centos安装JDK与Tomcat

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 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.

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。