results the key value pairs of the form components. This same thing/way I should get in backing bean from JSF view page.
The solution I want may like as follows.
Note this code is incorrect and wrong but for to understand my requirement.
someobject.getComponentIdValue("clientID"); which returns a string value as d:\images\Tutle.jpg
The clientID is upload file component' Id . In the request it may be the key associated with value as file complete path. By this kind of way my upload filter is able to get the orignal file. Ok i need this in my backing bean to get the orignal filename to insert into the database. Please for this give the solution or reply.many thanx,
vijaycanaan.

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

Build Failed: java.io.IOException: CreateProcess

Hi,
Would someone help me on my problem. I had encountered a "java.io.IOException: CreateProcess" when the ant script was about to execute the lines below:
<java classname="AllTests" fork="true" failonerror="yes">
     <classpath>
          <path refid="all.classpath" />
          <path refid="emma.coverage.classes" />
          <pathelement location="${emma.instr}" />
          <pathelement location="${classes.temp}" />
     </classpath>
     <jvmarg
          value="-Demma.coverage.out.file=${emma.coverage}/coverage.emma" />
     <jvmarg value="-Demma.coverage.out.merge=true" />
</java>
The result and the message was stated below.
BUILD FAILED
C:\RAD901\build\emma-build.xml:89: java.io.IOException: CreateProcess: "C:\Program Files\IBM\Rational\SDP\6.0\runtimes\base_v6\java\
jre\bin\java.exe" -Demma.coverage.out.file=C:\RAD901\build/temp/emma/coverage/coverage.emma -Demma.coverage.out.merge=true -classpat
h "C:\RAD901\build\libs\XmlWriter.jar;C:\RAD901\build\libs\cactus1-6\aspectjrt-1.1.1.jar;C:\RAD901\build\libs\cactus1-6\cactus-1.6.1
.jar;C:\RAD901\build\libs\cactus1-6\cactus-ant-1.6.1.modified.jar;C:\RAD901\build\libs\cactus1-6\commons-codec-1.3.jar;C:\RAD901\bui
ld\libs\cactus1-6\commons-httpclient-3.0.1.jar;C:\RAD901\build\libs\cactus1-6\commons-logging-1.0.3.jar;C:\RAD901\build\libs\cactus1
-6\httpunit-1.5.4.jar;C:\RAD901\build\libs\cactus1-6\nekohtml-0.7.4.jar;C:\RAD901\build\libs\catalina.jar;C:\RAD901\build\libs\com-d
arwinsys-util.jar;C:\RAD901\build\libs\commons-pool-1.4.jar;C:\RAD901\build\libs\db2jcc.jar;C:\RAD901\build\libs\db2jcc_license_cu.j
ar;C:\RAD901\build\libs\emma.jar;C:\RAD901\build\libs\hapi-0.5.1.jar;C:\RAD901\build\libs\jboss-common.jar;C:\RAD901\build\libs\jstl
-1.0.jar;C:\RAD901\buil
The result was incomplete. I don't know why, but I would like to know the cause of my exception. I hope somebody could help me.
Thank you so much in advance.

Hello all,
I'm having almost the same issue related to error message when I hit a button on my manufacturing software.
*"ScriptException: Error in exec: java.io.IOException: CreateProcess*
*exec(C:\\progra~1\\intern~1\\iexplore.exe http://cbweb4:81/barcode/CMbombyorder.asp\u003FR2=P&T2=12875424-P")*
This is when I hit a button that works for us to show this webpage I wrote previously. Last week we didnt have this issue, this just started this morning and I dont know what do to, it shows something about JAVA, that's why I'm asking to you guys, I dont know if you could please enlight me a little bit.
Thanks in advance.

Session tracking for File Upload Servlet

Hey Friends,
I am developing a File Upload servlet and I need your help in certain matters .I have taken the servlet code from java-edge.com and am modifying it to give custom behaviour.I have a main page for upload (form upload)(lets call it form 1).If the file to be uploaded already exists on the server then a page is generated by the server saying that file already exists.(form 2)Now it is here(in form 2) that I want to provide an extra button which when submitted would recall the same servlet /or maybe another one and would provide the user for overriding the existing file.
Now as per the code I would set the Override flag to be false in the second form and false in the main form .
Given the case that it is a form based uploading servlet how do I maintain the user session when going to the next form or how do i pass the variables of the first form into second form .
I am also facing another problem that is how do i manage multiple file uploads at a time .This basic system allows only one file per upload .
P.S If someone could also throw some light on how to use the com.oreilly servlet (the latest version) it would be lovely but for now I want to focus on developing the current one

Hi Jocelyn,
I want to apologize firstly for the delay in my response.
I was seriously bogged down due to certain circumstances and so couldnt reply.Thanks a million for your prompt reply.I'll post the Html content here and you will find the servlet code as is at the following U.R.L
http://www.java-edge.com/Viewcode.asp?Value=serv012
Form1:
<HTML>
<HEAD>
<TITLE> Upload </TITLE>
</HEAD>
<BODY >
<h2>Upload Your File!</h2>
<form ENCTYPE="multipart/form-data" action="http://localhost:8080/servlet/Upload" method=post>
click <b> browse </b>to select the file <br>
<b> File:</b>
<input type="FILE" name="Filename" value="" MAXLENGTH=255 size=50><br>
Click here to upload!<input type=submit value=Upload>
<input type=hidden name=Directory value="G:/Workspace/Upload/">
<input type=hidden name=SuccessPage value="G:/Workspace/successpage.html">
<input type=hidden name="OverWrite" value="false">
<input type=hidden name="OverWritePage" value="">
</form>
</BODY>
</HTML>
Form 2
<HTML>
<HEAD>
<TITLE> Upload </TITLE>
</HEAD>
<BODY >
<h2>Upload Your File!</h2>
<form ENCTYPE="multipart/form-data" action="http://localhost:8080/servlet/Upload" method=post>
click <b> browse </b>to select the file <br>
<b> File:</b>
<input type="FILE" name="Filename" value="" MAXLENGTH=255 size=50><br>
Click here to upload!<input type=submit value=Upload>
<input type=hidden name=Directory value="G:/Workspace/Upload/">
<input type=hidden name=SuccessPage value="G:/Workspace/successpage.html">
<input type=hidden name="OverWrite" value="true">
<input type=hidden name="OverWritePage" value="G:/Workspace/overwritepage.html">
</form>
</BODY>
</HTML>
Now in Form 2 I would add another button which when clicked would prompt the user if he wishes to overwrite the page.
I am also posting the servlet code although I am sure u would prefer reading the one on the site
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class Upload extends HttpServlet
static final int Max = 102400;// max. size of the file can be 100K
String path;// stores path
String msg;// store message of success
//init method is called when servlet is first loaded
public void init(ServletConfig config)throws ServletException
super.init(config);
if(path == null)
path = "G:/Workspace/Upload/";
if(msg == null)
msg = "File successfully uploaded. Check out!";
public void doPost(HttpServletRequest req, HttpServletResponse resp)throws ServletException, IOException
ServletOutputStream sos = null;
DataInputStream dis = null;
FileOutputStream fos = null;
try
resp.setContentType("text/plain");// return type of response is being set as plain
sos = resp.getOutputStream();// gets handle to the output stream
catch(IOException e)
System.out.println(e);
return;
try
String contentType = req.getContentType();// gets client's content type that should be multipart/form-data
if(contentType!=null && contentType.indexOf("multipart/form-data")!= -1)
     // gets handle to the input stream to get the file to be uploaded from client
     dis = new DataInputStream(req.getInputStream());
     // gets length of the content data
     int Length = req.getContentLength();
     if(Length>Max)// length of the content data is compared with max size set
     sos.println("sorry! file too large");
     sos.flush();
     return;
     //to store the contents of file in byte array
     byte arr[] = new byte[Length];
     int dataRead = 0;
     int totalData = 0;
     while(totalData <Length)
     dataRead = dis.read(arr,totalData,Length);
     totalData += dataRead;
     String data = new String(arr);//byte array converted to String
     arr = null;
     // gets boundary value
     int lastIndex = contentType.lastIndexOf("=");
     String boundary = contentType.substring(lastIndex+1,contentType.length());
     String dir = "";
     if(data.indexOf("name=Directory")>0)// the type ""Directory"" is searched in the web page
     dir = data.substring(data.indexOf("name=Directory"));
     //gets directory
     // the directory higher in the directory tree cannot be selected
     if(dir.indexOf("..")>0)
     sos.println("Error- the directory higher in the directory tree cannot be selected");
     return;
     String successPage="";
     if(data.indexOf("name=\"SuccessPage\"")>0)// the type ""SuccessPage"" is searched in the web page
     successPage =data.substring(data.indexOf("name=\"SuccessPage\""));
     // gets successpage
     String overWrite="";
     if(data.indexOf("name=\"OverWrite\"")>0)// the type ""Overwrite"" is searched in the web page
     overWrite =data.substring(data.indexOf("name=\"OverWrite\""));
     overWrite = overWrite.substring(overWrite.indexOf("\n")+1);
     overWrite = overWrite.substring(overWrite.indexOf("\n")+1);
     overWrite = overWrite.substring(0,overWrite.indexOf("\n")-1);//gets overwrite flag
     else
     //overWrite = "false";
     String overWritePage ="";
     if(data.indexOf("name=\"OverWritePage\"")>0)// the type ""OverwritePage"" is searched in the web page
     // ensures same file is not uploaded twice
     overWritePage =data.substring(data.indexOf("name=\"OverWritePage\""));
     overWritePage = overWritePage.substring(overWritePage.indexOf("\n")+1);
     overWritePage = overWritePage.substring(overWritePage.indexOf("\n")+1);
     overWritePage = overWritePage.substring(0,overWritePage.indexOf("\n")-1);// // gets overwritepage
     //gets upload file name
     String file =data.substring(data.indexOf("filename=\"")+10);
     file = file.substring(0,file.indexOf("\n"));
     file = file.substring(file.lastIndexOf("\\")+1,file.indexOf("\""));
     int position;//upload file's position
     position =data.indexOf("filename=\"");//find position of upload file section of request
     position =data.indexOf("\n",position)+1;//find position of content-disposition line
     position =data.indexOf("\n",position)+1;//find position of content-type line
     position =data.indexOf("\n",position)+1;//find position of blank line
     int location =data.indexOf(boundary,position)-4;//find position of next boundary marker
     data =data.substring(position,location);// uploaded file lies between position and location
     String fileName = new String(path + dir + file);// the complete path of uploadad file
     File check = new File(fileName);
/*************************CASE OVERRIDE ************************************/
     //String overwrite=req.getParameter("OverWrite");
     if(check.exists())// checks for existence of file
          if(overWrite.equals("false"))
                    if(overWritePage.equals(""))
                    sos.println("Sorry ,file already exists");
                    //return;
                    else
                    //overWritePage="G:/Workspace/overwritepage.html";
                    fos = new FileOutputStream(fileName);
                    fos.write(data.getBytes(),0,data.length());
                    //resp.sendRedirect(overWritePage);
                    sos.println("File Overridden");
          //return;
     File checkDir = new File(path + dir);
     if(!checkDir.exists())//checks for existence of directory
     checkDir.mkdirs();
fos = new FileOutputStream(fileName);
fos.write(data.getBytes(),0,data.length());
sos.println("File successfully uploaded");
if(check.exists())
          if(overWrite.equals("true"))
               fos = new FileOutputStream(fileName);
               fos.write(data.getBytes(),0,data.length());
               if(successPage.equals(""))
               sos.println(msg);
               sos.println("File successfully uploaded");// if success HTML page URL not received
               else
               successPage="G:/Workspace/successpage.html";
               resp.sendRedirect(successPage);
     else// incase request is not multipart
     sos.println("Not multipart");
}//END OF TRY BLOCK
catch(Exception e)
          try
          System.out.println(e);
          sos.println("unexpected error");
          catch(Exception f)
          System.out.println(f);
finally
          try
          fos.close();// file output stream closed
          catch(Exception f)
          System.out.println(f);
          try
          dis.close();// input stream to client closed
          catch(Exception f)
          System.out.println(f);
          try
          sos.close();// output stream to client closed
          catch(Exception f)
          System.out.println(f);
}//END OF DOPOST METHOD
} //END OF CLASS
Jocelyn the above code may have tid bit errors which u could understand.But I hope u get the overall idea of whats going on

Java.io.IOException in servlet-based file upload

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