On 5/29/2012 8:15 PM, Christopher Schultz wrote:
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Kiran,
On 5/28/12 6:38 PM, Kiran Badi wrote:
I am using Tomcat 7.0.11
Upgrade. http://tomcat.apache.org/security-7.html
Yup, I already have 7.0.27 and this one is tied with netbeans and I
really do not want to disturb this environment.
and environment is win 7 home premium with servlet/jsp/jstl with
netbeans 7.01
I have form where in I upload the image to the folder C://xx
using apache commons file upload and then store the file name to
the DB.Everything is good till here.
Good.
Then when I want to display the same image, I query the database
using servlet and store the image name to attribute like
request.setAttribute("collegesimg", img);
now via front end jsp, I want to display the same image stored in
attribute,
I do
<img src="C://UploadedImages/${collegesimg}" width="80%"
height="500">
Assuming that C://xx and C://UploadedImages are the same thing, then
this will work only if your remote user is actually on your own
machine (the server). File paths wont work as URLs unless they are local.
Yes they are same and aware of this information.
Now this works perfectly fine,but FF/Chrome fails saying cannot
load local resources with 404 status.
Now I can understand that this is FF/Chrome by default do allow to
access local file system on the client.Good till here.
But I am not able to figure out where do I store the images now so
that I can display it correctly and they remain in place when I
redeploy the app?
First, you need to reference them from your web pages using http://
URLs like this:
<img src="http://server/UploadedImages/${collegesimg}"; width="80%"
height="500">
Yes I am trying this now,but still getting 404 with
http://localhost:8080/servername/UploadedImages/image.jpeg(Yes image do
exist in folder)
Here is what I tried after reading googling and binging
I added this to server.xml,
<Context path="/ourstory"
docBase="c:\UploadedImages"
reloadable="true"
crossContext="true" />
I know something is incorrect here or totally wrong.
(Are you sure its appropriate to have images always at 500px and 80%
parent-width?)
I am currently experimenting with designs.Again this is not full
screenwidth, they are sized based on container sizes.I have form
enclosed withing div.
Is their any place in Tomcat's dir structure where the folder is
still called root folder and when we undeploy or redeploy , images
still remains intact ?
If you put your uploaded pictures into your webapp's deployment
directory, you are very likely to have them deleted when your webapp
is undeployed. So, put them somewhere else. Since you are using Tomcat
7, your best bet is to use the "alias" feature:
http://tomcat.apache.org/tomcat-7.0-doc/config/context.html#Standard_Implementation
(Read about the 'aliases' configuration attribute)
This aliases feature is really helpful feature.But my bad, I can see the
importance of this feature,but unfortunately not able to get much info
on net wrt to Tomcat 7.
I did try to add context element in Meta-inf/Context.xml and server.xml,
in all the cases build creation failed probably due to malformed context
xml.
I will try again tommarrow.Seems like I need to understand as how
Netbeans sets up the context for the project and then accordingly I need
to proceed.
By any chance
Is their any example for this anywhere on Tomcat site ? .
Also I believe that if I implement this aliases , I might not need to
write streaming servlet to read images or have httpd infront of tomcat.I
want to avoid both since I already have many jsp/servlets and httpd ,i
dont see a reason as my application is dynamic and plain DB
calls.Nothing really complicated.
My tomcat 7.0.11 structure looks something like below,
It doesn't matter, because you need to put your files elsewhere.
Directory of C:\Program Files\Apache Software Foundation\Apache
Tomcat 7.0.11\webapps
03/30/2012 07:40 AM<DIR> . 03/30/2012 07:40 AM<DIR>
.. 06/12/2011 05:16 AM<DIR> docs 06/12/2011 05:16 AM
<DIR> examples 03/30/2012 07:40 AM<DIR> files
06/12/2011 05:16 AM<DIR> host-manager 06/12/2011 05:16
AM<DIR> manager 06/12/2011 05:16 AM<DIR> ROOT
If you want to make this server public, you are going to want to
undeploy everything you don't need: do you need the host-manager, etc.?
No I dont need these ,I will check and remove once I decide to put this
on live.
Thanks chris for your reply.
- -chris
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