Henri Gomez wrote:
Henri Gomez a écrit :
3. Provide a complete working configuration example for a cluster of
tomcat servers with a front-end tomcat as well, i.e. a pure tomcat-only
solution. We already have the jvmRoute mechanism, but I think it needs
more examples/documentation so that people start using it.
One of the features I'd like to see in Tomcat 5.x, a features which prevent me to use TC 4.0.x, 4.1.x and 5.x on my production server is
the ability to use external entities from within a web.xml.
Let me explain :
We have many customers which run the same application but with differents settings. All the settings are present in the web.xml
via the use of external entities which are included at run-time.
+1
The security mechanism in TC 4.x and higher (due to digester)
avoid me to use such easy configuration tuning and so we have
to stay with Tomcat 3.3.x for now.
I'm probably missing something here....why the digester suffer from that limitation? What kind of security exception are you seeing. If you give all permissions to the Digester, does it change something?
i don't know how to setup digester to do it but the last time I tried with TC 4.1.x, I couldn't get external entities :
Here is a sample web.xml :
In my case env and defusr are located in ../../etc/webapp/app.xml which differs from one client to another. With the current limitation (tested on TC 4.1.x), I couldn't have them loaded from ../../etc/webapp/app.xml...
---
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2.2.dtd";
[ <!ENTITY % appconf SYSTEM "../../etc/webapp/app.xml"> %appconf; ]>
<web-app>
<context-param>
<param-name>def.user</param-name>
<param-value>&defusr;</param-value>
</context-param> <servlet>
<servlet-name>startup</servlet-name>
<servlet-class>my.StartupServlet</servlet-class> <init-param>
<param-name>env</param-name>
<param-value>&envid;</param-value>
</init-param></servlet>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<welcome-file-list>
<welcome-file>/index</welcome-file>
</welcome-file-list>
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