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我正在爲solr應用程序運行Tomcat服務器。我重新啓動了服務器，並在我的catalina.out中觀察到以下錯誤。以下Tomcat錯誤的原因是什麼：
Exception configuring digester to permit java encoding names in XML files. Only IANA encoding names will be supported.
這個錯誤是什麼意思，怎麼解決？我根本不知道Java，所以任何幫助，將不勝感激。這是CentOs上的Tomcat6。
編輯日誌文件：
Jan 1, 2013 10:14:44 a.m. org.apache.catalina.users.MemoryUserDatabase open
WARNING: Exception configuring digester to permit java encoding names in XML files. Only IANA encoding names will be supported.
org.xml.sax.SAXNotSupportedException: http://apache.org/xml/features/allow-java-encodings
at gnu.xml.stream.SAXParserFactory.setFeature(libgcj.so.10)
at org.apache.tomcat.util.digester.Digester.setFeature(Digester.java:556)
at org.apache.catalina.users.MemoryUserDatabase.open(MemoryUserDatabase.java:391)
............
Jan 1, 2013 10:14:44 a.m. org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Jan 1, 2013 10:14:44 a.m. org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.24
Jan 1, 2013 10:14:44 a.m. org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor manager.xml
Jan 1, 2013 10:14:45 a.m. org.apache.catalina.startup.TldConfig lifecycleEvent
SEVERE: Error processing TLD files for context path /manager
java.lang.IllegalArgumentException: URI "file:./" is not hierarchical
at java.io.File.<init>(libgcj.so.10)
at org.apache.catalina.startup.TldConfig.getJarPaths(TldConfig.java:687)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:281)
...........
Jan 1, 2013 10:14:45 a.m. org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor solr.xml
Jan 1, 2013 10:14:45 a.m. org.apache.catalina.startup.TldConfig lifecycleEvent
SEVERE: Error processing TLD files for context path /solr
java.lang.IllegalArgumentException: URI "file:./" is not hierarchical
at java.io.File.<init>(libgcj.so.10)
at org.apache.catalina.startup.TldConfig.getJarPaths(TldConfig.java:687)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:281)
at org.apache.catalina.startup.TldConfig.lifecycleEvent(TldConfig.java:739)
at
.........
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrResourceLoader locateSolrHome
INFO: Using JNDI solr.home: /var/lib/tomcat6/my/solr/
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrResourceLoader <init>
INFO: new SolrResourceLoader for deduced Solr Home: '/var/lib/tomcat6/my/solr/'
Jan 1, 2013 10:14:45 a.m. org.apache.solr.servlet.SolrDispatchFilter init
INFO: SolrDispatchFilter.init()
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrResourceLoader locateSolrHome
INFO: Using JNDI solr.home: /var/lib/tomcat6/my/solr/
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.CoreContainer$Initializer initialize
INFO: looking for solr.xml: /var/lib/tomcat6/my/solr/solr.xml
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.CoreContainer load
INFO: Loading CoreContainer using Solr Home: '/var/lib/tomcat6/my/solr/'
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrResourceLoader <init>
INFO: new SolrResourceLoader for directory: '/var/lib/tomcat6/my/solr/'
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.CoreContainer create
INFO: Creating SolrCore '' using instanceDir: /var/lib/tomcat6/my/solr/.
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrResourceLoader <init>
INFO: new SolrResourceLoader for directory: '/var/lib/tomcat6/my/solr/./'
Jan 1, 2013 10:14:45 a.m. org.apache.solr.core.SolrConfig initLibs
INFO: Adding specified lib dirs to ClassLoader
Jan 1, 2013 10:14:45 a.m. org.apache.solr.common.SolrException log
SEVERE: Error in xpath:javax.xml.xpath.XPathExpressionException: multiple nodes in node-set
我用這對Solr的