3

好的，我只是通过他的托管服务提供商为我的客户设置了一个专用服务器。他们在那里安装了plesk（版本9.2.1），这个专用服务器的一个警告是，如果我在控制面板之外（即使用SSH）执行任何任务，他们不保证支持该软件组件。这很好，因为我宁愿使用控制面板来做这件事，因为我所要做的就是上传一个war文件来安装servlet。

这是问题所在，在安装了最新版本的 solr (1.3.0) 后，我在 plesk 中收到了一个警告图标，它给了我一个模糊的错误，例如“应用程序的实际状态与从数据库中检索到的状态不对应。 "

这是日志条目：

Aug 17, 2009 11:16:15 PM org.apache.solr.servlet.SolrDispatchFilter init
INFO: SolrDispatchFilter.init()
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader
locateInstanceDir
INFO: Using JNDI solr.home: /usr/share/solr
Aug 17, 2009 11:16:15 PM
org.apache.solr.core.CoreContainer$Initializer initialize
INFO: looking for solr.xml: /usr/share/solr/solr.xml
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader <init>
INFO: Solr home set to '/usr/share/solr/'
Aug 17, 2009 11:16:15 PM org.apache.solr.core.SolrResourceLoader
createClassLoader
INFO: Reusing parent classloader
Aug 17, 2009 11:16:15 PM org.apache.solr.servlet.SolrDispatchFilter init
SEVERE: Could not start SOLR. Check solr/home property
java.lang.ExceptionInInitializerError
       at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:117)
       at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:69)
       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.start(ContainerBase.java:1014)
       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:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:616)
       at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Caused by: java.lang.RuntimeException: XPathFactory#newInstance()
failed to create an XPathFactory for the default object model:
http://java.sun.com/jaxp/xpath/dom with the
XPathFactoryConfigurationException:
javax.xml.xpath.XPathFactoryConfigurationException: No XPathFctory
implementation found for the object model:
http://java.sun.com/jaxp/xpath/dom
       at javax.xml.xpath.XPathFactory.newInstance(Unknown Source)
       at org.apache.solr.core.Config.<clinit>(Config.java:41)
       ... 20 more
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter SolrRequestFilter
java.lang.NoClassDefFoundError: Could not initialize class
org.apache.solr.core.SolrConfig
       at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:76)
       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.start(ContainerBase.java:1014)
       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:57)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
       at java.lang.reflect.Method.invoke(Method.java:616)
       at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext start
SEVERE: Error filterStart
Aug 17, 2009 11:16:15 PM org.apache.catalina.core.StandardContext start
SEVERE: Context [/solr] startup failed due to previous errors

solr/home 目录存在，那么为什么 solr 抱怨这个呢？

4

2 回答 2

5

好的，这就是问题所在！事实证明，tomcat 的某些发行版没有对 xalan 的引用，这就是有关 XPathFactory 的异常的来源。此错误可能会产生误导，因为它会将错误记录为 solr/home 属性未设置的问题。事实是它被设置了。10 次中有 9 次在启动 solr 时出现问题是由于未设置 solr/home 目录。

这就是我为自己修复它的方法：我进入/usr/share/tomcat5/shared/lib目录并创建了指向位于目录中的 xalan-j2.jar 文件的符号链接/usr/share/java。重新启动 Tomcat，Solr 立即启动！

其他一些提示： 编辑您要上传的文件中的 web.xml 文件，solr.war取消对其进行 jaring，进行更改，然后对其进行 rejaring。将目录设置为类似/usr/share/solr. 这样，如果日志没有显示它使用该目录作为 solr/home，那么就有问题了。另外，确保 solr/home 看起来像这样：

/usr/share/solr/
/usr/share/solr/bin
/usr/share/solr/bin/rsyncd-stop
/usr/share/solr/bin/abo
/usr/share/solr/bin/scripts-util
/usr/share/solr/bin/snappuller-disable
/usr/share/solr/bin/backupcleaner
/usr/share/solr/bin/snapcleaner
/usr/share/solr/bin/rsyncd-disable
/usr/share/solr/bin/snapinstaller
/usr/share/solr/bin/commit
/usr/share/solr/bin/snappuller-enable
/usr/share/solr/bin/snappuller
/usr/share/solr/bin/backup
/usr/share/solr/bin/rsyncd-start
/usr/share/solr/bin/abc
/usr/share/solr/bin/rsyncd-enable
/usr/share/solr/bin/optimize
/usr/share/solr/bin/snapshooter
/usr/share/solr/bin/readercycle
/usr/share/solr/conf
/usr/share/solr/conf/schema.xml
/usr/share/solr/conf/solrconfig.xml
/usr/share/solr/conf/synonyms.txt
/usr/share/solr/conf/xslt
/usr/share/solr/conf/xslt/example_atom.xsl
/usr/share/solr/conf/xslt/luke.xsl
/usr/share/solr/conf/xslt/example_rss.xsl
/usr/share/solr/conf/xslt/example.xsl
/usr/share/solr/conf/elevate.xml
/usr/share/solr/conf/scripts.conf
/usr/share/solr/conf/protwords.txt
/usr/share/solr/conf/spellings.txt
/usr/share/solr/conf/admin-extra.html
/usr/share/solr/conf/stopwords.txt
/usr/share/solr/README.txt

用户：组权限为 tomcat:tomcat。如果 solr 正确启动，将创建数据目录。

希望这会为某人节省大量时间。

于 2009-08-30T12:11:09.613 回答
-1

我很确定“solr/home 属性”不是指名为“solr/home”的目录，而是一个环境变量或包含目录路径的系统属性。
快速谷歌搜索出现了这个页面，其中属性设置为 java 系统属性：“-Dsolr.solr.home=/my/custom/solr/home/dir/”。

于 2009-08-30T12:05:53.023 回答