Uploaded File Processing
Hello,
I have been searching all day for a reasonable solution to my problem and have found many answers but I am not sure which is the best way. Here is my problem:
I have a web app that allows a user to upload a csv, I do some validation on the file then write the file to disk. I process the file and when finished email the user a csv file.
What I would like is to have the user upload the file and be done until they receive their email. How would I start processing the file without the user waiting for the processing to finish.
Some files could take upwards of 40 minutes to process, so you can see why I don't want the user to wait for the results.
I have tossed around the idea of starting new threads, backgrounds processes I am just not sure what the best way to do it is.
I would appreciate thoughts from people who have done this themselves or have knowledge about the process.
Thanks
hfalaska wrote:
I think I understand what you are saying, one thread that will process multiple files one at a time. I was thinking having maybe two or three threads running so in case an uploaded file contains a large amount of data to process(which will take time to process) I would have other threads able to process other files. This would keep the wait time down on users receiving their data.Understand that this is a trade-off. Multiple threads can potentially be less efficient, and for most tasks, a single thread running the tasks in sequence has greater throughput.
You should also consider how CPU-intensive the process is in comparison the upload speed. If the server can keep up processing the files at the rate they are uploaded, then you're better off processing as the file is uploaded.
I am stumped about one other thing, I have created my thread pool with three workers, I have my queue and am adding a file to the queue. But what has me scratching my head is I need to pass some parameters to the processing class and I am not sure how to do that. Any ideas?Create a Request object containing all the relevant data. If you're using a single thread with a queue, submit the Request objects to the queue. If you're using a pool of threads, make your Request object Runnable, or instantiate your Runnable with the given Request object and then pass the Runnable to the executor.
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Problem: It is necessary to organise process of uploading files in KM repository with approval or a rejection.
I have created process with two callable objects.
1. File Input
2. Interactive Form/File Approval
Has grouped structure "File"
In Runtime, during object performance "Interactive Form/File Approval" there is an error:
com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: pdfSource of InteractiveForm UI element should be populated with pdf binary content in USE_PDF mode
It is one problem, the second problem consists in that how to organise a folder choice where the file will be loaded.Hi Pustovoytov Stanislav ,
Check whether if the context attribute pdfsource is of binary type or any other type. It sbould be of binary type.
And about the second one you can organize the folder structure in the KM administration.
Thanks
Satya -
Upload and Process large files
We have a SharePoint 2013 OnPrem installation and have a business application that provides an option to copy local files into UNC path and some processing logic applied before copying it into SharePoint library. The current implementation is
1. Users opens the application and clicks “Web Upload” link from left navigation. This will open a \Layouts custom page to select upload file and its properties
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Can someone suggest a different design approach that can manage the large file outside of SharePoint context? Something like
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According to your post, my understanding is that you want to upload and process files for SharePoint 2013 server.
The following suggestion for your reference:
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Thanks,
Dennis Guo
TechNet Community Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Dennis Guo
TechNet Community Support -
Sending uploaded file to the approver using GP Process
Hai all,
i my project i need to send the resource files for approver ...
in my application i have created three actions under one sequencial block ..i need to send the user uploaded files to the three approvers .....Hi Ravi,
You can send email with attachment to multiple approver's using webdynpro api. Please check below link -
http://wiki.sdn.sap.com/wiki/display/WDJava/Sendmailwithattachmentusingwebdynpro+API%27s
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Sen -
Delete an uploaded file (in custom table) from a report
Hi,
I have a report of uploaded files (the files are saved in my own table, not in APEX_APPLICATION_FILES) - I'd like to add a delete link to each file in my report so that the user can delete a particular file.
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Thanks.Melissa,
It is now working. You missed couple of things:
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4. the request which would fire the delete process was triggered by a wrong request
Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.opal-consulting.de/training
http://htmldb.oracle.com/pls/otn/f?p=31517:1
------------------------------------------------------------------- -
How to upload file from Application Server?
Dear Friends,
How to upload file from Application Server?
Plz. with example...
Regards,
Dharmeshhi,
check the code for upload from application server.
tables: kna1.
types: begin of s_file,
customer type kna1-kunnr,
country type kna1-land1,
name type kna1-name1,
region type kna1-regio,
end of s_file.
*--Internal tables
data: it_file type s_file occurs 0 with header line.
*-- Selection screen
selection-screen: begin of block b1 with frame title text-001.
parameter: p_file type rlgrap-filename default 'C:/customer.txt'
obligatory.
selection-screen: end of block b1.
*-- At selection screen
at selection-screen on value-request for p_file.
perform file_help using p_file.
*-- Process File
start-of-selection.
perform upload_file using p_file.
*-- write File data to o/p
end-of-selection.
perform write_data.
*& Form file_help
form file_help using p_p_file.
data: l_filepath type ibipparms-path.
call function 'F4_FILENAME'
EXPORTING
PROGRAM_NAME = SYST-CPROG
DYNPRO_NUMBER = SYST-DYNNR
FIELD_NAME = ' '
importing
file_name = l_filepath
p_p_file = l_filepath.
endform. " file_help
*& Form upload_file
form upload_file using p_p_file.
call function 'WS_UPLOAD'
exporting
filename = p_p_file
filetype = 'DAT'
IMPORTING
FILELENGTH =
tables
data_tab = it_file
exceptions
conversion_error = 1
file_open_error = 2
file_read_error = 3
invalid_type = 4
no_batch = 5
unknown_error = 6
invalid_table_width = 7
gui_refuse_filetransfer = 8
customer_error = 9
no_authority = 10
others = 11
if sy-subrc <> 0.
message i001.
endif.
endform. " upload_file
*& Form write_data
form write_data .
loop at it_file.
write:/ it_file-customer, it_file-country, it_file-name,
it_file-region.
endloop.
endform.
regards,
keerthi. -
Is there a way to silently upload files?
Ok, so I've taken the plunge. I've started working on an AIR
app using Flash CS3. I'm putting together a little app that will
keep my online store updated with all the product updates from our
wholesaler. This includes parsing a csv file, downloading product
images from the wholesaler, updating the database, and then
uploading the images to our server.
The problem is that AIR does not seem to have the
functionality to silently upload files! Sure, I can use the
file.reference object to fire off the browse method, which then
opens the OS file browser window BUT I would really like the whole
thing to be hands off. In the past, I've written these types of
apps using Visual Studio but I haven't touched VS in two years.
Has anyone run across a way to silently upload or ftp files
in AIR?Hey Oliver,
Thanks for your answer--the fact that it CAN be done has
gotten me a lot further on finding a solution. Here's what I have
so far. As it runs, I can see the progress and completion of the
upload but I'm still not getting it saved. I'm uploading it to a
ColdFusion processing page.
AS3 Code:
import flash.filesystem.*;
import flash.net.URLRequest;
//Silent File Upload (no browse window)
function imageUpload(imageName,uploadPage):void
trace('Starting Upload of ' + imageName + '\n');
var myFile:File =
File.applicationDirectory.resolvePath(imageName);
var request:URLRequest = new URLRequest(uploadPage);
request.method = URLRequestMethod.POST;
myFile.addEventListener(ProgressEvent.PROGRESS,progressHandler);
myFile.addEventListener(Event.COMPLETE,completeHandler);
myFile.upload(request,"theFile");
function progressHandler(event:ProgressEvent):void {
var file:FileReference = FileReference(event.target);
var pLoaded =
Math.ceil(event.bytesLoaded/event.bytesTotal*100);
trace(pLoaded + '% uploaded');
function completeHandler(event:Event):void
trace ('Upload complete.');
var uploadPage = "
http://www.aaronbday.com/upload_file.cfm";
imageUpload("angelic_cat.jpg",uploadPage);
Here's the CFM page:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="
http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8" />
<title>Upload File</title>
</head>
<body>
<cfif isDefined("form.theFile")>
<!---we only want images--->
<cffile
action="upload"
destination="#ExpandPath("test/")#"
filefield="theFile"
nameconflict="overwrite"
accept="image/jpg,image/jpeg,image/gif,image/pjpeg"
>
<cfoutput><img src="test/#cffile.serverFile#"
/></cfoutput>
<cfelse>
<form method="post" action="upload_file.cfm"
enctype="multipart/form-data">
<input type="file" name="theFile" />
<input type="submit" name="Submit" />
</form>
</cfif>
</body>
</html>
Any ideas? Thanks! -
Problem while uploading file from application server to internal tab in BG
Hi all,
When i see the file in application server.data is like this
#################00\);_(#####}#-#}###############################00\);_(#####}#-#}###############################00\);_(*#####}#-#}#########
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Because the csv which is uploaded has dropdowns and some formattings.
when download from tcode cg3y i am getting correct file
When try to use open(binary mode) and read dataset i getting data as it is (junk).
i need to process in background.
Any help.
Rhea.upload file to string format
begin of ty_tab,
string type char200,
end of ty_tab.
loop at ty_tab into string
use statement replace string into tab deliminated fromat(particular occurance in string)
now call class to break string at tab into fields
endloop.
DATA : BEGIN OF i_data OCCURS 0,
data(200) TYPE c, "To hold Upload file data
END OF i_data.
OPEN DATASET v_str FOR INPUT
IN TEXT MODE
ENCODING DEFAULT IGNORING CONVERSION ERRORS.
IF sy-subrc EQ 0.
DO.
*Read a line from input file
READ DATASET v_str INTO i_data-data.
IF sy-subrc NE 0.
EXIT.
ENDIF.
*Append record to an internal table
APPEND i_data.
CLEAR: i_data.
ENDDO.
*Close the file
CLOSE DATASET v_str.
*---Start of inserti
LOOP AT i_data.
REPLACE ALL OCCURRENCES OF '"' IN i_data WITH '#'.
SPLIT i_data AT cl_abap_char_utilities=>horizontal_tab
INTO i_doc-pvaudt
i_doc-pvpate
i_doc-vecatc
i_doc-vhvend
i_doc-vhidt8
i_doc-vhinvn
i_doc-vhhexp
i_doc-vhiref. -
FI Upload file (Approval Workflow)
Hi All,
Need some assistance:
Currently our company has a standard approval workflow built. So when we receive an invoice without a PO, we manually post the invoice to a GL & Cost Centre. Once the invoice is coded, It’s then sent to the GL owners to approve using the workflow currently in place. All this works perfectly fine.
My issue is FI Upload files……. As Upload files contain several GL accounts – we are currently attaching a manual email approval from the approver to the file upload so the Accounts Payable department could post without any further approvals in Workflow as an email approval is sufficient.
We would like to build the same workflow approval cycle that we have already in place for Fi Invoices.
Note – an upload file come in with 10 different GL accounts ( ideally we don’t want to send it to 10 different approvers) as this will slow down the process, so I was wondering if there is a better solution that you could share to eliminate the upload going to 10 approvers.
Any Suggestions are greatly appreciated.
Thanks
AlexHi All,
Need some assistance:
Currently our company has a standard approval workflow built. So when we receive an invoice without a PO, we manually post the invoice to a GL & Cost Centre. Once the invoice is coded, It’s then sent to the GL owners to approve using the workflow currently in place. All this works perfectly fine.
My issue is FI Upload files……. As Upload files contain several GL accounts – we are currently attaching a manual email approval from the approver to the file upload so the Accounts Payable department could post without any further approvals in Workflow as an email approval is sufficient.
We would like to build the same workflow approval cycle that we have already in place for Fi Invoices.
Note – an upload file come in with 10 different GL accounts ( ideally we don’t want to send it to 10 different approvers) as this will slow down the process, so I was wondering if there is a better solution that you could share to eliminate the upload going to 10 approvers.
Any Suggestions are greatly appreciated.
Thanks
Alex -
Using ABAP Webdynpr How to Upload File and download file in SAP R/3
Hi SAP GURUS ,
I wanted to save employee profile from ESS to SAP so i am creating ESS Application .
For that I go with BDS Approach and create test program for this I got success while uploading file in my folder
which i have created with the help of class and content repository . but when i Using ABAP Webdynpro , i got error FM "BDS_BUSINESSDOCUMENT_CREATEF" message " error_kpro " .
Also I wanted to use KM for storage of Documents and wanted to retrive with help of ABAP Webdynpro .
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Thanks in Advance ,
Vishwassap at gmailHi Vishwas,
Check out the thread [Efficient way of saving documents uploaded|Re: Efficient way of saving documents uploaded by users; and check the blog by Raja Thangamani.
Also check the thread [Export Images through Function Modules |Export Images through Function Modules;.
Hope it helps you. -
Error in Upload file-table or view does not exist-wwv_flow_file_objects$
Hi,
i am trying to upload a file and then store the contents of the file into one of my tables in the schema.I wrote one package for uploading the file and then a process to insert each record in the uploaded file to the table in my schema.When i try compiling the package it gives an error.
PL/SQL: ORA-00942: table or view does not exist
The name of the table is wwv_flow_file_objects$
The package is as follows-
CREATE OR REPLACE PACKAGE BODY Text_File_Pkg AS
FUNCTION get_file_lines (
p_file_name IN VARCHAR2,
p_lines IN OUT line_tab_type,
p_rec_sep IN VARCHAR2 DEFAULT dos_new_line
) RETURN INTEGER
IS
v_binary_file BLOB;
v_text_file CLOB;
v_dest_offset INTEGER := 1;
v_src_offset INTEGER := 1;
v_lang_context INTEGER := DBMS_LOB.default_lang_ctx;
v_warning INTEGER;
v_rec_sep_len CONSTANT INTEGER := LENGTH(p_rec_sep);
v_start_pos INTEGER := 1;
v_end_pos INTEGER := 1;
v_line_num INTEGER := 1;
v_file_length INTEGER;
BEGIN
IF p_file_name IS NULL
THEN
RETURN 1;
END IF;
IF p_rec_sep IS NULL
THEN
RETURN 2;
END IF;
SELECT blob_content
INTO v_binary_file
FROM wwv_flow_file_objects$
WHERE NAME = p_file_name
AND (mime_type = 'text/plain' OR mime_type = 'application/octet-stream')
AND doc_size > 0;
DBMS_LOB.createtemporary(v_text_file, TRUE);
DBMS_LOB.converttoclob(v_text_file, v_binary_file,
DBMS_LOB.lobmaxsize, v_dest_offset,
v_src_offset, DBMS_LOB.default_csid,
v_lang_context, v_warning);
IF v_warning = DBMS_LOB.warn_inconvertible_char
THEN
-- Unable to convert file.
RETURN 3;
END IF;
v_file_length := DBMS_LOB.getlength(v_text_file);
LOOP
EXIT WHEN v_start_pos > v_file_length;
v_end_pos := DBMS_LOB.INSTR(v_text_file, p_rec_sep, v_start_pos);
IF v_end_pos = 0
THEN
v_end_pos := v_file_length + 1;
END IF;
IF (v_end_pos - v_start_pos) > 4000
THEN
-- Line exceeds 4000 characters.
RETURN 4;
END IF;
p_lines(v_line_num) := DBMS_LOB.SUBSTR(v_text_file, v_end_pos - v_start_pos, v_start_pos);
v_line_num := v_line_num + 1;
v_start_pos := v_end_pos + v_rec_sep_len;
END LOOP;
RETURN 0;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
RETURN 5;
END get_file_lines;
END Text_File_Pkg;
Any suggestions.
Many Thanks,
SanjaiHi,
i am trying to upload a file and then store the contents of the file into one of my tables in the schema.I wrote one package for uploading the file and then a process to insert each record in the uploaded file to the table in my schema.When i try compiling the package it gives an error.
PL/SQL: ORA-00942: table or view does not exist
The name of the table is wwv_flow_file_objects$
The package is as follows-
CREATE OR REPLACE PACKAGE BODY Text_File_Pkg AS
FUNCTION get_file_lines (
p_file_name IN VARCHAR2,
p_lines IN OUT line_tab_type,
p_rec_sep IN VARCHAR2 DEFAULT dos_new_line
) RETURN INTEGER
IS
v_binary_file BLOB;
v_text_file CLOB;
v_dest_offset INTEGER := 1;
v_src_offset INTEGER := 1;
v_lang_context INTEGER := DBMS_LOB.default_lang_ctx;
v_warning INTEGER;
v_rec_sep_len CONSTANT INTEGER := LENGTH(p_rec_sep);
v_start_pos INTEGER := 1;
v_end_pos INTEGER := 1;
v_line_num INTEGER := 1;
v_file_length INTEGER;
BEGIN
IF p_file_name IS NULL
THEN
RETURN 1;
END IF;
IF p_rec_sep IS NULL
THEN
RETURN 2;
END IF;
SELECT blob_content
INTO v_binary_file
FROM wwv_flow_file_objects$
WHERE NAME = p_file_name
AND (mime_type = 'text/plain' OR mime_type = 'application/octet-stream')
AND doc_size > 0;
DBMS_LOB.createtemporary(v_text_file, TRUE);
DBMS_LOB.converttoclob(v_text_file, v_binary_file,
DBMS_LOB.lobmaxsize, v_dest_offset,
v_src_offset, DBMS_LOB.default_csid,
v_lang_context, v_warning);
IF v_warning = DBMS_LOB.warn_inconvertible_char
THEN
-- Unable to convert file.
RETURN 3;
END IF;
v_file_length := DBMS_LOB.getlength(v_text_file);
LOOP
EXIT WHEN v_start_pos > v_file_length;
v_end_pos := DBMS_LOB.INSTR(v_text_file, p_rec_sep, v_start_pos);
IF v_end_pos = 0
THEN
v_end_pos := v_file_length + 1;
END IF;
IF (v_end_pos - v_start_pos) > 4000
THEN
-- Line exceeds 4000 characters.
RETURN 4;
END IF;
p_lines(v_line_num) := DBMS_LOB.SUBSTR(v_text_file, v_end_pos - v_start_pos, v_start_pos);
v_line_num := v_line_num + 1;
v_start_pos := v_end_pos + v_rec_sep_len;
END LOOP;
RETURN 0;
EXCEPTION
WHEN NO_DATA_FOUND
THEN
RETURN 5;
END get_file_lines;
END Text_File_Pkg;
Any suggestions.
Many Thanks,
Sanjai -
Itunes Producer Problems Uploading - File not saving - file does not Exist.
Can someone please help me out, this problem is killing me. I've uploaded over 200 UPC Albums using Old G3 and Elderly ITunes Producer, but apple asked me to upgrade, so new machine to me Macmini maverics 10.9.? ITunes Producer 3.1.
So I click open ITunes producer 3.1. Click on make project from Audio
Files. Name and Save the project in Music-ITunes Producer-Playlists.
Plug in my external Flash drive and import the 40 Audio files for the
project. I am using an external flash drive as I can’t get ITunes Producer to
see my internal hard disk, I do not know if this is normal??
Go through the process of saving the project to Music – ITunes Producer –
Playlists – in this case 5060101121313
I then go through name all Tracks and make sure that all Data is correct.
Then when I finally go to either save the document or send it to you I get the
first Screen shot saying
"The Document "5060101121313" COULD NOT BE SAVED. The File does not exist".
As I say I have delivered 200 UPC’s to you with the old software and never
had any problems, I am in urgent need of making significant delivery to you so
would appreciate you help ASAP.
PaulI have been victorious. Now I am going to post my solution for all those that may have the same problem in the future. I'll even throw in a few key words so it will be more easily found by the search engine.
Connection conn = null;
try{
//connect to database
DAOManager dao = new DAOManager();
conn = dao.connectToDB();
String query = "update ASSIGNMENT set file_object = ?, filename = ?, filetype = ? where a_key = 1"; //sql query
PreparedStatement pstmt = conn.prepareStatement(query);
ByteArrayOutputStream baostream = new ByteArrayOutputStream();
//write to output stream
byte[] buffer = new byte[1024];
int len = -1;
while ((len = instream.read(buffer)) >= 0 )
baostream.write(buffer, 0, len);
baostream.flush();
byte[] filebytes = baostream.toByteArray();
baostream.close();
pstmt.setBytes(1,filebytes); //set blob
pstmt.setString(2,filename);
pstmt.setString(3,filetype);
pstmt.executeUpdate();
pstmt.close();
catch (SQLException e) {
System.out.println(Tools.getLoggingDate() + " upload() Error uploading file -- " + e);
e.printStackTrace();
catch (Exception e) {
System.out.println(Tools.getLoggingDate() + " upload() Error: " + e);
finally {
try{
conn.close();
}catch (SQLException e) {}
}Keywords: setBinaryStream(), setBytes(), MySQL, upload file, InputStream, Blob -
How to SCAN uploaded files for VIRUS in APEX
part 1:
Goal:
Do a virus scan of the uploaded file from APEX application prior to storing the file in custom tables.
The process:
Followed the document from www.developer.com:
Implementing an Anti-Virus File Scan in JEE Applications
By Vlad Kofman
Go to page: 1 2 3 Next
This article will discuss one of the ways to implement antivirus file scanning in Java, particular in the JEE applications. Viruses, Trojan Horses, and different malware and spyware are a real problem for current computer environments, and especially for the Windows operating system. If you are designing any application in Java that has a requirement to be able to upload external files, you have a potential security risk. By uploading, I mean any way to get the external file inside of the corporate firewall be it via HTTP protocol or any other means. It is quite common to have this type of requirement in an enterprise application and with Java being one of the most popular web development platforms, it is unfortunate that this type of gaping security risk is quite often overlooked.
Java's Development Kit (JDK) does not have any means to do the antivirus scan right out of the box. This is primarily because Java is a programming language, and does not have any virus scanning packages. Furthermore, anti-virus software is not Sun's area of expertise or business model. Developing this type of software (or Java package), and more importantly maintaining it, would be a huge task for Sun. Mainly because viruses are constantly evolving and keeping virus definitions up-to-date is a daunting task. Large companies such as McAffee, Symantec, or Zone Labs develop virus detecting and combating products and spend a lot of resources to maintain them.
Application Environment
To implement a virus file scan in Java, a third-party package needs to be used. For the purposes of this article, I will use Symantec Scan Engine (SSE) package, which comes with Java APIs. This package is an application that serves as a TCP/IP server and has a programming interface and enables Java applications to incorporate support for content scanning technologies. For this article, I used Symantec Scan Engine 5.1, which is available as a Unix or Windows install.
If you are using an anti-virus package from the different vendor, you will need to investigate what kind of APIs are available; however, the general approach should be similar. Also, note that my implementation can be used with JEE technology and any modern MVC framework such as Struts or Spring.
The architecture is as follows: A server machine needs to have SSE running at all times. This can be the same machine that hosts your Application Server, but in an enterprise environment this should be a different machine. The Default Port needs to be open through the firewall to allow communication with the scan engine. All JEE applications that need to do file scanning can talk to the SSE server machine through a default port. Also, multiple applications running on different application servers can re-use the same scanning server. For more information, you should refer to the Symantec Scan Engine (SSE) Installation Guide, available on the Symantec web site.
When an external file that needs to be scanned is sent to the SSE via its programming interface (Java APIs using the default port), before any other operation on the file is performed, the SSE returns a result code. For instance, a file is uploaded by an external user into the web email type application as an attachment; then, the SSE API is invoked by the application and the return code of pass or fail determines the outcome of the upload and whether that email can actually be sent. If you have an account on Yahoo mail, you probably have seen that Yahoo is using Norton Antivirus to scan all attachments, although no Java.
Click here for a larger image.
Figure 1: Screen shot from Yahoo
For details on the Scan Engine Server Installationm please see the Symantec Scan Engine (SSE) Implementation Guide from Symantec.
Here are some key things to remember about SSE:
• Java 2 SE Runtime (JRE) 5.0 Update 6.0 or later must be installed on the server before the SSE installation is done.
• After installation, verify that the Symantec Scan Engine daemon is running. At the Unix command prompt (if it's a Unix install), type the following command:
ps –ea | grep sym.
A list of processes similar to the following should appear:
o 5358 ? 0:00 symscan
o 5359 ? 0:00 symscan
If nothing is displayed the SSE process did not start.
If the SSE process did not start, type the following command to restart SSE:
/etc/init.d/symscan restart
• Keeping the virus definition up to date is the most important task and if new updates are not installed, the whole scan becomes ineffective. Symantec automatically downloads the most current file definitions through LiveUpdate. Please make sure that firewall rules are in place to allow the host server to connect to the Symantec update service.
Project Setup
For the purposes of this article, I included a wrapper for the Symantec SSE APIs, av.jar, which has Symantec Java APIs and serves as a client to the SSE server and takes care of all communications with the server. Please refer to the download source section. The av.jar should be included in the Java CLASSPATH to work with the SSE. This jar contains a class called AVClient that takes care of actually sending the files to SSE as byte arrays and returning the result.
In my project setting, I added three variables to be accessed via the System.getProperty mechanism. For example:
AV_SERVER_HOST=192.168.1.150
AV_SERVER_PORT=1344
AV_SERVER_MODE=SCAN
The AV_SERVER_HOST is the host name or IP of the machine where Scan Engine is installed.
The AV_SERVER_PORT is the port where Scan Engine listens for incoming files.
The AV_SERVER_MODE is the scan mode which can be:
• NOSCAN: No scanning will be done (any keyword that does not start with "SCAN" will result in ignoring the call to the Scan Engine and no files will be transferred for scanning).
• SCAN: Files or the byte stream will be scanned, but the scan engine will not try to repair infections.
• SCANREPAIR: Files will be scanned, the scan engine will try to repair infections, but nothing else will be done.
• SCANREPAIRDELETE: Files will be scanned, the scan engine will try to repair infections, and irreparable files will be deleted.
Note: For the file stream (byte array) scanning, the only meaning full values are "SCAN" and "NOSCAN".
Using the SSE Scanning Java APIs
In any class where scan is required, call the scanning API provided in the AVClient object located in the av.jar. The AVClient object will establish connection to the Scan Engine server and has the following APIs:
Figure 2: The significant APIs for the communication with to the Scan Engine Server.
If scanning a file on the file system, in SCAN only mode, use the call that accepts filename only.
If scanning a file on the file system, with SCANREPAIR or SCANREPAIRDELETE, use the call that accepts input and output file names.
If scanning an in-memory file (byte array), use the call accepting byte array.
For example:
import com.av.*;
Initialize setup parameters:
static String avMode =
(System.getProperty("AV_SERVER_MODE") != null)
? (String) System.getProperty("AV_SERVER_MODE") : "NOSCAN";
static boolean scan = avMode.startsWith("SCAN");
static String avServer =
(String) System.getProperty("AV_SERVER_HOST");
static int avPort =
Integer.parseInt( (String) System.getProperty("AV_SERVER_PORT"));
Scan check example for an in-memory file byte array:
public void scanFile(byte[] fileBytes, String fileName)
throws IOException, Exception {
if (scan) {
AVClient avc = new AVClient(avServer, avPort, avMode);
if (avc.scanfile(fileName, fileBytes) == -1) {
throw new VirusException("WARNING: A virus was detected in
your attachment: " + fileName + "<br>Please scan
your system with the latest antivirus software with
updated virus definitions and try again.");
Note that if you are using this code inside of the MVC handler, you can throw a custom VirusException and check for it in the calling method and perform any necessary cleanup. I have included the class in the AV Jar as well.
For example:
catch (Exception ex) {
logger.error(ex);
if (ex instanceof VirusException) {
// do something here
else {
// there was some other error – handle it
For more details on the Scan Engine Client API, please see Symantec Scan Engine Software Developers Guide.
Continuation in part2part 4:
c) Clienttester.java – This is the gui app set to test if the configuration is working or not. This gui uses the method scanfile(inputfile, outputfile) as you can see the result in the outputpane of the jframe.
* clienttester.java
* Created on April 12, 2005, 2:37 PM
* @author george_maculley
package com.av;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class clienttester
implements ActionListener {
// private String ipaddress = "127.0.0.1";
private String ipaddress = "199.209.150.58";
//private String ipaddress = "192.168.0.55";
static JFrame frame;
JFileChooser chooser = new JFileChooser();
TextField pathtofile = new TextField(System.getProperty("user.home"), 30);
// TextField pathtooutfile= new TextField(System.getProperty("user.home"),30);
private int port = 1344;
JButton filechooser = new JButton("Browse to file"); ;
private String originalfilename;
private String outputfilename;
JButton scanbutton = new JButton("Scan");
TextArea outputarea = new TextArea(20, 40);
TextField iptext = new TextField("127.0.0.1", 16);
TextField porttext = new TextField("1344", 5);
AVClient mine;
JRadioButton choosescan = new JRadioButton("SCAN");
// JRadioButton choosedelete= new JRadioButton("SCANREPAIRDELETE");
/** Creates a new instance of gui */
public clienttester() {
public clienttester(java.lang.String ip, java.lang.String infile, java.lang.String outfile, int port) {
this.ipaddress = ip;
this.port = port;
this.originalfilename = infile;
this.outputfilename = outfile;
boolean setValues(java.lang.String ip, java.lang.String infile, java.lang.String outfile, int port) {
this.ipaddress = ip;
this.port = port;
this.originalfilename = infile;
this.outputfilename = outfile;
return (true);
public void actionPerformed(java.awt.event.ActionEvent actionEvent) {
JComponent c = (JComponent) actionEvent.getSource();
if (c == filechooser) {
int retval = chooser.showDialog(frame, null);
if (retval == JFileChooser.APPROVE_OPTION) {
File theFile = chooser.getSelectedFile();
if (theFile != null) {
pathtofile.setText(theFile.getPath());
// pathtooutfile.setText(theFile.getPath());
JOptionPane.showMessageDialog(frame, "You chose this file: " + theFile.getPath());
if (c == scanbutton) {
//return object that can be passed to AVClient
String policy;
int thisport;
int scanresult;
String thisip;
String inputfile;
String outputfile;
outputarea.append("Server: " + iptext.getText() + "\r\n");
if (choosescan.isSelected()) {
policy = "SCAN";
else {
policy = "SCANREPAIRDELETE";
thisport = new Integer(porttext.getText()).intValue();
thisip = iptext.getText();
//mine= new AVClient(iptext.getText(),porttext.getText(),policy);
mine = new AVClient(iptext.getText(), thisport, policy);
if (mine.test() == 1) {
outputarea.append("Sorry. Incorrect parameters specified.\r\n");
System.exit(1);
else {
outputarea.append("Connection to SAVSE initialized.\r\n");
inputfile = pathtofile.getText();
// outputfile=pathtooutfile.getText();
outputfile = "/tmp";
outputarea.append("Scanning file " + inputfile + " \r\n");
if (policy == "SCAN") {
scanresult = mine.scanfile(inputfile);
else {
scanresult = mine.scanfile(inputfile, outputfile);
if (scanresult == 0) {
outputarea.append("File is clean.\r\n");
else if (scanresult == -1) {
outputarea.append("File is infected. \r\n");
else {
outputarea.append("Scan error.\r\n");
void display() {
Frame f = new Frame("SAVSE JAVA ICAP Client");
f.setLayout(new GridLayout(1, 2));
JPanel lpanel = new JPanel(new GridLayout(7, 1));
JPanel ippanel = new JPanel();
JPanel portpanel = new JPanel();
JPanel rpanel = new JPanel();
JPanel outputpanel = new JPanel();
JPanel buttonpanel = new JPanel();
JPanel pathpanel = new JPanel();
// JPanel outpathpanel= new JPanel();
JPanel policypanel = new JPanel();
ButtonGroup policygroup = new ButtonGroup();
filechooser.addActionListener(this);
scanbutton.addActionListener(this);
choosescan.setSelected(true);
policygroup.add(choosescan);
// policygroup.add(choosedelete);
buttonpanel.setBorder(BorderFactory.createTitledBorder("Scan Policy"));
buttonpanel.add(choosescan);
// buttonpanel.add(choosedelete);
pathpanel.setBorder(BorderFactory.createTitledBorder("Path to File"));
pathpanel.add(pathtofile);
f.setSize(new Dimension(650, 400));
f.setBackground(Color.white);
f.setResizable(true);
ippanel.setBorder(BorderFactory.createTitledBorder("SAVSE IP Address"));
ippanel.add(iptext);
outputpanel.setBorder(BorderFactory.createTitledBorder("OUTPUT"));
outputpanel.add(outputarea);
portpanel.setBorder(BorderFactory.createTitledBorder("ICAP Port"));
portpanel.add(porttext);
// outpathpanel.setBorder(BorderFactory.createTitledBorder("Path to Repair File"));
// outpathpanel.add(pathtooutfile);
lpanel.add(ippanel);
rpanel.add(outputpanel);
lpanel.add(portpanel);
lpanel.add(buttonpanel);
lpanel.add(pathpanel);
// lpanel.add(outpathpanel);
lpanel.add(filechooser);
lpanel.add(scanbutton);
f.add(lpanel);
f.add(rpanel);
f.setVisible(true);
public static void main(String[] args) {
clienttester g = new clienttester();
g.display();
d) my2.java – This is the class file I wrote to test that I am able to send a file and scan it and see the output in the JDEVELOPER. In this case the file is stored on the filesystem of the client machine. JDEVELOPER should be able to see the file.
NOTE:
“EICAR.com” is the test file downloaded from Symantec site to test a non malicious virus file. I n order to be able to test it like this, the Antivirus program running on your machine should be disabled, or else Antivirus will kick in and delete the file. In the first place you will not be able to download the test virus file either with anti virus running on the machine you are downloading to.
package com.av;
import java.io.*;
public class my2 {
static int my_return = 0;
* @param fileBytes
* @param fileName
* @return
public static int scanfile(String fileName){
String avMode = "SCAN";
boolean scan = avMode.startsWith("SCAN");
String avServer = "xx";--avserver ip address
int avPort = 1344;
int the_return = 0;
if (scan) {
AVClient avc = new AVClient(avServer,avPort,avMode);
the_return = avc.scanfile(fileName);
if (the_return == -1) {
return (the_return);
} else
return (the_return);
//my_return = the_return;
return (the_return);
public static void main(String[] args) throws Exception {
System.out.println("Hi there in Main");
byte[] b1 = new byte[4];
b1[1] = 68;
my_return = scanfile("c:\\eicar.com");
System.out.println(my_return);
e) Then finally we have my1.JAVA, which takes the filename, and it’s contents in the bytes form and scans the file. The reason for this method is we are not storing the file on the filesystem, it is read into the memory and only if it is clean, it is put into the database or else notify the user.
package com.av;
import java.io.*;
public class my1 {
static int my_return = 0;
static int a_length = 0;
* @param fileBytes
* @param fileName
* @return
public static int scanfile(String fileName,byte[] fileBytes) throws IOException {
String avMode = "SCAN";
boolean scan = avMode.startsWith("SCAN");
String avServer = "xxx";--avserver’s ip address
int avPort = 1344;
int the_return = 0;
if (scan) {
AVClient avc = new AVClient(avServer,avPort,avMode);
// File file = new File(fileName) ;
//byte[] fBytes = getBytesFromFile(file);
the_return = avc.scanfile(fileName, fileBytes);
if (the_return == -1) {
return (the_return);
} else
{return (the_return);}
my_return = the_return;
return (the_return);
// Returns the contents of the file in a byte array.
* @param file
* @return
* @throws IOException
public static byte[] getBytesFromFile(File file) throws IOException {
InputStream is = new FileInputStream(file);
// Get the size of the file
long length = file.length();
// You cannot create an array using a long type.
// It needs to be an int type.
// Before converting to an int type, check
// to ensure that file is not larger than Integer.MAX_VALUE.
if (length > Integer.MAX_VALUE) {
// File is too large
// Create the byte array to hold the data
byte[] bytes = new byte[(int)length];
// Read in the bytes
int offset = 0;
int numRead = 0;
while (offset < bytes.length
&& (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) {
offset += numRead;
// Ensure all the bytes have been read in
if (offset < bytes.length) {
throw new IOException("Could not completely read file "+file.getName());
// Close the input stream and return bytes
is.close();
return bytes;
// public static void main(String[] args) throws Exception {
//System.out.println("Hi there in Main");
// File file = new File() ;
// byte[] b1 = getBytesFromFile(file);
//System.out.println(b1);
// my_return = scanfile(,b1);
//System.out.println(my_return); }
Finally , you have the exceptions file,
e) package com.av;
public class VirusException
extends Exception {
public VirusException() {
super();
public VirusException(String text) {
super(text);
Once you have all these classes, you can use JDEVELOPER , to load these classes into the database: This is as follows:
Right click on the project, which has all these classes.
NEW -> deployment profiles -> load java and stored procedures.
When you are created deployment profile, you have to specify,
Loadjava options.
-f, -v (check the check boxes)
Under privileges:
-s – specify database schema these classes are loaded into
-s – create sysnonym check box
-g – grant to public or any specific users per your policy.
Under Resolver,
-r and –o (check the check boxes)
I accepted the default name storedproc1. Then you right click on the storedproc1.deploy, deploy to whichever database connection you created.
And then, In order to access this java class we need a pl/sql wrapper as follows:
create or replace package my1 is
function mycheck (pfilename in varchar2, psize in number)
return number;
end my1;
create or replace package body my1 is
function mycheck (pfilename in varchar2, psize in number)
return number is
language java
name 'com.av.my1.scanfile(java.lang.String, byte[]) return int';
end my1;
And the code is invoked from sql plus as follows:
Select my1.mycheck(“filename”, “filebytes”) from dual;
One important catch in the above method is to send the filename and filecontents in bytes form. In order to send the file contents as filebytes, you will need another java class and load into the data base as described above.
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
* This program demonstrates how to read a file into a byte array. This method
* reads the entire contents of the file into a byte array.
* @version 1.0
* @author Jeffrey M. Hunter ([email protected])
* @author http://www.idevelopment.info
public class ReadFileIntoByteArray {
* method to convert a byte to a hex string.
* @param data the byte to convert
* @return String the converted byte
public static String byteToHex(byte data) {
StringBuffer buf = new StringBuffer();
buf.append(toHexChar((data >>> 4) & 0x0F));
buf.append(toHexChar(data & 0x0F));
return buf.toString();
* Convenience method to convert an int to a hex char.
* @param i the int to convert
* @return char the converted char
public static char toHexChar(int i) {
if ((0 <= i) && (i <= 9)) {
return (char) ('0' + i);
} else {
return (char) ('a' + (i - 10));
* Returns the contents of the file in a byte array
* @param file File this method should read
* @return byte[] Returns a byte[] array of the contents of the file
private static byte[] getBytesFromFile(File file) throws IOException {
InputStream is = new FileInputStream(file);
System.out.println("\nDEBUG: FileInputStream is " + file);
// Get the size of the file
long length = file.length();
System.out.println("DEBUG: Length of " + file + " is " + length + "\n");
* You cannot create an array using a long type. It needs to be an int
* type. Before converting to an int type, check to ensure that file is
* not loarger than Integer.MAX_VALUE;
if (length > Integer.MAX_VALUE) {
System.out.println("File is too large to process");
return null;
// Create the byte array to hold the data
byte[] bytes = new byte[(int)length];
// Read in the bytes
int offset = 0;
int numRead = 0;
while ( (offset < bytes.length)
( (numRead=is.read(bytes, offset, bytes.length-offset)) >= 0) ) {
offset += numRead;
// Ensure all the bytes have been read in
if (offset < bytes.length) {
throw new IOException("Could not completely read file " + file.getName());
is.close();
return bytes;
* @param filename
public static byte[] chk_file(String filename) {
byte[] fileArray = null;
try {
fileArray = getBytesFromFile(new File( filename));
} catch (IOException e) {
e.printStackTrace();
if (fileArray != null) {
for (int i=0; i<fileArray.length; i++) {
System.out.println(
"fileArray[" + i + "] = " +
((int)fileArray[i] < 9 ? " " : "") +
( ((int)fileArray[i] > 9 && (int)fileArray[i] <= 99) ? " " : "") +
fileArray[i] + " : " +
" HEX=(0x" + byteToHex(fileArray) + ") : " +
" charValue=(" + (char)fileArray[i] + ")");
return fileArray;
* Sole entry point to the class and application.
* @param args Array of String arguments.
public static void main(String[] args) {
byte[] fileArray = null;
try {
fileArray = getBytesFromFile(new File("c:\\eicar.com"));
} catch (IOException e) {
e.printStackTrace();
if (fileArray != null) {
for (int i=0; i<fileArray.length; i++) {
System.out.println(
"fileArray[" + i + "] = " +
((int)fileArray[i] < 9 ? " " : "") +
( ((int)fileArray[i] > 9 && (int)fileArray[i] <= 99) ? " " : "") +
fileArray[i] + " : " +
" HEX=(0x" + byteToHex(fileArray[i]) + ") : " +
" charValue=(" + (char)fileArray[i] + ")");
Having main method helps you to run the file in JDEVELOPER or using JAVA.
DO not forget to load this class into the database.
And you create the pl/sql wrapper again as follows:
create or replace FUNCTION TOBY (pfilename in varchar2) RETURN VARCHAR2 iS
language java name
'ReadFileIntoByteArray.chk_file(java.lang.String) return byte[]';
And you call the function from sqlplus as follows:
Sql>Set serveroutput on size 20000;
Sql> call dbms_java.set_output(20000);
Sql> Select toby(“filename”) from dual; --
this file should be accessible, I mean you will not be able to send a file on your pc, from sql plus as sql/plus is running on your db server.
You will be able to see the output in sql plus:
If you are running it from the APEX:
When we use file browser widget from APEX, the file is stored in APEX_APPLICATION_FILES table. And we retrieve that into a variable and pass this variable to the function as follows:
DECLARE
scan_failed EXCEPTION;
x varchar2(400);
z number;
BEGIN
select filename into x from wwv_flow_files where name = :P1_FILE_NAME;
select my1.mycheck(x,toby(x)) into z from dual;
if z = 0 then
:P1_SUBJECT:= 'PASSED';
else
:P1_SUBJECT:= 'FAILED';
end if;
:P1_SCAN_RESULT := '** Scanning File **';
IF UPPER(:P1_SUBJECT) = 'PASSED' THEN
BEGIN
:P1_SCAN_FLAG := 'PASSED';
:P1_SCAN_RESULT := :P1_SCAN_RESULT || ' ** File passed scan **';
END;
ELSIF UPPER(:P1_SUBJECT) = 'FAILED' THEN
BEGIN
:P1_SCAN_FLAG := 'FAILED';
:P1_SCAN_RESULT := :P1_SCAN_RESULT || ' ** File failed scan **';
END;
ELSE
BEGIN
:P1_SCAN_FLAG := 'UNKNOWN';
:P1_SCAN_RESULT := :P1_SCAN_RESULT || ' ** Scan Is Not Conclussive **';
END;
END IF;
--IF :P1_SCAN_FLAG = 'FAILED'
-- THEN RAISE scan_failed;
--END IF;
EXCEPTION
WHEN OTHERS THEN
DELETE from APEX_APPLICATION_FILES WHERE name = :P1_FILE_NAME;
RAISE_APPLICATION_ERROR (-20000, 'seb OTHERS error encountered - file upload not allowed. Possible virus detected !');
raise;
END;
ACKNOWLEDMENTS:
1) JOHN SCOTT – who suggested this ICAP API in one of the threads which is my initial starting point in this direction.
2) VLAD KOFMAN who wrote the article on WWW.DEVELOPER.com
3) Mr. KIRAN –One of the engineers from Metalink, who helped me at every step of getting this java programs and pl/sql wrappers working. But for him, I would have not completed my project. -
Question on the upload attachments process in a request form
hi,
I have a question on the upload attachments process in a request form. I have 2 pages, one is a request form and the other is an attahment page
The request form let users fill the mandatory fields (e.g. name, email, address...) And in the form, there is a link (URL without submit) to the attachment page.
In the attachment page, users can upload the supporting file for their rquest. The file will be uploaded to APEX_APPLICATION_FILES view and then it will be copied it to a customized table (table A) and remove from the view.
When the users finish uploading files (i.e. the files are stored in table A), users need to press a "Done" button back to the request form to submit the form.
My question is:
As the request form is not yet submitted while the attached files are stored in table A, there is no request_id (request from table primary key generated in an Insert trigger after submission) is generated to tag with the files in table A. Is there any standard practice to do this?
What I am doing now is to generate a hidden value in sequence when user goes to the attachment page. The hidden value is stored in table A togehter with the files when uploading. When user goes back to the request form, the hidden value is passed back as session cache. When the request form is submitted, I make an update statement by using the hidden vaule in the Insert trigger to tag the request_id to the attached files in table A.
Is my way appropriate?
Thanks for advice.
cheers,
PongPong,
Yes, this would work just fine. You may want to consider enabling session state protection so that your process is not succeptable to URL tampering, which would cause a user to change the value of the REQUEST_ID in the URL and potentially associate other attahments with their request.
Thanks,
Scott -
Error while uploading files to AWS S3
Hello Experts
SAP PI 7.31
I am working on the following scenario. SAP PI receives a file attachment from SOAP response and the same needs to be uploaded to AWS S3 using REST (Advantco REST Adapter) (PUT Method):
File --> SAP PI --> REST
||
SOAP
To do this without using BPM, I am using RequestResponseBean and ResponseOnewayBean in Sender_File Adapter. In the module parameters, I have mentioned the details of the REST receiver channel. I am using PUT method in Receiver_REST and have checked option "keep attachments"
When I run this interface, the message fails while sending the file to Receiver_REST with the following errors:
Sender_File: ResponseOnewayBean - Attempt to process file failed with com.sap.engine.interfaces.messaging.api.exception.MessagingException: com.sap.aii.af.lib.ra.cci.XIAdapterException
Receiver_REST Adapter: Error: Broken pipe (Software version: 1.0.11)
This is the first time we are using REST Adapter to upload files to AWS S3. Could you please provide pointers on the same?
Thanks
Jaya05/08/17 11:22:31 java.io.IOException: java.io.IOException: sqlldr: not found
Does the client m/c have sqlldr installed (it will need Oracle client installation)? Does it have the ORACLE_HOME/bin directory in whatever path is appropriate for the client OS?
Cheers, APC
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