RE: Can servlet write to file in /WEB-INF?
Hi, Making URLConnection to a directory under WEB-INF, is the same like writing this url in the explorer. However, You can't go directly to any directory under WEB-INF in that way, which justifies your failure of writing to this directory. You can write to files in this directory, if you don't use URLConnection. That's what I think Tamir -Original Message- From: john-paul delaney [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 22, 2002 10:48 AM To: TC user list Subject: Can servlet write to file in /WEB-INF? I was trying to see if I could write to a file in the /WEB-INF directory but I couldn't get it to work - is there a problem with a servlet writing to this directory or is it just me (again ;( ) ? thanks /j-p. URL url = context.getResource(/contextTest.txt); URLConnection con = url.openConnection(); con.setDoOutput(true); OutputStream out = con.getOutputStream(); PrintWriter pw = new PrintWriter(new OutputStreamWriter(out)); pw.println(foo); pw.close(); out.close(); --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Can servlet write to file in /WEB-INF?
Instead there is a method in the servlet context : getRealPath(String relativefilename) - then you can open a normal fileoutputstream. -Original Message- From: tamir [mailto:[EMAIL PROTECTED]] Sent: 24 June 2002 11:31 To: 'Tomcat Users List' Subject: RE: Can servlet write to file in /WEB-INF? Hi, Making URLConnection to a directory under WEB-INF, is the same like writing this url in the explorer. However, You can't go directly to any directory under WEB-INF in that way, which justifies your failure of writing to this directory. You can write to files in this directory, if you don't use URLConnection. That's what I think Tamir -Original Message- From: john-paul delaney [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 22, 2002 10:48 AM To: TC user list Subject: Can servlet write to file in /WEB-INF? I was trying to see if I could write to a file in the /WEB-INF directory but I couldn't get it to work - is there a problem with a servlet writing to this directory or is it just me (again ;( ) ? thanks /j-p. URL url = context.getResource(/contextTest.txt); URLConnection con = url.openConnection(); con.setDoOutput(true); OutputStream out = con.getOutputStream(); PrintWriter pw = new PrintWriter(new OutputStreamWriter(out)); pw.println(foo); pw.close(); out.close(); --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] DISCLAIMER This e-mail and any attachments thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by persons other than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Can servlet write to file in /WEB-INF?
Hi, getRealPath() and its ilk are really very evil. If the webapp isn't exploded into the filesystem - i.e. it's run straight from the war file then you wont be able to write to the filesystem under WEB-INF anyway. And that's not addressing *why* a webapp requires filesystem access and the related security issues of allowing a servlet/jsp to write into a protected area like WEB-INF either. Anyway, my 2p says you should be doing something like:- File temp = (File)getServletContext().getAttribute(javax.servlet.context.tempdir); then make a dir/file under this for your output. Hope this helps. Les -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 24 June 2002 09:13 To: [EMAIL PROTECTED] Subject: RE: Can servlet write to file in /WEB-INF? Instead there is a method in the servlet context : getRealPath(String relativefilename) - then you can open a normal fileoutputstream. -Original Message- From: tamir [mailto:[EMAIL PROTECTED]] Sent: 24 June 2002 11:31 To: 'Tomcat Users List' Subject: RE: Can servlet write to file in /WEB-INF? Hi, Making URLConnection to a directory under WEB-INF, is the same like writing this url in the explorer. However, You can't go directly to any directory under WEB-INF in that way, which justifies your failure of writing to this directory. You can write to files in this directory, if you don't use URLConnection. That's what I think Tamir -Original Message- From: john-paul delaney [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 22, 2002 10:48 AM To: TC user list Subject: Can servlet write to file in /WEB-INF? I was trying to see if I could write to a file in the /WEB-INF directory but I couldn't get it to work - is there a problem with a servlet writing to this directory or is it just me (again ;( ) ? thanks /j-p. URL url = context.getResource(/contextTest.txt); URLConnection con = url.openConnection(); con.setDoOutput(true); OutputStream out = con.getOutputStream(); PrintWriter pw = new PrintWriter(new OutputStreamWriter(out)); pw.println(foo); pw.close(); out.close(); --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] DISCLAIMER This e-mail and any attachments thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by persons other than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Can servlet write to file in /WEB-INF?
Right, keep in mind the whole WAR file aspect. If your web app is not packaged as a WAR file then it's less of an issue, and you could use getRealPath, but if it is a WAR - even if it gets expanded by the container, you can't use getRealPath and should write to a temp directory, or some other directory you set up (you could store the location of this other directory as a property in your web.xml file, etc.). -Original Message- From: Les Hughes [mailto:[EMAIL PROTECTED]] Sent: Monday, June 24, 2002 3:08 AM To: 'Tomcat Users List' Subject: RE: Can servlet write to file in /WEB-INF? Hi, getRealPath() and its ilk are really very evil. If the webapp isn't exploded into the filesystem - i.e. it's run straight from the war file then you wont be able to write to the filesystem under WEB-INF anyway. And that's not addressing *why* a webapp requires filesystem access and the related security issues of allowing a servlet/jsp to write into a protected area like WEB-INF either. Anyway, my 2p says you should be doing something like:- File temp = (File)getServletContext().getAttribute(javax.servlet.context.tempdir); then make a dir/file under this for your output. Hope this helps. Les -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: 24 June 2002 09:13 To: [EMAIL PROTECTED] Subject: RE: Can servlet write to file in /WEB-INF? Instead there is a method in the servlet context : getRealPath(String relativefilename) - then you can open a normal fileoutputstream. -Original Message- From: tamir [mailto:[EMAIL PROTECTED]] Sent: 24 June 2002 11:31 To: 'Tomcat Users List' Subject: RE: Can servlet write to file in /WEB-INF? Hi, Making URLConnection to a directory under WEB-INF, is the same like writing this url in the explorer. However, You can't go directly to any directory under WEB-INF in that way, which justifies your failure of writing to this directory. You can write to files in this directory, if you don't use URLConnection. That's what I think Tamir -Original Message- From: john-paul delaney [mailto:[EMAIL PROTECTED]] Sent: Saturday, June 22, 2002 10:48 AM To: TC user list Subject: Can servlet write to file in /WEB-INF? I was trying to see if I could write to a file in the /WEB-INF directory but I couldn't get it to work - is there a problem with a servlet writing to this directory or is it just me (again ;( ) ? thanks /j-p. URL url = context.getResource(/contextTest.txt); URLConnection con = url.openConnection(); con.setDoOutput(true); OutputStream out = con.getOutputStream(); PrintWriter pw = new PrintWriter(new OutputStreamWriter(out)); pw.println(foo); pw.close(); out.close(); --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] DISCLAIMER This e-mail and any attachments thereto may contain information which is confidential and/or protected by intellectual property rights and are intended for the sole use of the recipient(s) named above. Any use of the information contained herein (including, but not limited to, total or partial reproduction, communication or distribution in any form) by persons other than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your cooperation. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Can servlet write to file in /WEB-INF?
On Sat, 22 Jun 2002, john-paul delaney wrote: I was trying to see if I could write to a file in the /WEB-INF directory but I couldn't get it to work - is there a problem with a servlet writing to this directory or is it just me (again ;( ) ? thanks /j-p. URL url = context.getResource(/contextTest.txt); URLConnection con = url.openConnection(); con.setDoOutput(true); OutputStream out = con.getOutputStream(); PrintWriter pw = new PrintWriter(new OutputStreamWriter(out)); pw.println(foo); pw.close(); out.close(); Well, I've never tried it before, but what you've got is pretty much as described in an old Jason Hunter article: http://www.javaworld.com/jw-12-1998/jw-12-servletapi-p3.html I don't know if things have changed since then. Of course, another issue is whether the user that the servlet is running as has the appropriate permissions to write into that file/directory. Milt Epstein Research Programmer Systems and Technology Services (STS) Campus Information Technologies and Educational Services (CITES) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Can servlet write to file in /WEB-INF?
Thanks Milt... yes I'm reading servlet programming by the same author, he'd written a servlet example that reads and writes a counter to an external file resource but it seems the file location varies depending on the container implementation - I was trying to understand how to determine an exact location of a resource for reading from, and writing to. Any further advice gratefully accepted. /j-p. On Sat, 22 Jun 2002, Milt Epstein wrote: Well, I've never tried it before, but what you've got is pretty much as described in an old Jason Hunter article: http://www.javaworld.com/jw-12-1998/jw-12-servletapi-p3.html I don't know if things have changed since then. Of course, another issue is whether the user that the servlet is running as has the appropriate permissions to write into that file/directory. Milt Epstein Research Programmer Systems and Technology Services (STS) Campus Information Technologies and Educational Services (CITES) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Can servlet write to file in /WEB-INF?
On Sat, 22 Jun 2002, john-paul delaney wrote: Thanks Milt... yes I'm reading servlet programming by the same author, he'd written a servlet example that reads and writes a counter to an external file resource but it seems the file location varies depending on the container implementation - I was trying to understand how to determine an exact location of a resource for reading from, and writing to. Any further advice gratefully accepted. Not sure I have any other great suggestions. Are you getting any kind of error messages or anything in the logs? Did you check in different directories to see if the file was created somewhere? Another possibility is to try reading a file -- you might have to try it in a few different locations to see what path (as the argument to getResource()) matches up with what directory. On Sat, 22 Jun 2002, Milt Epstein wrote: Well, I've never tried it before, but what you've got is pretty much as described in an old Jason Hunter article: http://www.javaworld.com/jw-12-1998/jw-12-servletapi-p3.html I don't know if things have changed since then. Of course, another issue is whether the user that the servlet is running as has the appropriate permissions to write into that file/directory. Milt Epstein Research Programmer Systems and Technology Services (STS) Campus Information Technologies and Educational Services (CITES) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] --- JUSTATEST Art Online www.justatest.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] Milt Epstein Research Programmer Systems and Technology Services (STS) Campus Information Technologies and Educational Services (CITES) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
