Re: Commons fileUpload: write to disk permission problem
Hi again Tim :D
My servlet works fine now thanks a lot for your help!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
The servlet looks OK -- I didn't compile or run it or anything. When you
say a blank image -- are you requesting the servlet URL directly from the
browser? I'd snoop on the headers and see what comes back. It sounds
like
it got a 404 or some other error.
1. Check http://your-host/path/.../servlet?ID=n with a browser -- check
the
headers (TamperData, etc. for FireFox)
2. Check the Tomcat logs for a 40x or 50x error
3. Check the path in the .jsp img.../ tag and make sure it matches the
path for #1.
HTH,
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 8:31 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi Tim, and thanks for your answer. I did as you said and I made a
servlet
that handles the users' avatars, but all I can get from the servlet is a
blank image. Here's the servlet code:
-BEGIN OF FILE-
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import data.UserInfoBean; // class that holds infos about the user,
including its avatar
public class ShowAvatarServlet extends
javax.servlet.http.HttpServletimplements
javax.servlet.Servlet {
public ShowAvatarServlet() {
super();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
HttpSession session = request.getSession();
UserInfoBean userInfo = (UserInfoBean) session.getAttribute
(userInfo);
String format = infoUtente.getAvatarType();
//format can be image/jpeg, image/gif or image/x-png
byte[] image = infoUtente.getAvatar();
response.setContentType(format);
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(image);
outputStream.close();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
this.doPost(request, response);
}
}
-END OF FILE---
Am I doing something wrong? Thanks for your help!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
One way is to send back a reference to a servlet that knows how to
retrieve
the image. I.e., in your .jsp, say:
img src=/path/to/avatar/servlet?avatar=1234/
Where 1234 is the primary key (ID) field of the avatar in the
DB. Have
the
servlet set the response type to image/jpeg or image/png or whatever
is
appropriate, and then stream the bytes out of the blob from the DB.
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 4:48 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi David and thanks for the quick reply. I'll try to use the
database
to
store the avatars but... I don't know how I can show those images in
my
JSP
pages :S Can you please tell me how to do that? Sorry for the noobie
question... :)
Andrea
2006/6/26, David Delbecq [EMAIL PROTECTED]:
Do not write data in the webapplication folder, this folder is
supposed
to be overwritten when webapplication is redeployed and datas will
be
lost. Instead choose a folder in system you dedicate to your
webapplication datas and store your avatars there.
Or best use a database :)
Andrea Salvi wrote:
Hi there!
I'm making a forum application with JSP and Servlets, and I
wanted
to
give
to the final user the opportunity to upload an avatar to be
displayed
into
his posts. I found the Commons fileUpload library and it works
quite
well,
except for a thing: I can't save the image on the server's file
system,
apparently due to a permission problem (as my program tries to
write
in any
folder inside the web application context, Tomcat throws a
FileNotFoundException, saying that access to that folder is
denied).
Can you
tell me how can I fix this problem?
Regards,
Andrea
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED
Re: Commons fileUpload: write to disk permission problem
Do not write data in the webapplication folder, this folder is supposed to be overwritten when webapplication is redeployed and datas will be lost. Instead choose a folder in system you dedicate to your webapplication datas and store your avatars there. Or best use a database :) Andrea Salvi wrote: Hi there! I'm making a forum application with JSP and Servlets, and I wanted to give to the final user the opportunity to upload an avatar to be displayed into his posts. I found the Commons fileUpload library and it works quite well, except for a thing: I can't save the image on the server's file system, apparently due to a permission problem (as my program tries to write in any folder inside the web application context, Tomcat throws a FileNotFoundException, saying that access to that folder is denied). Can you tell me how can I fix this problem? Regards, Andrea - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Commons fileUpload: write to disk permission problem
Hi David and thanks for the quick reply. I'll try to use the database to store the avatars but... I don't know how I can show those images in my JSP pages :S Can you please tell me how to do that? Sorry for the noobie question... :) Andrea 2006/6/26, David Delbecq [EMAIL PROTECTED]: Do not write data in the webapplication folder, this folder is supposed to be overwritten when webapplication is redeployed and datas will be lost. Instead choose a folder in system you dedicate to your webapplication datas and store your avatars there. Or best use a database :) Andrea Salvi wrote: Hi there! I'm making a forum application with JSP and Servlets, and I wanted to give to the final user the opportunity to upload an avatar to be displayed into his posts. I found the Commons fileUpload library and it works quite well, except for a thing: I can't save the image on the server's file system, apparently due to a permission problem (as my program tries to write in any folder inside the web application context, Tomcat throws a FileNotFoundException, saying that access to that folder is denied). Can you tell me how can I fix this problem? Regards, Andrea - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Commons fileUpload: write to disk permission problem
One way is to send back a reference to a servlet that knows how to retrieve the image. I.e., in your .jsp, say: img src=/path/to/avatar/servlet?avatar=1234/ Where 1234 is the primary key (ID) field of the avatar in the DB. Have the servlet set the response type to image/jpeg or image/png or whatever is appropriate, and then stream the bytes out of the blob from the DB. Tim -Original Message- From: Andrea Salvi [mailto:[EMAIL PROTECTED] Sent: Monday, June 26, 2006 4:48 AM To: Tomcat Users List Subject: Re: Commons fileUpload: write to disk permission problem Hi David and thanks for the quick reply. I'll try to use the database to store the avatars but... I don't know how I can show those images in my JSP pages :S Can you please tell me how to do that? Sorry for the noobie question... :) Andrea 2006/6/26, David Delbecq [EMAIL PROTECTED]: Do not write data in the webapplication folder, this folder is supposed to be overwritten when webapplication is redeployed and datas will be lost. Instead choose a folder in system you dedicate to your webapplication datas and store your avatars there. Or best use a database :) Andrea Salvi wrote: Hi there! I'm making a forum application with JSP and Servlets, and I wanted to give to the final user the opportunity to upload an avatar to be displayed into his posts. I found the Commons fileUpload library and it works quite well, except for a thing: I can't save the image on the server's file system, apparently due to a permission problem (as my program tries to write in any folder inside the web application context, Tomcat throws a FileNotFoundException, saying that access to that folder is denied). Can you tell me how can I fix this problem? Regards, Andrea - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Commons fileUpload: write to disk permission problem
Hi Tim, and thanks for your answer. I did as you said and I made a servlet
that handles the users' avatars, but all I can get from the servlet is a
blank image. Here's the servlet code:
-BEGIN OF FILE-
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import data.UserInfoBean; // class that holds infos about the user,
including its avatar
public class ShowAvatarServlet extends javax.servlet.http.HttpServletimplements
javax.servlet.Servlet {
public ShowAvatarServlet() {
super();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
HttpSession session = request.getSession();
UserInfoBean userInfo = (UserInfoBean) session.getAttribute
(userInfo);
String format = infoUtente.getAvatarType();
//format can be image/jpeg, image/gif or image/x-png
byte[] image = infoUtente.getAvatar();
response.setContentType(format);
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(image);
outputStream.close();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
this.doPost(request, response);
}
}
-END OF FILE---
Am I doing something wrong? Thanks for your help!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
One way is to send back a reference to a servlet that knows how to
retrieve
the image. I.e., in your .jsp, say:
img src=/path/to/avatar/servlet?avatar=1234/
Where 1234 is the primary key (ID) field of the avatar in the DB. Have
the
servlet set the response type to image/jpeg or image/png or whatever is
appropriate, and then stream the bytes out of the blob from the DB.
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 4:48 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi David and thanks for the quick reply. I'll try to use the database to
store the avatars but... I don't know how I can show those images in my
JSP
pages :S Can you please tell me how to do that? Sorry for the noobie
question... :)
Andrea
2006/6/26, David Delbecq [EMAIL PROTECTED]:
Do not write data in the webapplication folder, this folder is
supposed
to be overwritten when webapplication is redeployed and datas will be
lost. Instead choose a folder in system you dedicate to your
webapplication datas and store your avatars there.
Or best use a database :)
Andrea Salvi wrote:
Hi there!
I'm making a forum application with JSP and Servlets, and I wanted
to
give
to the final user the opportunity to upload an avatar to be
displayed
into
his posts. I found the Commons fileUpload library and it works quite
well,
except for a thing: I can't save the image on the server's file
system,
apparently due to a permission problem (as my program tries to write
in any
folder inside the web application context, Tomcat throws a
FileNotFoundException, saying that access to that folder is denied).
Can you
tell me how can I fix this problem?
Regards,
Andrea
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
RE: Commons fileUpload: write to disk permission problem
The servlet looks OK -- I didn't compile or run it or anything. When you
say a blank image -- are you requesting the servlet URL directly from the
browser? I'd snoop on the headers and see what comes back. It sounds like
it got a 404 or some other error.
1. Check http://your-host/path/.../servlet?ID=n with a browser -- check the
headers (TamperData, etc. for FireFox)
2. Check the Tomcat logs for a 40x or 50x error
3. Check the path in the .jsp img.../ tag and make sure it matches the
path for #1.
HTH,
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 8:31 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi Tim, and thanks for your answer. I did as you said and I made a servlet
that handles the users' avatars, but all I can get from the servlet is a
blank image. Here's the servlet code:
-BEGIN OF FILE-
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import data.UserInfoBean; // class that holds infos about the user,
including its avatar
public class ShowAvatarServlet extends
javax.servlet.http.HttpServletimplements
javax.servlet.Servlet {
public ShowAvatarServlet() {
super();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
HttpSession session = request.getSession();
UserInfoBean userInfo = (UserInfoBean) session.getAttribute
(userInfo);
String format = infoUtente.getAvatarType();
//format can be image/jpeg, image/gif or image/x-png
byte[] image = infoUtente.getAvatar();
response.setContentType(format);
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(image);
outputStream.close();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
this.doPost(request, response);
}
}
-END OF FILE---
Am I doing something wrong? Thanks for your help!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
One way is to send back a reference to a servlet that knows how to
retrieve
the image. I.e., in your .jsp, say:
img src=/path/to/avatar/servlet?avatar=1234/
Where 1234 is the primary key (ID) field of the avatar in the DB. Have
the
servlet set the response type to image/jpeg or image/png or whatever is
appropriate, and then stream the bytes out of the blob from the DB.
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 4:48 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi David and thanks for the quick reply. I'll try to use the database
to
store the avatars but... I don't know how I can show those images in
my
JSP
pages :S Can you please tell me how to do that? Sorry for the noobie
question... :)
Andrea
2006/6/26, David Delbecq [EMAIL PROTECTED]:
Do not write data in the webapplication folder, this folder is
supposed
to be overwritten when webapplication is redeployed and datas will
be
lost. Instead choose a folder in system you dedicate to your
webapplication datas and store your avatars there.
Or best use a database :)
Andrea Salvi wrote:
Hi there!
I'm making a forum application with JSP and Servlets, and I wanted
to
give
to the final user the opportunity to upload an avatar to be
displayed
into
his posts. I found the Commons fileUpload library and it works
quite
well,
except for a thing: I can't save the image on the server's file
system,
apparently due to a permission problem (as my program tries to
write
in any
folder inside the web application context, Tomcat throws a
FileNotFoundException, saying that access to that folder is
denied).
Can you
tell me how can I fix this problem?
Regards,
Andrea
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users
Re: Commons fileUpload: write to disk permission problem
Hi again Tim :)
Thanks for the reply, but I'll be able to get my hands again on my project
only tomorrow. I'll try what you say, then I'll mail you again.
Cheers!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
The servlet looks OK -- I didn't compile or run it or anything. When you
say a blank image -- are you requesting the servlet URL directly from the
browser? I'd snoop on the headers and see what comes back. It sounds
like
it got a 404 or some other error.
1. Check http://your-host/path/.../servlet?ID=n with a browser -- check
the
headers (TamperData, etc. for FireFox)
2. Check the Tomcat logs for a 40x or 50x error
3. Check the path in the .jsp img.../ tag and make sure it matches the
path for #1.
HTH,
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 8:31 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi Tim, and thanks for your answer. I did as you said and I made a
servlet
that handles the users' avatars, but all I can get from the servlet is a
blank image. Here's the servlet code:
-BEGIN OF FILE-
package servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import data.UserInfoBean; // class that holds infos about the user,
including its avatar
public class ShowAvatarServlet extends
javax.servlet.http.HttpServletimplements
javax.servlet.Servlet {
public ShowAvatarServlet() {
super();
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
HttpSession session = request.getSession();
UserInfoBean userInfo = (UserInfoBean) session.getAttribute
(userInfo);
String format = infoUtente.getAvatarType();
//format can be image/jpeg, image/gif or image/x-png
byte[] image = infoUtente.getAvatar();
response.setContentType(format);
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(image);
outputStream.close();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
this.doPost(request, response);
}
}
-END OF FILE---
Am I doing something wrong? Thanks for your help!
Andrea
2006/6/26, Tim Lucia [EMAIL PROTECTED]:
One way is to send back a reference to a servlet that knows how to
retrieve
the image. I.e., in your .jsp, say:
img src=/path/to/avatar/servlet?avatar=1234/
Where 1234 is the primary key (ID) field of the avatar in the
DB. Have
the
servlet set the response type to image/jpeg or image/png or whatever
is
appropriate, and then stream the bytes out of the blob from the DB.
Tim
-Original Message-
From: Andrea Salvi [mailto:[EMAIL PROTECTED]
Sent: Monday, June 26, 2006 4:48 AM
To: Tomcat Users List
Subject: Re: Commons fileUpload: write to disk permission problem
Hi David and thanks for the quick reply. I'll try to use the
database
to
store the avatars but... I don't know how I can show those images in
my
JSP
pages :S Can you please tell me how to do that? Sorry for the noobie
question... :)
Andrea
2006/6/26, David Delbecq [EMAIL PROTECTED]:
Do not write data in the webapplication folder, this folder is
supposed
to be overwritten when webapplication is redeployed and datas will
be
lost. Instead choose a folder in system you dedicate to your
webapplication datas and store your avatars there.
Or best use a database :)
Andrea Salvi wrote:
Hi there!
I'm making a forum application with JSP and Servlets, and I
wanted
to
give
to the final user the opportunity to upload an avatar to be
displayed
into
his posts. I found the Commons fileUpload library and it works
quite
well,
except for a thing: I can't save the image on the server's file
system,
apparently due to a permission problem (as my program tries to
write
in any
folder inside the web application context, Tomcat throws a
FileNotFoundException, saying that access to that folder is
denied).
Can you
tell me how can I fix this problem?
Regards,
Andrea
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
-
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e
Re: Commons fileUpload: write to disk permission problem
Tim Lucia wrote: Have the servlet set the response type to image/jpeg or image/png or whatever is appropriate, and then stream the bytes out of the blob from the DB. Hm, that is something interesting what I need also. As I quickly wrote down that code it should be: byte[] mybytes=// get image from the database response.setContentType(image/jpeg); ServletOutputStream stream = response.getOutputStream(); stream.write(mybytes); Right? Andrea Salvi (or whoever who started this discussion), please post code you will use :). -- Mladen Adamovic http://www.online-utility.org http://www.shortopedia.com http://www.froola.com http://www.gift-idea4u.com - To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
