Garret Wilson wrote:
It's as if two instances of Tomcat are being run in two separate JVMS:
one using the server.xml configuration, and another attempting to
deploy the .war files using some default configuration. The first set
of initialized servlets continue to run and accept connections. What's
wrong here?
I've found the problem. If you remember, my server.xml had this:
<Host name="www.example.com" appBase="/var/web/apps"
unpackWARs="false" autoDeploy="false"
xmlValidation="false" xmlNamespaceAware="false">
<Alias>example.com</Alias>
<Context path="" docBase="www.example.com.war">
<Parameter name="dataDirectory"
value="/var/web/data/www.example.com/"/>
</Context>
</Host>
Tomcat would deploy my .war file as specified, using the given init
parameter. But then, because my .war file was in the appBase directory
(here "/var/web/apps"), Tomcat would going through and deploying the
.war file a second time even though autoDeploy was set to "false". One
way to fix this it to change the appBase so that my .war file wasn't in
the application base directory:
<Host name="www.example.com" appBase="/var/web"
unpackWARs="false" autoDeploy="false"
xmlValidation="false" xmlNamespaceAware="false">
<Alias>example.com</Alias>
<Context path="" docBase="apps/www.example.com.war">
<Parameter name="dataDirectory"
value="/var/web/data/www.example.com/"/>
</Context>
</Host>
But the easier way is to add deployOnStartup="false" to the host
configuration, like this:
<Host name="www.example.com" appBase="/var/web/apps"
unpackWARs="false" autoDeploy="false" deployOnStartup="false"
xmlValidation="false" xmlNamespaceAware="false">
<Alias>example.com</Alias>
<Context path="" docBase="www.example.com.war">
<Parameter name="dataDirectory"
value="/var/web/data/www.example.com/"/>
</Context>
</Host>
Sure enough, there is a small note on this at
http://tomcat.apache.org/tomcat-5.5-doc/config/host.html#Automatic%20Application%20Deployment
: "When using automatic deployment, the docBase defined by an XML
Context file should be outside of the appBase directory. If this is not
the case difficulties may be experienced deploying the web application
or the application may be deployed twice."
Well, that's why I turned off autoDeploy---but it seems I need to turn
off deployOnStartup as well.
Garret
Thanks in advance,
Garret
Garret Wilson wrote:
Tomcat 5.5.16 seems to call a servlet's init() method several times,
and the specific init parameter is missing in all but the first.
I have a simple server.xml that includes:
<Host name="www.example.com" appBase="/var/web/apps"
unpackWARs="false" autoDeploy="false"
xmlValidation="false" xmlNamespaceAware="false">
<Alias>example.com</Alias>
<Context path="" docBase="www.example.com.war">
<Parameter name="dataDirectory"
value="/var/web/data/www.example.com/"/>
</Context>
</Host>
In www.example.com.war I have a web.xml file that includes two
instances of MyServlet, with servlet names of myServlet1 and
myServlet2, mapped to "/*" and "/example/*", respectively.
Tomcat does the following, which I find odd:
1. myServlet1.init() is called. The init parameter "dataDirectory" is
correctly set to "/var/web/data/www.example.com/".
2. catalina.out indicates "Jun 25, 2006 2:07:26 PM
org.apache.catalina.startup.HostConfig deployWAR".
3. myServlet.init is called(). The init parameter "dataDirectory"
returns null.
4. myServlet2.init is called(). The init parameter "dataDirectory"
returns null.
(Then steps 3 and 4 are repeated, presumably because steps 2 and 3
throw NullPointerExceptions, which results from the missing init
parameter.)
This confuses me:
* Why is myServlet1.init() called twice?
* Why isn't myServlet2.init() called before the second call to
myServlet1.init()?
* Why is the init parameter "dataDirectory" only available in the
first call to myServlet1.init()?
Thanks for any insight,
Garret
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