The image would work because it is a separate hit (not "embedded").
For general info, if you did want to embed you would use <jsp:include>
You can also have the servlet map to something like /files/* and parse
the path to find out which file is being requested - this makes the
file url feel more native than /reader?file=fff
One more thing, since you are serving the file and not the web
container, you need to handle the Content-Type tag on your own. I am
not aware of anyway to access tomcat's internal table but creating
something of your own should not be a big issue (see this table http://www.iangraham.org/books/html4ed/appb/mimetype.html)
.
For an exercise this isn't a must but some browsers will take issue
with the server not reporting content-type correctly.
Yuval Perlov
www.r-u-on.com
On Dec 14, 2008, at 9:29 PM, Robert Drescher wrote:
Exactly. Since we are supposed to write an application that's running
without extracting the war, Steves approach was my first try, but
it's not
working that way :(
Also, symlinks are a good way in posix systems, but then the app is
not
platform independent anymore.
The approach of a reader servlet sounds good, but how can I
implement this
to include the files into a jsp then?
In other words, if "/App/Reader" is my reader servlet, can I include
an
image into jsp with <img src="/App/Reader?file=image.jpg" />?
2008/12/14 Yuval Perlov <[email protected]>
The problem with this approach is that when you upgrade the war
file the
files will be deleted.
I believe It is better to save the files outside the web app and
deliver
them either with a symbolic link from within your war file or using
a reader
servlet.
Yuval Perlov
www.r-u-on.com
On Dec 14, 2008, at 7:17 PM, Steve Ochani wrote:
Send reply to: Tomcat Users List <[email protected]>
Date sent: Sun, 14 Dec 2008 12:56:17 +0100
From: Robert Drescher <[email protected]>
To: [email protected]
Subject: File system resource for static content
Hello users,
I'm trying to find the best practice way for implementing the
following: I want a servlet to perform file uploads and to store
the
files in the local filesystem. This part is not that hard to do
as i'm
currently writing into the javax.servlet.context.tempdir.
The problem is that i need to store the files in a directory, that
will be accessible from the web. My tutor at university gave me the
hint that this is best done with a resource which points to a local
directory and that's mapped to the webapp.
So I imagine that http://localhost:8080/WebTest/Upload is my
servlet
mapping and that http://localhost:8080/WebTest/files/ points to
this
resource.
I do something very similar using apache commons upload project.
I have a separate files directory in my webapp directory and I use
the
following code to
initialize a path to save my uploaded files:
ServletContext sc = getServletContext();
String path = sc.getRealPath("/files");
I can then access a file in the that files directory via
http://server:8080/appname/files/filename
-Steve O.
But all my research in the documentation did not bring any
success. I
know that i can specify resources in the context.xml, but not how I
specify the path on the local system or how to do the mapping... If
anyone already did this and can provide me with configuration
examples, I'd very much appreciate it.
I am using Tomcat 5.5 on Linux (not the pre-packaged), the
application
is deployed as war, my context.xml is located in META-INF
------------------------------------------------------------ <?xml
version="1.0" encoding="UTF-8"?> <Context privileged="true"
antiResourceLocking="false"
antiJARLocking="false"
path="WebTest"
/>
-------------------------------------------------------------
My web.xml is the following:
-------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd";>
<description>Test Internetapplikationen</description>
<servlet>
<description>Controller Servlet</description>
<display-name>Controller Servlet</display-name>
<servlet-name>Controller</servlet-name>
<servlet-class>org.agility.webtest.control.Controller</servlet-cla
ss>
</servlet>
<servlet-mapping>
<servlet-name>Controller</servlet-name>
<url-pattern>/Controller</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>Login.jsp</welcome-file>
</welcome-file-list>
</web-app>
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Thank you very much for your help
Robert
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