以下是一个典型的Liferay Server的启动过程：
01.May 29, 2012 3:09:32 AM org.apache.catalina.core.AprLifecycleListener init
02.INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Charles\Softwares\Java\jdk1.6.0_05\bin;.......
03.May 29, 2012 3:09:34 AM org.apache.coyote.AbstractProtocol init
04.INFO: Initializing ProtocolHandler ["http-bio-8080"]
05.May 29, 2012 3:09:34 AM org.apache.coyote.AbstractProtocol init
06.INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
07.May 29, 2012 3:09:34 AM org.apache.catalina.startup.Catalina load
08.INFO: Initialization processed in 2008 ms
09.May 29, 2012 3:09:34 AM org.apache.catalina.core.StandardService startInternal
10.INFO: Starting service Catalina
11.May 29, 2012 3:09:34 AM org.apache.catalina.core.StandardEngine startInternal
12.INFO: Starting Servlet Engine: Apache Tomcat/7.0.23
13.May 29, 2012 3:09:34 AM org.apache.catalina.startup.HostConfig deployDescriptor
14.INFO: Deploying configuration descriptor D:\Liferay\RI\liferay-portal-6.1.0-ce-ga1\tomcat-7.0.23\conf\Catalina\localhost\ROOT.xml
15.Loading jar:file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/system.properties
16.03:09:36,919 INFO [EasyConf:122] Refreshed the configuration of all components
17.03:09:37,184 INFO [ConfigurationLoader:56] Properties for jar:file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal loaded from [file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/classes/portal-developer.properties, file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/portal-ide.properties, file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/portal-setup-wizard.properties, jar:file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal.properties]
18.Loading jar:file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal.properties
19.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/portal-setup-wizard.properties
20.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/portal-ide.properties
21.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/webapps/ROOT/WEB-INF/classes/portal-developer.properties
22.03:09:46,379 INFO [DialectDetector:80] Determine dialect for HSQL Database Engine 2
23.03:09:46,379 WARN [DialectDetector:95] Liferay is configured to use Hypersonic as its database. Do NOT use Hypersonic in production. Hypersonic is an embedded database useful for development and demo'ing purposes. The database settings can be changed in portal-ext.properties.
24.03:09:46,426 INFO [DialectDetector:145] Found dialect org.hibernate.dialect.HSQLDialect
25.Starting Liferay Portal Community Edition 6.1.0 CE (Paton / Build 6100 / January 6, 2012)
26.03:10:08,994 INFO [BaseDB:406] Database supports case sensitive queries
27.03:10:09,898 INFO [PluginPackageUtil:1096] Reading plugin package for the root context
28.03:10:32,825 INFO [AutoDeployDir:105] Auto deploy scanner started for D:\Liferay\RI\liferay-portal-6.1.0-ce-ga1\deploy
29.May 29, 2012 3:10:39 AM org.apache.catalina.startup.HostConfig deployDirectory
30.INFO: Deploying web application directory D:\Liferay\RI\liferay-portal-6.1.0-ce-ga1\tomcat-7.0.23\webapps\chat-portlet
31.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/service.properties
32.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/service.properties
33.03:10:47,522 INFO [PluginPackageUtil:1099] Reading plugin package for chat-portlet
34.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/service.properties
35.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/portlet.properties
36.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/portlet.properties
37.03:10:48,660 INFO [HookHotDeployListener:1901] Registering hook for chat-portlet
38.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/portal.properties
39.03:10:48,769 INFO [HookHotDeployListener:978] Hook for chat-portlet is available for use
40.03:10:48,769 INFO [PortletHotDeployListener:614] Registering portlets for chat-portlet
41.Loading file:/D:/Liferay/RI/liferay-portal-6.1.0-ce-ga1/tomcat-7.0.23/temp/0-chat-portlet/WEB-INF/classes/portlet.properties
42.03:10:48,894 INFO [PortletHotDeployListener:433] 1 portlet for chat-portlet is available for use
43....
44.May 29, 2012 3:12:09 AM org.apache.coyote.AbstractProtocol start
45.INFO: Starting ProtocolHandler ["http-bio-8080"]
46.May 29, 2012 3:12:09 AM org.apache.coyote.AbstractProtocol start
47.INFO: Starting ProtocolHandler ["ajp-bio-8009"]
48.May 29, 2012 3:12:09 AM org.apache.catalina.startup.Catalina start
49.INFO: Server startup in 154806 ms
我们可以这样来看整个Liferay启动的过程：
1-12行是Tomcat的启动，包括初始化协议处理器，启动Catalina容器和Servlet容器。
13-14行开始部署应用，因为我们在server.xml中配置了defaultHost=localhost:
<!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine defaultHost="localhost" name="Catalina">
所以它去加载 %TOMCAT_HOME%\conf\Catalina\localhost 下的ROOT.xml
然后它就去读webapps 目录下的ROOT应用了，这也就是进入liferay框架了
15-21行就开始读取ROOT 应用中的所有配置：
第17行指定了从哪些地方可以读取配置，于是第18-21行分别读取这些配置文件。
22-24行用DialectDetector来探测Liferay 使用的数据库，因为没有在portal-ext.properties中定义使用并连接的数据库，所以这里使用默认的Hypersonic数据库
第25行开始正式启动Liferay服务器，这里我们使用的是Community Edition(另外Liferay还有一个Enterprise Edition)
第28行开始启用自动包扫描，它会扫描D:\Liferay\RI\liferay-portal-6.1.0-ce-ga1\deploy 目录，需要指出的是，Liferay有deploy和direct-deploy 两种情况：
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