使用Tomcat进行Solr日志记录：空日志文件

我在Ubuntu12机器上用Tomcat6运行Solr4.2。 我想为Solr设置日志记录，因为我还有一些其他问题，我无法解决。我希望在日志文件中，我能得到我的应用程序发送到Solr的所有URL

我按照这个指南在它自己的文件中启用Solr日志记录。我的问题是，文件已创建，但为空：

-rw-r--r--  1 tomcat6 tomcat6     0 Aug 24 11:24 solr.2013-08-24.log

对于solr设置，我遵循以下指南：

那么，你知道solr为什么不登录这些文件吗？我正在通过一个名为sunspot with Rails 3的DSL使用Solr。因为我对sunspot有一些问题，所以我想看看Solr日志，真正的URL是什么（而不是sunspot DSL告诉我的；）

编辑

我在catalina.out中发现了一些错误：

INFO: Pausing Coyote HTTP/1.1 on http-8080
Aug 24, 2013 11:31:36 AM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Aug 24, 2013 11:31:36 AM org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap
SEVERE: The web application [/solr] created a ThreadLocal with key of type [org.apache.solr.schema.DateField.ThreadLocalDateFormat] (value [org.apache.solr.schema.DateField$ThreadLocalDateFormat@609e7d46]) and a value of type [org.apache.solr.schema.DateField.ISO8601CanonicalDateFormat] (value [org.apache.solr.schema.DateField$ISO8601CanonicalDateFormat@6b2ed43a]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
Aug 24, 2013 11:31:37 AM org.apache.coyote.http11.Http11Protocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat6/server/classes], exists: [false], isDirectory: [false], canRead: [false]
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat6/server], exists: [false], isDirectory: [false], canRead: [false]
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat6/shared/classes], exists: [false], isDirectory: [false], canRead: [false]
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.ClassLoaderFactory validateFile
WARNING: Problem with directory [/usr/share/tomcat6/shared], exists: [false], isDirectory: [false], canRead: [false]
Aug 24, 2013 11:31:38 AM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 299 ms
Aug 24, 2013 11:31:38 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Aug 24, 2013 11:31:38 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.35
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor ROOT.xml
Aug 24, 2013 11:31:38 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor solr.xml
log4j:WARN No appenders could be found for logger (org.apache.solr.servlet.SolrDispatchFilter).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Aug 24, 2013 11:31:40 AM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Aug 24, 2013 11:31:40 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1677 ms

但是如何正确初始化log4j呢？在

/var/lib/tomcat6/shared

内部有以下jar：

drwxr-xr-x 3 tomcat6 tomcat6   4096 Aug 12 10:18 .
drwxr-xr-x 6 root    root      4096 Aug 11 14:27 ..
drwxr-xr-x 2 tomcat6 tomcat6   4096 May 23 16:52 classes
-rw-r--r-- 1 tomcat6 tomcat6  17289 Aug 11 14:35 jcl-over-slf4j-1.6.6.jar
-rw-r--r-- 1 tomcat6 tomcat6   4955 Aug 11 14:35 jul-to-slf4j-1.6.6.jar
-rw-r--r-- 1 tomcat6 tomcat6 481535 Aug 11 14:35 log4j-1.2.16.jar
-rw-r--r-- 1 tomcat6 tomcat6  26176 Aug 11 14:35 slf4j-api-1.6.6.jar
-rw-r--r-- 1 tomcat6 tomcat6   9711 Aug 11 14:35 slf4j-log4j12-1.6.6.jar

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您还可以向您显示tomcat日志中的日志文件配置错误，这些错误表明日志记录失败？Solr日志文件是否未在$tomcat_HOME/bin目录中找到？我发现了一些错误，并添加了更多信息