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我尝试使用运行Tomcat的Liferay 5.5-5.2.3安装solr 1.4.1;我的系统是RHEL5。使用Solr安装liferay：管理控制台无法访问+启动时出现异常
下面我解释我遇到的错误;然后我给出我的solr安装的细节。
当我启动Tomcat，我有以下情况除外：
INFO: Solr home set to '/opt/apache-solr-1.4.1/example/solr/'
Aug 4, 2010 10:44:26 AM org.apache.solr.common.SolrException log
SEVERE:
javax.xml.transform.TransformerException: Unknown error in XPath.
at org.apache.xpath.XPath.execute(XPath.java:363)
at org.apache.xpath.jaxp.XPathImpl.eval(XPathImpl.java:213)
at org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:275)
at org.apache.solr.core.CoreContainer.readProperties(CoreContainer.java:303)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:242)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3635)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4222)
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:927)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:890)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150)
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:592)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.NullPointerException
at org.apache.xpath.axes.ChildTestIterator.setRoot(ChildTestIterator.java:125)
at org.apache.xpath.axes.NodeSequence.setRoot(NodeSequence.java:213)
at org.apache.xpath.axes.LocPathIterator.execute(LocPathIterator.java:210)
at org.apache.xpath.XPath.execute(XPath.java:335)
... 33 more
--------------- linked to ------------------
javax.xml.xpath.XPathExpressionException: javax.xml.transform.TransformerException: Unknown error in XPath.
at org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:289)
at org.apache.solr.core.CoreContainer.readProperties(CoreContainer.java:303)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:242)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:83)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3635)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4222)
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:927)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:890)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1150)
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:592)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: javax.xml.transform.TransformerException: Unknown error in XPath.
at org.apache.xpath.XPath.execute(XPath.java:363)
at org.apache.xpath.jaxp.XPathImpl.eval(XPathImpl.java:213)
at org.apache.xpath.jaxp.XPathImpl.evaluate(XPathImpl.java:275)
... 31 more
Caused by: java.lang.NullPointerException
at org.apache.xpath.axes.ChildTestIterator.setRoot(ChildTestIterator.java:125)
at org.apache.xpath.axes.NodeSequence.setRoot(NodeSequence.java:213)
at org.apache.xpath.axes.LocPathIterator.execute(LocPathIterator.java:210)
at org.apache.xpath.XPath.execute(XPath.java:335)
... 33 more
Aug 4, 2010 10:44:26 AM org.apache.solr.servlet.SolrDispatchFilter init
INFO: user.dir=/opt/apache-solr-1.4.1
一旦Tomcat开始，我尝试在导航访问Solr的：http://MyIpAddress/solr/。
我有“欢迎使用Solr！”页面，这是确定的。但是当我点击“Solr Admin”链接时，出现错误消息“HTTP状态404 - 在路径中缺少核心名称”。
我补充说，如果我用start.jar单独启动solr（获得相同的异常，然后在尝试访问控制台时出现相同的错误），我会得到相同的行为。
现在，这里是我遵循的步骤我安装：
- 我下载的Solr 1.4.1 ,,并解压在/ opt文件。
- 我复制了/opt/apache-solr-1.4.1/example/solr下的/opt/apache-solr-1.4.1/dist/apache-solr-1.4.1.war文件
- 我创建了一个文件名为solr.xml，内容如下，我将它放在Tomcat的conf/Catalina/localhost文件夹中，以及/opt/apache-solr-1.4.1/example/solr中：
上下文 的docBase = “/选择/阿帕奇-的solr-1.4.1 /示例/ solr的/阿帕奇-solr的-1.4.1.war” 调试= “0” crossContext = “真”
环境名称=的 “Solr /家” 类型= “java.lang.String中” 值= “/选择/阿帕奇-的solr-1.4.1 /示例/ solr的” 重写= “真”
- 在文件箱/ setenv.sh从Tomcat，我添加的行：
JAVA_OPTS == “$ JAVA_OPTS -Dsolr.solr.home = SOLR_HOME /示例/ solr的”
- 在文件/opt/apache-solr-1.4 .1/example/solr/conf/solrconfig.xml中，我明确地设置了dataDir中的索引目录AG：
$ {solr.data.dir：/opt/apache-solr-1.4.1/example/solr/data}
然后我发起的Tomcat。
谢谢你对我的配置有什么问题的任何建议。
Sylvain