一：安装JDK
官方网站下载
将压缩包拷贝到/user/java目录下
解压
tar zxvf jdk #下载的JDK压缩包名称
配置环境变量
vi /etc/profile
添加以下内容
# set java environment
export JAVA_HOME=/usr/java/jdk-10.0.1
export CLASSPATH=.:$JAVA_HOME$/lib
export PATH=$JAVA_HOME/bin:$PATH
至此，JDK的配置配置完成
验证JDK是否正确安装，输入以下命令
java -version
java version "10.0.1" 2018-04-17
Java(TM) SE Runtime Environment 18.3 (build 10.0.1+10)
Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10.0.1+10, mixed mode)
出现以上的提示说明JDK安装成功
二：安装tomcat
官方网站下载tomcat压缩包
解压压缩包
tar zxvf tomcat #下载的JDK压缩包名称
vi /etc/profile #文件中加入以下配置
# tomcat config
export CATALINA_HOME=/usr/local/tomcat9/apache-tomcat-9.0.7
export PATH=$CATALINA_HOME$/bin:$PATH
添加tomcat为服务并开机自启动
vi /etc/rc.d/init.d/tomcat
输入以下内容
#!/bin/bash
#
# kenny [email protected]
# /etc/rc.d/init.d/tomcat
# init script for tomcat precesses
#
# processname: tomcat
# description: tomcat is a j2se server
# chkconfig: 2345 86 16
# description: Start up the Tomcat servlet engine.
export JAVA_HOME=/usr/java/jdk-10.0.1
export CATALINA_HOME=/usr/local/tomcat9/apache-tomcat-9.0.7
if [ -f /etc/init.d/functions ]; then
. /etc/init.d/functions
elif [ -f /etc/rc.d/init.d/functions ]; then
. /etc/rc.d/init.d/functions
else
echo -e "/atomcat: unable to locate functions lib. Cannot continue."
exit -1
fi
RETVAL=$?
CATALINA_HOME="/usr/local/tomcat9/apache-tomcat-9.0.7"
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
输入以下命令
service tomcat start
service tomcat stop
至此，tomcat安装成功。