Reading files from clients machine through a browser

if i have to access or use some files say C:\hello\myimage.jpg from client machine's local drive, how it can be done using some technology in Java eg applets or some other way. please read the following situation to have a better undertsanding of the problem,
consider the following situation:
a web application is running on client PC, and on click of a button, i have to generate a report in some format and insert some images in that report which are on clients local drive and their path is known to me say C:\ myimage.jpg.
if the mages were on the server(where web application is hosted), then its not a prob.
if there any other technology in java to read files from clients PC through a browser other than java

Sign the applet.
http://forum.java.sun.com/thread.jspa?forumID=63&threadID=524815
second and last post

Similar Messages

Reading Large data files from client machine ( urgent)

Hi,
I want to know the best way for reading large data at about 75MB file from client machine and insert to the database.
Can anybody provide sample code for it.
Loading the file should be done at client machine and inserting into the database should be done at server side.
How should i load the file?
How should i transfer this file or data to server ?
How should i insert into the database ?
Thanks in advance.
regards
Kalyan

Like I said before you should be using your application server to serve files >from the server off the filesystem. The database should not store files this big >and should instead just have a reference to this file. I think u have not understood the problem corectly.
I will make it clear.
The requirement is as follows.
This is a j2ee based application.
Application server is oracle application server.
Database is oracle9i
it is thick client (swing based application)
User enters datasource like c:\turkey.data
This turkey.data file contains data
1@1@20050131@1@4306286000113@D00@32000002005511069941@@P@10@0@1@0@0@0@DK@70059420@4330654016574@1@51881100@51881100@@99@D@40235@0@0@1@430441800000000@@11@D@42389@20050201@28483@15@@@[email protected]@@20050208@20050307@0@@@@@@@@@0@@0@0@0@430443400000800@0@0@@0@@@29@0@@@EUR
like wise we may have more than 3 lacs rows in it.
We need to read this file and transfer this to the application server. Which are EJBS.
There we read this file each row in file is one row in the database for a table.
Like wise we need to insert 3 lacs records in the database.
We can use Jdbc to insert the data which is not a problem.
Only problem is how to transfer this data to server.
I can do it in one way. This is only a example
I can read all the data in StringBuffer and pass to server.
There again i get the data from StringBuffer and insert into database using jdbc.
This way if u do it. It is performance issue and takes long time to insert into the database.It even may give MemoryOutofBond exception.
just iam looking for the better way of doing this which may get good performace issue.
Hope u have understood the problem.

How to find out a file from client machine

hi all,
I want to read a file from client machine, like a outlook express file in which all the address are saved, using servlet. Initially i do not know the file path for that file, How i can read that file.
plz help me
thanx in advace
Manish

You have 2 possibilities. First, you might be able to mount the client's disk drive at the server; the servlet can then access that drive directly. Second, install a client program on the client machine and communicate with that program, and have it do the search (or whatever).
Outside of Java, there are remote-access programs - like PCAnyWhere.

JSP to Upload file from client machine to Web Server!

Hi,
I want to upload a file from client machine to web server in order to send it as email attachment, How can I do it? After uploading the file the class should give me the path where the file is stored on the web server and the file name in return!
I know the HTML <file> field but dont know how to copy it on web server, HTML Part will be:
<FORM ENCTYPE="multipart/form-data"
method="POST" action="My.jsp">
<INPUT TYPE="file" NAME="mptest">
<INPUT TYPE="submit" VALUE="upload">
</FORM>
Please help!
Thanks,
- Rahul

You can use cos.jar provided by O'Reilly from http://www.servlets.com/cos/. Take a look at com.oreilly.servlet.multipart.* classes.
Package is provided with source, classes, documentation and, of course, ready-to-use jar file.
It is really usefull and - ready!

How to upload file from client machine to database in server machine?

I am developing a web application. this application is suppose to take file from client machine and store that to database in the server side.
My jsp form is of multi part type. but I am confused about what to write in servlet.
Can any one help me ?
Edited by: chinmaya_mishra on Feb 16, 2009 2:55 AM
Edited by: chinmaya_mishra on Feb 16, 2009 2:58 AM

http://www.google.com/search?q=jdbc+blob
Blob processing varies between databases; see also examples for whatever database you are using, e.g.
http://www.google.com/search?q=jdbc+blob+oracle
If you are storing text data instead of binary data, replace "blob" by "clob" in the searches.

How to delete file from client machine

Hi all,
we are using the DataBase: oracle:10g,
and forms/reports 10g(developer suite 10g-10.1.2.2).
can anybody help me how to delete the file from client machine in specified location using webutil or any
(i tried with webutil_host & client_host but it is working for application server only)
thank you.

hi
check this not tested.
PROCEDURE OPEN_FILE (V_ID_DOC IN VARCHAR2)
IS
-- Open a stored document --
LC$Cmd Varchar2(1280) ;
LC$Nom Varchar2(1000) ;
LC$Fic Varchar2(1280);
LC$Path Varchar2(1280);
LC$Sep Varchar2(1) ;
LN$But Pls_Integer ;
LB$Ok Boolean ;
-- Current Process ID --
ret WEBUTIL_HOST.PROCESS_ID ;
V_FICHERO VARCHAR2(500);
COMILLA VARCHAR2(4) := '''';
BOTON NUMBER;
MODO VARCHAR2(50);
URL VARCHAR2(500);
Begin
V_FICHERO := V_ID_DOC;
LC$Sep := '\';--WEBUTIL_FILE.Get_File_Separator ; -- 10g
LC$Nom := V_FICHERO;--Substr( V_FICHERO, instr( V_FICHERO, LC$Sep, -1 ) + 1, 100 ) ;
--LC$Path := CLIENT_WIN_API_ENVIRONMENT.Get_Temp_Directory ;
LC$Path := 'C:';
LC$Fic := LC$Path || LC$Sep || LC$Nom ;
If Not webutil_file_transfer.DB_To_Client
LC$Fic,
'TABLE_NAME',
'ITEM_NAME',
'WHERE'
) Then
Raise Form_trigger_Failure ;
End if ;
LC$Cmd := 'cmd /c start "" /MAX /WAIT "' || LC$Fic || '"' ;
Ret := WEBUTIL_HOST.blocking( LC$Cmd ) ;
LN$But := WEBUTIL_HOST.Get_return_Code( Ret ) ;
If LN$But 0 Then
Set_Alert_Property( 'ALER_STOP_1', TITLE, 'Host() command' ) ;
Set_Alert_Property( 'ALER_STOP_1', ALERT_MESSAGE_TEXT, 'Host() command error : ' || To_Char( LN$But ) ) ;
LN$But := Show_Alert( 'ALER_STOP_1' ) ;
LB$Ok := WEBUTIL_FILE.DELETE_FILE( LC$Fic ) ;
Raise Form_Trigger_Failure ;
End if ;
If Not webutil_file_transfer.Client_To_DB
LC$Fic,
'TABLE_NAME',
'ITEM_NAME',
'WHERE'
) Then
NULL;
Else
Commit ;
End if ;
LB$Ok := WEBUTIL_FILE.DELETE_FILE( LC$Fic ) ;
Exception
When Form_Trigger_Failure Then
Raise ;
End ;sarah

To upload a file from client machine to server machine

Hi everybody!
Could anyone plz help me. I am struck in a problem
I want to transfer a file from client's machine to server but I am not able to upload
It is tranferring the file only to the local machine
I am using orielley package It is transferring files only to my local machine but not to the server .Can anyone correct it. It's very urgent
how to write the relative path for server
I am using this path and it is not uploading
MultipartRequest multi = new MultipartRequest(request, "../<administrator>:<dev2daask>@dev2:C:/123data/", 5 * 1024 * 1024);
Here is my code:
<%@ page import="java.util.*" %>
<%@ page import="javax.servlet.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="java.io.*" %>
<%@ page import="com.oreilly.servlet.MultipartRequest"%>
<%
try {
// Blindly take it on faith this is a multipart/form-data request
// Construct a MultipartRequest to help read the information.
// Pass in the request, a directory to saves files to, and the
// maximum POST size we should attempt to handle.
// Here we (rudely) write to the server root and impose 5 Meg limit.
MultipartRequest multi = new MultipartRequest(request, "../<administrator>:<dev2daask>@dev2:C:/123data/", 5 * 1024 * 1024);
out.println("<HTML>");
out.println("<HEAD><TITLE>UploadTest</TITLE></HEAD>");
out.println("<BODY>");
out.println("<H1>UploadTest</H1>");
// Print the parameters we received
out.println("<H3>Params:</H3>");
out.println("<PRE>");
Enumeration params = multi.getParameterNames();
while (params.hasMoreElements()) {
String name = (String)params.nextElement();
String value = multi.getParameter(name);
out.println(name + " = " + value);
out.println("</PRE>");
// Show which files we received
out.println("<H3>Files:</H3>");
out.println("<PRE>");
Enumeration files = multi.getFileNames();
while (files.hasMoreElements()) {
String name = (String)files.nextElement();
String filename = multi.getFilesystemName(name);
String type = multi.getContentType(name);
File f = multi.getFile(name);
out.println("name: " + name);
out.println("filename: " + filename);
out.println("type: " + type);
if (f != null) {
out.println("length: " + f.length());
out.println();
out.println("</PRE>");
catch (Exception e) {
out.println("<PRE>");
out.println("</PRE>");
out.println("</BODY></HTML>");
%>

you have not understood my point
how does this code will run on servlet when I want to upload a file from client's
machine to server machine
what I am doing is I am giving an option to the user that he/she can browse the file and then select any file and finally it's action is post in the jsp form for which I have sent the code
All the computers are connected in LAN
So how to upload a file from client's machine to server's machine
Plz give me a solution

Copy file from client machine to unix db server

Dear all,
I have oracle form 10g, and data base server using 10 r 2,
I have an oracle for to browse client XML file and return the name of the file including the path to TEXT item what I want to do after that is to copy the seelcted file from the client to DB server (hint this server over Unix operating system)
I tried
V_Cpy_Result := Webutil_File.Copy_File ('C:\File_Name.Xml', '/u01/oradata/odsuat/ssr_xml_dir/Outbound/File_Name.Xml');
but this does't work, please provide me with the way or the command that I can copy the selected file from client to Unix DB server...

Hello,
If you want to transfer files between client machine and A.S. or database machine, use the Webutil file_transfer package's functions.
Francois

How to read file from remote machine

Hello,
Hi, i would like to know how to read text file from remote machine using java source code, any code ?
Thanks very much;
Best regards
Kim

On the server, perform the following steps:
Parse the request and determine the file to serve
Open a FileInputStream to the appropriate file
Obtain a reference to the Servlet OutputStream
Pipe the bytes from the file to the output stream
Flush and close the streamYou might want to call HttpServletResponse.setContentType("application/octet") to indicate to the browser that a file download will be occurring. Do so before getting the reference to the Servlet's OutputStream.
- Saish

How to FTP a file from client machine to database server using forms 10g

Hi
I want to ftp a file from a client machine to the database server machine using forms 10G (or PL/SQL).
could you please tell me how can I do this
Regards

hi
How to get up and running with WebUtil 1.06 included with Oracle Developer Suite 10.1.2.0.2 on a win32 platform
Solution
Assuming a fresh "Complete" install of Oracle Developer Suite 10.1.2.0.2,
here are steps to get a small test form running, using WebUtil 1.06.
Note: Oracle_Home is used as an alias for your real oDS ORACLE_HOME.
Feel free to copy this note to a text editor, and do a global find/replace on
Oracle_Home with your actual value (no trailing slash). Then it is easy to
copy/paste actual commands to be executed from the note copy.
1) Download http://prdownloads.sourceforge.net/jacob-project/jacob_18.zip
and extract to a temporary staging area. Do not attempt to use 1.7 or 1.9.
2) Copy or move jacob.jar and jacob.dll
C:\webutile is the folder where you extracted Jacob, and will end in ...\jacob_18
cd C:\webutile
copy jacob.jar Oracle_Home\forms\java\.
copy jacob.dll Oracle_Home\forms\webutil\.
The Jacob staging area is no longer needed, and may be deleted.
3) Sign frmwebutil.jar and jacob.jar
Open a DOS command prompt.
Add Oracle_Home\jdk\bin to the PATH:
set PATH=Oracle_Home\jdk\bin;%PATH%
Sign the files, and check the output for success:
Oracle_Home\forms\webutil\sign_webutil Oracle_Home\forms\java\frmwebutil.jar
Oracle_Home\forms\webutil\sign_webutil Oracle_Home\forms\java\jacob.jar
4) If you already have a schema in your RDBMS which contains the WebUtil stored code,
you may skip this step. Otherwise,
Create a schema to hold the WebUtil stored code, and privileges needed to
connect and create a stored package. Schema name "WEBUTIL" is recommended
for no reason other than consistency over the user base.
Open Oracle_Home\forms\create_webutil_db.sql in a text editor, and delete or comment
out the EXIT statement, to be able to see whether the objects were created witout
errors.
Start SQL*Plus as SYSTEM, and issue:
CREATE USER webutil IDENTIFIED BY [password]
DEFAULT TABLESPACE users
TEMPORARY TABLESPACE temp;
GRANT CONNECT, CREATE PROCEDURE, CREATE PUBLIC SYNONYM TO webutil;
CONNECT webutil/webutil@rcci
@Oracle_Home\forms\create_webutil_db.sql
-- Inspect SQL*Plus output for errors, and then
CREATE PUBLIC SYNONYM webutil_db FOR webutil.webutil_db;
Reconnect as SYSTEM, and issue:
grant execute on webutil_db to public;
5) Modify Oracle_Home\forms\server\default.env, and append Oracle_Home\jdk\jre\lib\rt.jar
to the CLASSPATH entry.
6) Modify Oracle_Home\forms\server\formsweb.cfg insde [default] add :
archive_jini=frmall_jinit.jar,frmwebutil.jar,jacob.jar
archive=frmall.jar
also add :
[webutil]
WebUtilLogging=off
WebUtilLoggingDetail=normal
WebUtilErrorMode=Alert
WebUtilDispatchMonitorInterval=5
WebUtilTrustInternal=true
WebUtilMaxTransferSize=16384
baseHTMLjinitiator=webutiljini.htm
baseHTMLjpi=webutiljpi.htm
baseHTML=webutilbase.htm
archive_jini=frmall_jinit.jar
WebUtilArchive=frmwebutil.jar,jacob.jar,f90all.jar
archive=frmwebutil.jar,f90all.jar
lookAndFeel=oracle
7) Modify Oracle_Home\forms\server\webutil.cfg and add :
transfer.database.enabled=TRUE
transfer.appsrv.enabled=TRUE
8) Start the OC4J instance
9) Start Forms Builder and connect to a schema in the RDBMS used in step (4).
Open webutil.pll, do a "Compile ALL" (shift-Control-K), and generate to PLX (Control-T).
It is important to generate the PLX, to avoid the FRM-40039 discussed in Note 303682.1
If the PLX is not generated, the Webutil.pll library would have to be attached with
full path information to all forms wishing to use WebUtil. This is NOT recommended.
10) Create a new FMB.
Open webutil.olb, and Subclass (not Copy) the Webutil object to the form.
There is no need to Subclass the WebutilConfig object.
Attach the Webutil.pll Library, and remove the path.
Add an ON-LOGON trigger with the code
NULL;
to avoid having to connect to an RDBMS (optional).
Create a new button on a new canvas, with the code
show_webutil_information (TRUE);
in a WHEN-BUTTON-PRESSED trigger.
Compile the FMB to FMX, after doing a Compile-All (Shift-Control-K).
11) Under Edit->Preferences->Runtime in Forms Builder, click on "Reset to Default" if
the "Application Server URL" is empty.
Then append "?config=webutil" at the end, so you end up with a URL of the form
http://server:port/forms/frmservlet?config=webutil
12) Run your form.

How to upload file from client machine to server machine?

i am developing one web application.I have one html file with browse option. client can browse any type of file. what ever file the client will browse it going to be stored in server machine. for storing the file want to use servlet. my html form is of multipart type.
can any one send me the servlet code? i am using tomcat 5.5 as web server.

[http://commons.apache.org/fileupload]
Start reading 'User Guide' and 'Frequently Asked Questions'.
Good luck :)

Reading Files from client directory folder using servlets or struts.

HI All,
Could you please help me out int the below query.
I want read all files from paricular directory folder from the client machine in web application. I am able to do it from my local machine. but when I am try to do it from some other machine I am not able to get the file list.
It is very urgent ..please hep me ASAP.

It should be problem with the file permissions in your client machine ???Hardly.
@OP: a servlet executes at the server. It doesn't haved any access whatsoever to the client machine.

Opening a file from client machine

Hi All ,
I have a requirement .I need to <b>integrate / Open </b> an .exe file in the portal and this exe file will reside on every on every client machine from which portal is accessed . Can you suggest me some methods . I have tried with URL iview , but it is not working .
Thanks
Aneez
<b>P.S Guaranteed points for helpful answers</b>

Hi Aneez,
In the registry the URL(s) that you add are for the source, not target. So you will have something like;
URL1=http://<portal>:<port>
of course this would allow any code run from your portal to open exe files without a warning; so you can add the URLs of individual iViews to your registry if you want a bit more control from a security point of view.
Where you launch the apps;
javascript:launchApp('c:\windows\notepad.exe c:\autoexec.bat')"
I think you can only launch one app at a time, here you pass one string containing the paths to two apps, pass one at a time to the launchApp function.
Also, try adding four '\' characters each time instead of two, one an escape character for the Java compiler and one an escape character for the JavaScript in the browser.
Temporarily add
alert(strCmdLine);
to your launchApp function to see the exact path that the function is trying to launch, make sure that this path contains one and only one '\' character at each point, eg "C:\Windows\notepad.exe". You can also put the
obj.LaunchApplication(.....
line in a try/catch block, put an alert in the catch and see if there's a problem with the JavaScript code trying to launch the app or if the problem is elsewhere.
As far as using XP goes...... I've used LaunchInIE at a few customer sites but I don't think that any were using XP so I can't say that I've seen this working under XP. Perhaps on the WhirlyWiryWeb website you can find some info about whether or not you can expect this to work under XP.
Perhaps, if there's another PC in or near your office that has access to your portal but doesn't have XP installed you can try it from there yourself and see if your code is working on that machine but not yours with XP installed.
I hope this helps,
Patrick.
Edit.
Of course if you're running this from some HTML file on your own harddisk and not from the portal for testing purposes then in your registry the URL that you need to add should be localhost, 127.0.0.1.
Message was edited by: Patrick O'Neill

How to put image file on client machine through JBOSS

I need to imlement the functionality like google map on website, where my server is JBOSS
server. We used the newest technology SVG(scalable vector graphics) which doesn't loose the
image quaility on increasing the size of the image.
we are doing backend processing of the image and throwing the png images on the client.
machine. I already written a program which can be used at the time of zooming and panning
of the image and can throw the image but that is all PC based. but when I am implementing
on the server it is giving error because code is not getting any output directory to save
the image on sever.
Please tell me if that can be happen through caching or how can I save image on
client machine without user authenication and can retrieve on the web page. so that my
server doesn't have extra load.

hi jagdish,
Check this thread. discussed uploading file step by step
Re: How to upload and search a document in KM
Regards,
Ganesh N

Reading files from a browser on clients PC

is there anyway to read files from clients PC through browser in java, apart from signed applets.....
plz help , its very urgent......

taking the browser to be IE, suppose the following situation:
a web application is running on client PC, and on click of a button, i have to generate a report in some format and insert some images in that report which are on clients local drive and their path is known to me say C:\ myimage.jpg.
if the mages were on the server(where web application is hosted), then its not a prob.[b]
so for doing such a thing what i have to do means, what setting i have to change of the browser .....what security setting of clients PC has to be changed...
and how to get jar signed.
plz tell me the procedure to do this....

Reading files from clients machine through a browser

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