個人在Tomcat簡單部署了一個web專案，console啟動日誌。

2015-9-13 20:36:39 org.apache.catalina.core.AprLifecycleListener init
資訊: 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 (x86)\Java\jdk1.6.0_45\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\DMIX;D:\Program Files\TortoiseSVN\bin;C:\Program Files\Java\jdk1.7.0_79\bin;D:\wls1036_dev\wlserver\common\bin;D:\Program Files (x86)\instantclient_11_2;.
2015-9-13 20:36:40 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:helloworld' did not find a matching property.
2015-9-13 20:36:40 org.apache.tomcat.util.digester.SetPropertiesRule begin
警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:springmvc' did not find a matching property.
2015-9-13 20:36:41 org.apache.coyote.http11.Http11Protocol init
資訊: Initializing Coyote HTTP/1.1 on http-8080
2015-9-13 20:36:41 org.apache.catalina.startup.Catalina load
資訊: Initialization processed in 2786 ms
2015-9-13 20:36:41 org.apache.catalina.core.StandardService start
資訊: Starting service Catalina
2015-9-13 20:36:41 org.apache.catalina.core.StandardEngine start
資訊: Starting Servlet Engine: Apache Tomcat/6.0.44
2015-9-13 20:36:42 org.apache.catalina.core.ApplicationContext log
資訊: Initializing Spring FrameworkServlet 'hello'
2015-9-13 20:36:42 org.springframework.web.servlet.DispatcherServlet initServletBean
資訊: FrameworkServlet 'hello': initialization started
2015-9-13 20:36:43 org.springframework.web.context.support.XmlWebApplicationContext prepareRefresh
資訊: Refreshing WebApplicationContext for namespace 'hello-servlet': startup date [Sun Sep 13 20:36:42 CST 2015]; root of context hierarchy
2015-9-13 20:36:43 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
資訊: Loading XML bean definitions from ServletContext resource [/WEB-INF/hello-servlet.xml]
2015-9-13 20:36:43 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
資訊: Pre-instantiating singletons in org.s

[email protected]83e1e: defining beans [welcomeController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/hello] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/hello.*] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/hello/] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/welcome] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/welcome.*] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/welcome/] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping registerHandler
資訊: Mapped URL path [/welcome.html] onto handler 'welcomeController'
2015-9-13 20:36:44 org.springframework.web.servlet.DispatcherServlet initServletBean
資訊: FrameworkServlet 'hello': initialization completed in 1830 ms
2015-9-13 20:36:44 org.apache.catalina.startup.HostConfig deployDescriptor
資訊: Deploying configuration descriptor host-manager.xml
2015-9-13 20:36:44 org.apache.catalina.startup.HostConfig deployDescriptor
資訊: Deploying configuration descriptor manager.xml
2015-9-13 20:36:44 org.apache.catalina.startup.HostConfig deployDirectory
資訊: Deploying web application directory docs
2015-9-13 20:36:44 org.apache.catalina.startup.HostConfig deployDirectory
資訊: Deploying web application directory examples
2015-9-13 20:36:45 org.apache.catalina.core.ApplicationContext log
資訊: ContextListener: contextInitialized()
2015-9-13 20:36:45 org.apache.catalina.core.ApplicationContext log
資訊: SessionListener: contextInitialized()
2015-9-13 20:36:45 org.apache.catalina.startup.HostConfig deployDirectory
資訊: Deploying web application directory ROOT
2015-9-13 20:36:45 org.apache.coyote.http11.Http11Protocol start
資訊: Starting Coyote HTTP/1.1 on http-8080
2015-9-13 20:36:45 org.apache.jk.common.ChannelSocket init
資訊: JK: ajp13 listening on /0.0.0.0:8009
2015-9-13 20:36:45 org.apache.jk.server.JkMain start
資訊: Jk running ID=0 time=0/53  config=null
2015-9-13 20:36:45 org.apache.catalina.startup.Catalina start
資訊: Server startup in 4039 ms
2015-9-13 20:39:28 org.springframework.web.servlet.PageNotFound noHandlerFound
警告: No mapping found for HTTP request with URI [/springmvc/welcome1] in DispatcherServlet with name 'hello'

spring框架版本：spring-framework-3.2.9.RELEASE

首先，說明一下console日誌的特殊之處，下面兩行是一條日誌。時間+類名+方法名+日誌級別+提示內容（這個日誌的配置檔案我還沒來得及查詢其位置，可能是Tomcat或Spring框架的jar包中，後期找到也分享出來）

瞭解控制檯日誌格式，對理解整個過程很有幫助。

2015-9-13 20:36:42 org.springframework.web.servlet.DispatcherServlet initServletBean
資訊: FrameworkServlet 'hello': initialization started

下面摘自：http://blog.csdn.net/zhulinu/article/details/7305247  寫得很不錯

ApplicationContext是Spring的核心，Context我們通常解釋為上下文環境，我想用“容器”來表述它更容易理解一些，ApplicationContext則是“應用的容器”了；在Web應用中，我們會用到WebApplicationContext，WebApplicationContext繼承自ApplicationContext；WebApplicationContext的初始化方式和BeanFactory.ApplicationContext有所區別,因為WebApplicationContext需要ServletContext例項,也就是說它必須擁有Web容器的前提下才能完成啟動的工作.有過Web開發經驗的讀者都知道可以在web.xml中配置自啟動的Servlet或定義Web容器監聽器(ServletContextListener),藉助著兩者中的任何一個,我們就可以啟動Spring Web應用上下文的工作.

Spring分別提供了用於啟動WebApplicationContext的Servlet和Web容器監聽器:

org.springframework.web.context.ContextLoaderServlet;

org.springframework.web.context.ContextLoaderListener.

這兩個方法都是在web應用啟動的時候來初始化WebApplicationContext，我個人認為Listerner要比Servlet更好一些，因為Listerner監聽應用的啟動和結束，而Servlet得啟動要稍微延遲一些，如果在這時要做一些業務的操作，啟動的前後順序是有影響的。

配置例子如下：
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> 

那麼在ContextLoaderListener和ContextLoaderServlet中到底做了什麼呢？ 
以ContextLoaderListener為例，我們可以看到 
public void contextInitialized(ServletContextEvent event) { 
this.contextLoader = createContextLoader(); 
this.contextLoader.initWebApplicationContext(event.getServletContext()); 
} 
protected ContextLoader createContextLoader() { 
return new ContextLoader(); 
} 
ContextLoader是一個工具類，用來初始化WebApplicationContext，其主要方法就是initWebApplicationContext，我們繼續追蹤initWebApplicationContext這個方法（具體程式碼我不貼出，大家可以看Spring中的原始碼），我們發現，原來ContextLoader是把WebApplicationContext（XmlWebApplicationContext是預設實現類）放在了ServletContext中，ServletContext也是一個“容器”，也是一個類似Map的結構，而WebApplicationContext在ServletContext中的KEY就是WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE，我們如果要使用WebApplicationContext則需要從ServletContext取出，Spring提供了一個WebApplicationContextUtils類，可以方便的取出WebApplicationContext，只要把ServletContext傳入就可以了。