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//Log4j from Apache is required
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import javax.servlet.*;
import javax.servlet.http.*;
public class ContextLogger implements ServletContextListener {
private Logger log;
public ContextLogger() {
}
public void contextDestroyed(ServletContextEvent sce) {
String name = sce.getServletContext().getServletContextName();
//log request of the INFO level
log.info("ServletContext shut down: " + (name == null ? "" : name));
}
public void contextInitialized(ServletContextEvent sce) {
ServletContext context = sce.getServletContext();
String realPath = context.getRealPath("/");
String fileSep = System.getProperty("file.separator");
if (realPath != null && (!realPath.endsWith(fileSep)))
realPath = realPath + fileSep;
//Initialize logger here:
PropertyConfigurator.configure(realPath + "WEB-INF/classes/"
+ context.getInitParameter("logger-config"));
log = Logger.getLogger(ContextLogger.class);
String name = context.getServletContextName();
//log request about servlet context being initialized
log.info("ServletContext ready: " + (name == null ? "" : name));
}
}
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