testlog.jsp

《精通JSP编程 》源代码(赵强那本) 很有用的源代码

<%@ page import="org.apache.log4j.*" %>
<%
  // Get an instance of the helloappLogger
   Logger helloappLogger = Logger.getLogger("helloappLogger");
  // Get an instance of the childLogger
    Logger childLogger = Logger.getLogger("helloappLogger.childLogger");

 
    // Load the properties using the PropertyConfigurator
    String path = application.getRealPath("/") + "/WEB-INF/log4j.properties";
    PropertyConfigurator.configure(path);

    // Log Messages using the Parent Logger
    helloappLogger.debug("This is a log message from the " +
      helloappLogger.getName());
    helloappLogger.info("This is a log message from the " +
      helloappLogger.getName());
    helloappLogger.warn("This is a log message from the " +
      helloappLogger.getName());
    helloappLogger.error("This is a log message from the " +
      helloappLogger.getName());
    helloappLogger.fatal("This is a log message from the " +
      helloappLogger.getName());


    // Log Messages using the Child Logger
    childLogger.debug("This is a log message from the " +
      childLogger.getName());
    childLogger.info("This is a log message from the " +
      childLogger.getName());
    childLogger.warn("This is a log message from the " +
      childLogger.getName());
    childLogger.error("This is a log message from the " +
      childLogger.getName());
    childLogger.fatal("This is a log message from the " +
      childLogger.getName());
  
%>