当我开始运行我的spring应用程序tomcat时，将ContextRefreshedEvent触发两次。请参阅StackTrace。

Dec 20, 2013 6:07:56 PM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:SpringValidations' did not find a matching property.
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:/Program Files/Java/jre6/lib/i386;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\Program Files\Microsoft SQL Server\90\Tools\binn\;F:\sub\svn\bin;%DERBY_HOME%\bin;D:\Lal\Lab\SW\apache-maven-3.0.4/bin;C:\Program Files\TortoiseSVN\bin;C:\Program Files\Java\jdk1.6.0_25\bin;;F:\Eclipse\sts-2.9.2.RELEASE;
Dec 20, 2013 6:07:56 PM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Dec 20, 2013 6:07:56 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 289 ms
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.16
Dec 20, 2013 6:07:56 PM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(F:\anand\Spring_Training\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\SpringValidations\WEB-INF\lib\servlet-api-2.5.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardContext addApplicationListener
INFO: The listener "org.springframework.web.context.ContextLoaderListener" is already configured for this context. The duplicate definition has been ignored.
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardContext addApplicationListener
INFO: The listener "org.springframework.web.util.Log4jConfigListener" is already configured for this context. The duplicate definition has been ignored.
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardContext addApplicationListener
INFO: The listener "org.springframework.web.context.ContextLoaderListener" is already configured for this context. The duplicate definition has been ignored.
Dec 20, 2013 6:07:56 PM org.apache.catalina.core.StandardContext addApplicationListener
INFO: The listener "org.springframework.web.context.ContextLoaderListener" is already configured for this context. The duplicate definition has been ignored.
log4j:WARN Continuable parsing error 108 and column 11
log4j:WARN The content of element type "logger" must match "(param*,level?,appender-ref*)".
log4j:WARN Continuable parsing error 114 and column 11
log4j:WARN The content of element type "logger" must match "(param*,level?,appender-ref*)".
Dec 20, 2013 6:07:57 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
log4j:WARN No appenders could be found for logger (org.springframework.web.context.ContextLoader).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

--------------- Context Refreshed -----------------
:::::::::::::::::::::::: Now you can Start the Server Initialization ! :::::::::::::::::::::::::::::

Dec 20, 2013 6:07:57 PM org.apache.catalina.core.ApplicationContext log
INFO: Set web app root system property: 'webapp.root' = [F:\anand\Spring_Training\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\SpringValidations\]
Dec 20, 2013 6:07:57 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing log4j from [F:\anand\Spring_Training\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\SpringValidations\WEB-INF\classes\log4j.xml]
log4j:WARN Continuable parsing error 108 and column 11
log4j:WARN The content of element type "logger" must match "(param*,level?,appender-ref*)".
log4j:WARN Continuable parsing error 114 and column 11
log4j:WARN The content of element type "logger" must match "(param*,level?,appender-ref*)".
Dec 20, 2013 6:07:57 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring FrameworkServlet 'dispatcher'

--------------- Context Refreshed -----------------
:::::::::::::::::::::::: Now you can Start the Server Initialization ! :::::::::::::::::::::::::::::

Dec 20, 2013 6:07:58 PM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Dec 20, 2013 6:07:58 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Dec 20, 2013 6:07:58 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/16  config=null
Dec 20, 2013 6:07:58 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1659 ms

我的Initializer类别为

public class ApplicationListenerBean implements ApplicationListener<ContextRefreshedEvent> {

    private String message;

    public void onApplicationEvent(ContextRefreshedEvent event) {
        System.out.println("--------------- Context Refreshed -----------------");
        System.out.println( ":::::::::::::::::::::::: " +message+ " :::::::::::::::::::::::::::::");

       // Other stuff like logger Initialization , Server Initailization etc..
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

}

我的applicationContext.xml将为

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org./dtd/spring-beans.dtd">

<beans>

    <bean id="test" class="com.pointel.applicationListener.ApplicationListenerBean">
        <property name="message"
            value="Now you can Start the Server Initialization !">
        </property>
    </bean>

</beans>

我的web.xml将是，

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    <display-name>SpringValidations</display-name>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>


    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>/WEB-INF/classes/log4j.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>

</web-app>

我的调度程序servlet将为

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">


    <!-- Application Message Bundle -->
    <bean id="messageSource"
        class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <!-- <property name="basename" value="/WEB-INF/messages/messages.properties" /> -->
        <property name="basenames">
            <list>
                <value>/WEB-INF/messages/messages.properties</value>
                <value>/WEB-INF/messages/mymessages.properties</value>
            </list>
        </property>
        <property name="cacheSeconds" value="3000" />
    </bean>

    <!-- Scans the classpath of this application for @Components to deploy as beans -->
    <context:component-scan base-package="com.pointel.controllers" />

    <!-- Configures the @Controller programming model -->
    <mvc:annotation-driven />

    <!-- <context:annotation-config /> -->

    <!-- Resolves view names to protected .jsp resources within the /WEB-INF/views 
        directory -->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

我知道吗，为什么 ---------------上下文刷新----------------- 消息出现两次？

编辑： 我知道有很多方法可以初始化spring应用程序。但what is the best and the efficient way to initialize an Spring application like logger,Domain server startup to get protocol connection , stating the threads etc... ?

希望大家都能理解我的问题。