主要发现的问题就两点

1)JDK的安装，才开始的时候看到网上教程说使用RPM包安装，然后去官网下载RPM安装包进行安装，将安装包拷贝到/usr目录下，使用 #rpm -ivh jdk-7-linux-x64.rpm命令安装，安装过程中出现了错误，百度说是因为没有执行权限，然后#chmod 777 jdk-7-linux-x64.rmp，依然错误，搜了N多方法，都不好弄，最后只能是使用tar包安装，直接解压tar文件，然后配置环境变量，坑又来了。。。。习惯性的使用分号作间隔，windows一直都是这样，结果执行#source /etc/profile 时，提示没有权限。。。坑，其实是因为Linux的配置文件是，必须使用冒号:，这个提示真够蛋疼的。。

JAVA_HOME=/usr/local/jdk1.6.0_21/ JRE_HOME=/usr/local/jdk1.6.0_21/jre/ PATH=$PATH:$JAVA_HOME/bin:$JRE_home/bin CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar export JAVA_HOME export JRE_HOME export PATH export CLASSPATH

2）Liferay的向导配置，直接部署tomcat绑定liferay的应用包发布到Linux系统中，打开浏览器访问8080，结果直接500错误，后台有一个

Java.lang.IndexOutOfBoundException错误

08:03:49,000 WARN  [http-bio-8080-exec-2][code_jsp:128] {code="500", msg="", uri=/favicon.ico}javax.servlet.ServletException: java.lang.ArrayIndexOutOfBoundsException: 0        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:105)        at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)        at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.ArrayIndexOutOfBoundsException: 0        at com.liferay.portal.util.PortalInstances._getDefaultCompanyId(PortalInstances.java:341)        at com.liferay.portal.util.PortalInstances._getCompanyId(PortalInstances.java:198)        at com.liferay.portal.util.PortalInstances.getCompanyId(PortalInstances.java:68)        at com.liferay.portal.servlet.filters.absoluteredirects.AbsoluteRedirectsFilter.doFilterTry(AbsoluteRedirectsFilter.java:60)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:183)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)        ... 26 more一月 20, 2015 8:03:49 上午 org.apache.catalina.core.ApplicationDispatcher invoke严重: Servlet.service() for servlet jsp threw exceptionjava.lang.ArrayIndexOutOfBoundsException: 0        at com.liferay.portal.util.PortalInstances._getDefaultCompanyId(PortalInstances.java:341)        at com.liferay.portal.util.PortalInstances._getCompanyId(PortalInstances.java:198)        at com.liferay.portal.util.PortalInstances.getCompanyId(PortalInstances.java:68)        at com.liferay.portal.util.PortalImpl.getCompanyId(PortalImpl.java:1475)        at com.liferay.portal.util.PortalImpl.getCompany(PortalImpl.java:1441)        at com.liferay.portal.util.PortalImpl.getRelativeHomeURL(PortalImpl.java:4451)        at com.liferay.portal.util.PortalImpl.getHomeURL(PortalImpl.java:2539)        at com.liferay.portal.util.PortalUtil.getHomeURL(PortalUtil.java:682)        at org.apache.jsp.errors.code_jsp._jspService(code_jsp.java:165)        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:489)        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)        at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:467)        at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:338)        at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:428)        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:201)        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)        at java.lang.Thread.run(Thread.java:745)