方法一：

linux 下tomcat开机自启动
修改Tomcat/bin/startup.sh 为:
export JAVA_HOME=/usr/java/j2sdk1.4.2_08
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export PATH=$PATH:$JAVA_HOME/bin
export CATALINA_HOME=/usr/local/tomcat
/usr/local/tomcat/bin/catalina.sh start

在/etc/rc.d/rc.local中加入:
/usr/local/tomcat/bin/startup.sh

方法二：

1、把下面的代码保存为tomcat文件，并让它成为可执行文件 chmod 755 tomcat.
#!/bin/bash
#
# kenny kenny.zhou@tom.com
# /etc/rc.d/init.d/tomcat
# init script for tomcat precesses
#
# processname: tomcat
# description: tomcat is a j2se server
# chkconfig: 2345 86 16
# description: Start up the Tomcat servlet engine.

if [ -f /etc/init.d/functions ]; then
. /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ]; then
. /etc/rc.d/init.d/functions
else
echo -e "/atomcat: unable to locate functions lib. Cannot continue."
exit -1
fi

RETVAL=$?
CATALINA_HOME="/usr/local/tomcat"

case "$1" in
start)
if [ -f $CATALINA_HOME/bin/startup.sh ];
then
echo $"Starting Tomcat"
$CATALINA_HOME/bin/startup.sh
fi
;;
stop)
if [ -f $CATALINA_HOME/bin/shutdown.sh ];
then
echo $"Stopping Tomcat"
$CATALINA_HOME/bin/shutdown.sh
fi
;;
*)
echo $"Usage: $0 {start|stop}"
exit 1
;;
esac

exit $RETVAL

2、将tomcat文件拷贝到/etc/init.d/下，并运行：chkconfig --add tomcat

3、在tomcat/bin/catalina.sh文件中加入以下语句：
export JAVA_HOME=/YOURPATH/tomcat/jdk
export CATALINA_HOME=/YOURPATH/tomcat
export CATALINA_BASE=/YOURPATH/tomcat
export CATALINA_TMPDIR=/YOURPATH/tomcat/temp

启动tomcat： service tomcat start
停止tomcat: service tomcat stop　　　

Linux下设置开机自启动Tomcat