如何解决Solr异常：无法找到必要的SLF4j记录jars?

问题描述

As the logs say - Could not find necessary SLF4j logging jars.

You are missing the slf4j jars.

Place the slf4j jars in the $CATALINA_BASE/lib folder. For more information have a lookhere

解决方法

我在Ubuntu 12.04下安装Solr4.3时遇到大问题。首先，我安装了tomcat。我可以通过localhost：8080上的浏览器访问tomcat。在“ Tomcat Web应用程序管理器”中，我尝试通过2solr.war安装Solr 4.3
。该文件已上载部署。但是我无法开始。“失败-无法启动上下文路径/ solr处的应用程序”。

The log file (localhost.log) look like:

07.05.2013 11:05:36 org.apache.catalina.core.ApplicationContext log
INFO: HTMLManager: start: Starting web application at '/solr'
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext filterStart
SCHWERWIEGEND: Exception starting filter SolrRequestFilter
org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty,the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers,the corresponding directory should be used. For more information,see: http://wiki.apache.org/solr/SolrLogging
    at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:105)
    ... 33 more
07.05.2013 11:05:36 org.apache.catalina.core.ApplicationContext log
INFO: HTMLManager: list: Listing contexts for virtual host 'localhost'
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext filterStart
SCHWERWIEGEND: Exception starting filter SolrRequestFilter
org.apache.solr.common.SolrException: Could not find necessary SLF4j logging jars. If using Jetty,see: http://wiki.apache.org/solr/SolrLogging
    at org.apache.solr.servlet.SolrDispatchFilter.<init>(SolrDispatchFilter.java:105)
    ... 21 more

catalina.....log

07.05.2013 11:05:36 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error filterStart
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/solr] startup failed due to previous errors
07.05.2013 11:05:36 org.apache.catalina.startup.HostConfig checkResources
INFO: Reloading context [/solr]
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext stop
INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/solr] has not been started
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Error filterStart
07.05.2013 11:05:36 org.apache.catalina.core.StandardContext start
SCHWERWIEGEND: Context [/solr] startup failed due to previous errors

Can somebody help me and tell me what to do?