File problem - checking the existence of a remote file
I have absolute paths to several text files from a ftp server (which don't require any
authentication and can be accessed over the internet).
I am trying to write a Java method that can check any of the above absolute ftp file
paths and returns true/false depending on whether the file exists/doesn't exist.
I tried somewhat this way:
File current_file = new File(absolute_file_path);
// absolute_file_path comes as a parameter
// e.g. "ftp://ftp.test.com/myfile.txt"
if(current_file.exists()) return true;
// if the file exists return true
return false;
// otherwise return false
Then I ran the program in my local machine which has internet access. But it returned
false for all the files (even if the file exists). Seems like it's unable to get those
files.
Could someone please tell me how can I rewrite my program so that it can be executed
locally.
Thanks,
SQ
Does anyone know if URL and URLConnection support FTP
directly? I can imagine downloads being simple, but
how about uploads? Never tried with FTP myself.Yes, they do. But uploads don't work properly with Java 1.3. (Note: I only know this because I've seen questions asked about it here, not from personal experience.) If I wanted to know whether a certain file existed on an FTP server, I would use an FTP client that could tell me that. Such as the Jakarta Commons/Net FTP client.
Similar Messages
-
Any means to check the existence of a .pdf file before opening in SAP GUI
Dear,
I've learnt from one of the thread that there is a sample program SAP_PDF_VIEWER_DEMO that allows us to open a .pdf file within a SAP windows.
However, I would like to know if there are any means to perform a checking on the existence of the .pdf file first before calling the method open_document as coded in the demo program.
Thanks a lot for your advise in advance,
Franciswhere is this pdf file is ? in user desktop?
if yes you can simply use cl_gui_html_viewer for viewing pdf files. and you can use cl_gui_frontend_service=>file_exists method to check whether the file exists
Raja -
How to check the existence of file without any error dialog?
Hi everybody,
I am trying update some labview programs from LV6.1 to LV7.1, I used the
function "File/Dictionary Info" to check if the file
exists or not (if the size=0 then file does not exist), and it ran well with
LV6.1, but now it shows every time a labview error dialog
about "LabView: file not found..." with 7.1, if this file dosn't exist.
Sometimes I feel that it is really stupid to show the dialog, because I
can write handling by myself, if the error should be handled, and
I don't want all the process is interrupted because of such dialogs. Is
there any way to shut the dialog down or check the existence of
file smoothly?
Thanks a lot!
L.WangHello,
The dialog is probably appearing because you have Auto Error Handling turned on. This feature is turned on by default in LabVIEW 7.0. You should go to VI Properties (Ctrl-I) > Execution and deselect "Enable automatic error handling". Also you should go to Tools > Options > New and Changed in LabVIEW 7.x and deselect "Enable automatic error handling in new VIs". If you never want to see one of those dialogs again, you can also deselect "Enaeble automatic error handling dialogs"...I wouldn't recommend this, however, as you would never know if one of your VIs had this setting enabled...you would only find out once somebody else tried to use your VI on another LabVIEW install.
-D
Darren Nattinger, CLA
LabVIEW Artisan and Nugget Penman -
Problem with the EFI system partition's file system.
I installed latest yosemite 10.10.2 update - did a verify disk on “WDC WD1001FALS-403AA0 Media” (internal HD on my iMac 21.5-inch, Mid 2011) and got
Problems were found with the partition map which might prevent booting
Error: The partition map needs to be repaired because there’s a problem with the EFI system partition’s file system.
However a verify disk on the volume partition gets a clean bill of health!
I haven't done a 'repair disk' yet. Thought I'd check if anybody else has same message first.
CheersI had issues where my MacPro 8-core would not boot after the 10.7.4 upgrade, but my MacBook Air 13" 2011 upgrade worked just fine.
I had to restore my MacPro HD from my TimeMachine back up. Apparently, the Softraid raid drivers that I use on my MacPro are not compatible yet with 10.7.4. See here for more info:
http://macperformanceguide.com/blog/2012/20120511_1-MacOSX-SoftRAID.html
I contacted Softraid and they are already aware of the issues and are working with Apple for a fix.
Cheers.
Bud -
XSQL-001: Cannot locate requested XSQL file. Check the name.
I downloaded oracle 9i and the latest beta of XDK for Java and
encountered the following error:
Oracle XSQL Servlet Page Processor 9.0.2.0.0C (Beta)
XSQL-001: Cannot locate requested XSQL file. Check the name.
Since I am using JBuilder5, I configured the bundled Tomcat to
reference the XSQL Servlet as per the described docbase setting.
n.b.: I am not running a web or application server at this time.
Tomcat is my servlet container which I directly connect to from
my browser.
I extracted the XDK into the oracle\ora90 folders. I extracted
XDK to my oracle\ora90 folder, since
the "bundled" XDK is located there already, and it appeared to
be lacking the XDK for Java.
I read the xdkload.bat, and it appeared to be required to
resolve earlier undefined methods
issues as per the documentation, so I gambled and ran it. BTW,
unresolved methods was my initial problem.
The attached files describe a method not defined error. Not sure
how to proceed. Thanks.I should have added the associated Tomcat trace. Note the
exception, java.lang.NoSuchMethodError, which is possibly the
real issue.
2001-10-21 06:23:07 - ContextManager: Adding context Ctx
( /examples )
2001-10-21 06:23:07 - ContextManager: Adding context Ctx
( /admin )
2001-10-21 06:23:07 - ContextManager: Adding context Ctx( /test )
2001-10-21 06:23:07 - Ctx( /xsql ): Set debug to 1
2001-10-21 06:23:07 - ContextManager: Adding context Ctx( /xsql )
2001-10-21 06:23:07 - ContextManager: Adding context Ctx( )
2001-10-21 06:23:07 - Ctx( /xsql ): XmlReader - init /xsql
E:\oracle\ora90\xdk\demo\java\xsql
2001-10-21 06:23:07 - Ctx( /xsql ): Reading E:\oracle\ora90
\xdk\demo\java\xsql\WEB-INF\web.xml
2001-10-21 06:23:07 - Ctx( /xsql ): Loading -2147483646 jsp
2001-10-21 06:23:08 - PoolTcpConnector: Starting
HttpConnectionHandler on 8080
2001-10-21 06:23:08 - PoolTcpConnector: Starting
Ajp12ConnectionHandler on 8007
2001-10-21 06:31:37 - Ctx( /xsql ): Exception in: R( /xsql
+ /fly/index.xsql + null) - java.lang.NoSuchMethodError
at oracle.xml.xsql.XSQLConfigManager.reloadConfigFile
(XSQLConfigManager.java:480)
at
oracle.xml.xsql.XSQLConfigManager.insureConfigurationIsLoaded
(XSQLConfigManager.java:190)
at oracle.xml.xsql.XSQLPageManager.getPage
(XSQLPageManager.java:73)
at oracle.xml.xsql.XSQLPageRequestImpl.getXSQLPage
(XSQLPageRequestImpl.java:454)
at oracle.xml.xsql.XSQLPageProcessor.process
(XSQLPageProcessor.java:85)
at oracle.xml.xsql.XSQLServlet.doGet(XSQLServlet.java:60)
at javax.servlet.http.HttpServlet.service
(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service
(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService
(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service
(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service
(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service
(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConne
ction(HttpConnectionHandler.java:210)
at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484) -
How to check the resolution of a pdf file using Acrobat 9 pro?
How to check the resolution of a pdf file using Acrobat 9 pro?
PDF files don't have one resolution, but may have none or many different resolutions, one per image. You can check the maximum/minimum resoluion with preflight in Acrobat Pro, but not in Adobe Reader.
-
Error in loading the WSDL file. Check the error log for more details
Hello,
I am trying to create a Import Adaptive Webservice Model. I am using the WSDL:
http://www.abysal.com/soap/AbysalEmail.wsdl
I am getting the below error when I choose WSDL source as UDDI or file (I am not using any logical destination)
"Error in loading the WSDL file. Check the error log for more details."
Where can i see the error log? And what is the solution to fix this?
I am able to create the model if i save the wsdl locally on my machine and choose Local File System or File as the WSDL source. But at runtime this fails as the application tries to read the WSDL for metadata info and it looks into the application server for this file.
I also tried creating the old webservice model. And it is able to create the model. But I feel I need to use the new model as this one is deprecated.
Thanks,
SachinHi
For the logs you can search in this directory
Goto Window->Show view->Other->PDE Runtim->Error Log
please try this may it would help you out, try to create a model for you Web Service using Web Service Model (DEPRECATED)
See this link:
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/ep/integration%2bof%2bweb%2bservices%2b-%2bdifferent%2bscenarios -
MacBook Pro OS x Mavericks. I have Sandisk 256GB SSD and I am getting a below error message.
ALERT: The partition map needs to be repaired because there's a problem with the EFI system partition's file system.
Does anyone know how to resolve this error and fix it ? unfortunately I don't have a Time Machine backup. Thanks!Have you tried to run the verify/repair permissions and verify/repair disk through the recovery disk? If that didn't work then I would reinstall the OS after backing up. If that still doesn't work I would take it in.
-
How to reliably check the resolution for a pdf file?
Should I use preflight to reliably check the resolution for a pdf file? I have posted my frustrations on http://forums.adobe.com/thread/978098
You can create your own preflight tool to check for the dpi of embedded images.
-
Error(12,61): Parse of component type files failed, check the adf-config
I got this error when i wanted to deploy CreditCardValidation
Error(12,61): Parse of component type files failed, check the adf-config.xml file : "java.lang.reflect.InvocationTargetException"I got this error when i wanted to deploy CreditCardValidation
Error(12,61): Parse of component type files failed, check the adf-config.xml file : "java.lang.reflect.InvocationTargetException" -
Hi;
i have install 2 MCS 7816 (publisher and suscriber) with call manager version 6.1, i have load the files licenses for the publisher and the phones, but when i load the file license for the suscriber in publisher server i had the error messeage :
Error : License File Exception (check the log file for details): ENT_PE_NODE not found in datastore
what s the solution.
Thanks for your helpHello,
I seen this issue before, all you have to do is Contact Cisco Licensing team. In order to generate new licenses for your server.
Thanks, -
Is there any FUNCTION I can use to check the existence of a USER?
Hi,
Is there any FUNCTION I can use to check the existence of a USER? I dont want to write a function by myself to access usr01 directly.
Thanks in advance.You can use FM USER_EXISTENCE_CHECK
Thanks
Seshu -
How to check the existence of DB400 library from java
Hi all,
I actunally need to validate a DB400 library via java. so is there any way to check the existence of DB400 library from java side.
Thanks in advance.Hi Sarvan,
You might not even need a function to tell you if a record exists or not.
Here in below example i do a check with exists .you will find couple of other ways too..
create table t as select * from emp where deptno=10now i set salary of every person present in table 'T' to 1111 in emp table.
update emp e
set sal=1111
where exists
(select 1
from t
where t.empno=e.empno) Remember that plain SQL will always outperform PLSQL.
Hope it helps
CKLP
Edited by: CKLP on Sep 26, 2011 3:41 AM -
Procedure to check the existence of Indexes
I have a procedure whcih drops all the indexes, when the same procedure is executed again, it gives error "object does not exists" (obviously)
I want to avoid this error, how can I check the existence of index inside the procedure, so that the procedure will check if the index exists before deleting the index?
Is there a ready-made procedure available for such scenario?
Thanks in advanceThe other approach is to catch the exception in your script, i.e.
BEGIN
EXECUTE IMMEDIATE 'DROP INDEX <<index name>>';
EXCEPTION
WHEN OTHERS THEN
-- Drop failed. Do something to record the failure.
NULL;
END;Now, most of the time, you'll want to catch a few specific exceptions and you'll want to do something when you catch them (i.e. generate a log entry).
Justin -
Programmatically check the existence of objects in the system
Hi,
Is there a way to programmatically check the existence of objects? The idea is I'll accept a list of names of objects and their object types and then programmatically check their existence in the system?
Can you point me to a resource on how to do it?
Thanks in advance.
--CarlHi.
All custom objects (z, y) being referred to a program. May it be z or y table, data element, domain, sapscript form, function module/group.
The goal is actually to be able to transport a program from a source machine to a target machine. The objects being referred to from the program must also be transported, of course, for it to run properly. Thus, the need to check the objects' existence.
Thanks.
--Carl
Maybe you are looking for
-
Headphone trouble: No longer playing music through headphones
Hey guys! I bought a used iPod touch several years ago just to have something to listen to music that was easy to use. It has worked fine for me until now. I cannot get it to connect to my headphones. Everything else on the iPod works fine: Apps,
-
ISE, WLC Device Profiling
Hi, I hope someone can provide some advice/assistance. I am currently trialling ISE 1.1.1 on VM with a Cisco 5500 WLC 7.2.110.0. I have configured this setup so clients authenticate to the WLC via 802.1x and use the ISE as a AAA Server. I have setup
-
Integrity check fails on column key
Dear DBA's, I am getting error while creating encrypted tablespace "ORA-S8342: Integrity check fails on column key" actually i am trying to work on Wallet, I created wallet key without auto login option initially and i created the tablespaces, user a
-
Ccmsetup client install failure
Greetings, I have run ccmclean.exe to uninstall the CM client, run "winmgmt /resetrepository" to rebuild the WMI repository, and manually tried re-installing the CM client from a local directory on the machine. I tried the above one more time, but I
-
When i build my motion file the text looks fine, but when i create the DVD file and play it on the TV it looks rasterized and unaliased, is there a preference or setting to get text to be as sharp and as clear as possible? Any input would be great! t