Everyone,
I found the answer to my second question, "Why isn't myServlet2.init()
called before the second call to myServlet1.init()?" It turns out it was
being called, but my debug trace statements had been redirected because
my init() method had successfully redirected debug output.
So the sequence now looks like this:
1. myServlet1.init() is called. The init parameter "dataDirectory" is
correctly set to "/var/web/data/www.example.com/", and debug output is
successfully redirected.
2. myServlet2.init() is called. The init parameter "dataDirectory" is
correctly set to "/var/web/data/www.example.com/", and debug output is
still successfully redirected.
3. catalina.out indicates "Jun 25, 2006 4:23:40 PM
org.apache.catalina.startup.HostConfig deployWAR" followed by "INFO:
Deploying web application archive www.example.com.war
4. myServlet1.init() is called. The init parameter "dataDirectory"
returns null, the static variable is no longer set, and output is no
longer redirected.
5. myServlet2.init() is called. The init parameter "dataDirectory"
returns null, the static variable is no longer set, and output is no
longer redirected..
Note that in step 1 I set a static variable in my servlet that is
verified in step 2. But by step 4 the static variable is gone!
Note that if I change unpackWARs="true", these errors still occur, even
if I restart Tomcat after the WARs have been unpacked! (The only
difference is that, in step 4, I have access to the real path of the
WEB-INF directory.)
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?
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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