把下载的解压后导入到eclipse中，修改app.server.properties为
      app.server.type=tomcat
##
## Tomcat
##
    app.server.tomcat.version=5.5
    app.server.tomcat.dir=${project.dir}/../tomcat
    app.server.tomcat.bin.dir=${app.server.tomcat.dir}/bin
    app.server.tomcat.classes.global.dir=${app.server.tomcat.dir}/common/classes
    app.server.tomcat.classes.portal.dir=${app.server.tomcat.portal.dir}/WEB-INF/classes
    app.server.tomcat.deploy.dir=${app.server.tomcat.dir}/webapps
    app.server.tomcat.lib.endorsed.dir=${app.server.tomcat.dir}/common/endorsed
    app.server.tomcat.lib.global.dir=${app.server.tomcat.dir}/common/lib/ext
    app.server.tomcat.lib.portal.dir=${app.server.tomcat.portal.dir}/WEB-INF/lib
    app.server.tomcat.lib.support.dir=${app.server.tomcat.dir}/server/lib
    app.server.tomcat.portal.dir=${app.server.tomcat.deploy.dir}/ROOT
    app.server.tomcat.log.dir=${app.server.tomcat.dir}/logs
    app.server.tomcat.temp.dir=${app.server.tomcat.dir}/temp
    app.server.tomcat.work.dir=${app.server.tomcat.dir}/work
    app.server.tomcat.zip.name=liferay-portal-tomcat-5.5-${downloads.version}.zip
    app.server.tomcat.zip.url=${sourceforge.mirror}/${app.server.tomcat.zip.name}

build成功后启动报错：
23:21:06,953 ERROR [[/]:3715] Error configuring application listener of class com.liferay.portal.servlet.PortalSessionListener
java.lang.NoClassDefFoundError: com/liferay/portal/kernel/events/ActionException
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2328)
at java.lang.Class.getConstructor0(Class.java:2640)
at java.lang.Class.newInstance0(Class.java:321)
at java.lang.Class.newInstance(Class.java:303)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3713)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
由于对portal不怎么熟悉，这个错误不知道怎么解决，难道是build的时候少build了文件，或者是还需要修改其它的配置？

我想知道怎么把独立的ext的portal和另一版本的Liferay集成在一起怎么做？

少了这个文件,估计是你的源代码没这个文件,build之后也没有