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The "HowTo" page has been changed by KonstantinKolinko: http://wiki.apache.org/tomcat/HowTo?action=diff&rev1=107&rev2=108 Comment: Correct some typos. Update "system properties" tip. == How do I load a properties file? == Here are the three most popular ways:: - * Use a classloader's getResource to get an url to the properties file and load it into the Properties. The properties file must be located within the webapp classpath (i.e. either WEB-INF/classes/... or in a jar. + * Use a classloader's getResource to get an url to the properties file and load it into the Properties. The properties file must be located within the webapp classpath (i.e. either {{{WEB-INF/classes/...}}} or in a jar in {{{WEB-INF/lib/}}}). A challenge is to get the classloader when you are in a static initializer: @@ -67, +67 @@ p.load(is); is.close(); }}} + == How do I log requests ? == See AccessLogValve == Can I set Java system properties differently for each webapp? == - No. If you can edit Tomcat's startup scripts, you can add "-D" options to Java. But there is no way to add such properties in web.xml or the webapp's context. + No. If you can edit Tomcat's startup scripts (or better create a {{{setenv.sh}}} file), you can add "-D" options to Java. But there is no way in Java to have different values of system properties for different classes in the same JVM. + + There are some other methods available, like using {{{ServletContext.getContextPath()}}} to get the context name of your web application and locate some resources accordingly, or to define {{{<context-param>}}} elements in {{{WEB-INF/web.xml}}} file of your web application and then set the values for them in Tomcat context file ({{{META-INF/context.xml}}}). See http://tomcat.apache.org/tomcat-7.0-doc/config/context.html . == How do I use log4j for all Tomcat log output? == To have Tomcat use log4j universally, place both `log4j.jar` and the Jakarta `commons-logging.jar` into the `$TOMCAT_HOME/common/lib` directory. Create your log4j properties file as `$TOMCAT_HOME/common/classes/log4j.properties` and configure the root logger. Here is the basic `log4j.properties` that I used to do this myself: --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
