我在启动tomcat时就出现这两个warn？
2007-7-9   13:16:29   org.apache.catalina.core.AprLifecycleListener   lifecycleEvent
信息:   The   Apache   Tomcat   Native   library   which   allows   optimal   performance   in   production   environments   was   not   found   on   the   java.library.path:   D:\Program   Files\Java\jre1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\Program   Files\Java\jdk1.5.0_06\BIN
2007-7-9   13:16:29   org.apache.coyote.http11.Http11BaseProtocol   init
信息:   Initializing   Coyote   HTTP/1.1   on   http-8080
2007-7-9   13:16:29   org.apache.catalina.startup.Catalina   load
信息:   Initialization   processed   in   1453   ms
2007-7-9   13:16:29   org.apache.catalina.core.StandardService   start
信息:   Starting   service   Catalina
2007-7-9   13:16:29   org.apache.catalina.core.StandardEngine   start
信息:   Starting   Servlet   Engine:   Apache   Tomcat/5.5.17
2007-7-9   13:16:29   org.apache.catalina.core.StandardHost   start
信息:   XML   validation   disabled
2007-7-9   13:16:29   org.apache.catalina.loader.WebappClassLoader   validateJarFile
信息:   validateJarFile(E:\my_Eclipse\snmpmgrweb_myfaces\WEB-INF\lib\servlet-api.jar)   -   jar   not   loaded.   See   Servlet   Spec   2.3,   section   9.7.2.   Offending   class:   javax/servlet/Servlet.class
log4j:WARN   No   appenders   could   be   found   for   logger   (org.apache.catalina.startup.TldConfig).
log4j:WARN   Please   initialize   the   log4j   system   properly.
  [DEBUG]   The   REALPATH   of   this   web   application   is   'E:\my_Eclipse\snmpmgrweb_myfaces '.
问题一：
The   Apache   Tomcat   Native   library   which   allows   optimal   performance   in   production   environments   was   not   found   on   the   java.library.path:   D:\Program   Files\Java\jre1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;D:\Program   Files\Java\jdk1.5.0_06\BIN
它怎么说没找到环境呢，重要吗？？
问题二：
validateJarFile(E:\my_Eclipse\snmpmgrweb_myfaces\WEB-INF\lib\servlet-api.jar)   -   jar   not   loaded.   See   Servlet   Spec   2.3,   section   9.7.2.   Offending   class:   javax/servlet/Servlet.class
log4j:WARN   No   appenders   could   be   found   for   logger   (org.apache.catalina.startup.TldConfig).
log4j:WARN   Please   initialize   the   log4j   system   properly.
  [DEBUG]   The   REALPATH   of   this   web   application   is   'E:\my_Eclipse\snmpmgrweb_myfaces '.
这两个Warn怎么产生的呢？？
我现在只知道是不是我的log4jconf.cfg文件写错了，以下是我的cfg文件内容：
log4j.rootLogger=info,   stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

#   Pattern   to   output   the   caller 's   file   name   and   line   number.
log4j.appender.stdout.layout.ConversionPattern=%5p   [%t]   (%F:%L)   -   %m%n

log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=./logs/snmpMgrLog

log4j.appender.R2=org.apache.log4j.DailyRollingFileAppender