请问，如何在tomcat启动时，将自己的自定义信息打印到控制台？

Question

 信息: TLD skipped. URI: http://java.sun.com/jstl/xml is already defined
六月 21, 2017 11:12:13 上午 org.apache.catalina.startup.TaglibUriRule body
信息: TLD skipped. URI: http://java.sun.com/jsp/jstl/xml is already defined
六月 21, 2017 11:12:13 上午 org.apache.catalina.startup.TldConfig execute
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
六月 21, 2017 11:12:13 上午 org.apache.catalina.core.ApplicationContext log
信息: No Spring WebApplicationInitializer types detected on classpath

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六月 21, 2017 11:12:14 上午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring root WebApplicationContext
六月 21, 2017 11:12:27 上午 org.apache.catalina.core.ApplicationContext log
信息: Initializing Spring FrameworkServlet 'springServlet'
========= Enabled refresh mybatis mapper =========
六月 21, 2017 11:12:38 上午 org.apache.catalina.startup.HostConfig deployDirectory
信息: Deploying web application directory C:\tomcat\apache-tomcat-7.0.75\webapps\docs
六月 21, 2017 11:12:38 上午 org.apache.catalina.startup.TldConfig execute
信息: At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for th

Answer 1

自己写一个listener

public class MyListener implements ServletContextListener {
@Override
public void contextInitialized(ServletContextEvent sce) {

    System.out.println(" ......................我佛慈悲......................");
    System.out.println("                       _oo0oo_                      ");
    System.out.println("                      o8888888o                     ");
    System.out.println("                      88\" . \"88                     ");
    System.out.println("                      (| -_- |)                     ");
    System.out.println("                      0\\  =  /0                     ");
    System.out.println("                    ___/‘---’\\___                   ");
    System.out.println("                  .' \\|       |/ '.                 ");
    System.out.println("                 / \\\\|||  :  |||// \\                ");
    System.out.println("                / _||||| -卍-|||||_ \\               ");
    System.out.println("               |   | \\\\\\  -  /// |   |              ");
    System.out.println("               | \\_|  ''\\---/''  |_/ |              ");
    System.out.println("               \\  .-\\__  '-'  ___/-. /              ");
    System.out.println("             ___'. .'  /--.--\\  '. .'___            ");
    System.out.println("          .\"\" ‘<  ‘.___\\_<|>_/___.’ >’ \"\".          ");
    System.out.println("         | | :  ‘- \\‘.;‘\\ _ /’;.’/ - ’ : | |        ");
    System.out.println("         \\  \\ ‘_.   \\_ __\\ /__ _/   .-’ /  /        ");
    System.out.println("     =====‘-.____‘.___ \\_____/___.-’___.-’=====     ");
    System.out.println("                       ‘=---=’                      ");
    System.out.println("                                                    ");
    System.out.println("....................佛祖开光 ,永无BUG...................");
}

@Override
public void contextDestroyed(ServletContextEvent sce) {

}

}

在web.xml中配置

    <listener>
        <listener-class>com.atguigu.listener.MyListener</listener-class>
    </listener>