Howdy,
>initialization servlet that goes through the log4j.properties file
>making all the file locations be relative to my web app directory. The
>code is listed below.
Consider putting this code in a ServletContextListener's
contextInitialized() method, instead of a servlet's init() method, as
the latter can get called multiple times at the container's behest.
>My questions are:
>- Is this a reasonable way of doing things?
>- Is there a better way?
<snip>
> public void init() {
> String prefix = getServletContext().getRealPath("/");
Keep in mind prefix will be null if you're running out of a packed .war
file.
>
> for ( enum = props.propertyNames(); enum.hasMoreElements();
) {
> pName = (String ) enum.nextElement();
> if ( pName.startsWith("log4j.appender.") &&
> pName.endsWith(".File")) {
Instead of doing this whole property replacement scheme, why not just
specify a system-property based file name in your log4j configuration
file, e.g.
log4j.MyAppender.File=${CATALINA_HOME}/logs/myLog.txt
The above strategy and similar ones have been discussed on this list in
the past. You can search the archives for more information and
examples.
Yoav Shapira
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