以下使用 linux centos系統
1、下載jdk-8u111-linux-x64.tar.gz
2、解壓該文件,將解壓後的文件復制到 /usr/local/jdk1.7 目錄下。如圖:

在這裡 jdk1.7 目錄就是我解壓後的文件內容。
3、配置環境變量
進入etc目錄下編輯profile文件
文件內容:

# /etc/profile
# System wide environment and startup programs, for login setup
# Functions and aliases go in /etc/bashrc
# It's NOT a good idea to change this file unless you know what you
# are doing. It's much better to create a custom.sh shell script in
# /etc/profile.d/ to make custom changes to your environment, as this
# will prevent the need for merging in future updates.
pathmunge () {
case ":${PATH}:" in
*:"$1":*)
;;
*)
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
esac
}
if [ -x /usr/bin/id ]; then
if [ -z "$EUID" ]; then
# ksh workaround
EUID=`id -u`
UID=`id -ru`
fi
USER="`id -un`"
LOGNAME=$USER
MAIL="/var/spool/mail/$USER"
fi
# Path manipulation
if [ "$EUID" = "0" ]; then
pathmunge /usr/sbin
pathmunge /usr/local/sbin
else
pathmunge /usr/local/sbin after
pathmunge /usr/sbin after
fi
HOSTNAME=`/usr/bin/hostname 2>/dev/null`
HISTSIZE=1000
if [ "$HISTCONTROL" = "ignorespace" ] ; then
export HISTCONTROL=ignoreboth
else
export HISTCONTROL=ignoredups
fi
export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL
# By default, we want umask to get set. This sets it for login shell
# Current threshold for system reserved uid/gids is 200
# You could check uidgid reservation validity in
# /usr/share/doc/setup-*/uidgid file
if [ $UID -gt 199 ] && [ "`id -gn`" = "`id -un`" ]; then
umask 002
else
umask 022
fi
for i in /etc/profile.d/*.sh ; do
if [ -r "$i" ]; then
if [ "${-#*i}" != "$-" ]; then
. "$i"
else
. "$i" >/dev/null
fi
fi
done
unset i
unset -f pathmunge
View Code
添加關於JDK環境變量的配置:在該文件末尾添加下面代碼
JAVA_HOME="/usr/local/jdk1.7" CLASS_PATH="$JAVA_HOME/lib:$JAVA_HOME/jre/lib" PATH=".:$PATH:$JAVA_HOME/bin"
export JAVA_HOME
4、測試是否安裝成功
a、讓更改後的文件立即生效 ; 執行命令: source /etc/profile
b、輸入命令 java -version 結果如圖:

1、下載tomcat apache-tomcat-7.0.70.tar.gz
2、將解壓後的文件移動到 /usr/local/tomcat1.7 如圖:

3、配置環境變量
在/etc/profile 文件末尾添加如下內容
CATALINA_HOME="/usr/local/tomcat1.7" export CATALINA_HOME
4、測試tomcat是否安裝成功
a、讓更改後的文件立即生效 ; 執行命令: source /etc/profile
b、進入tomcat bin目錄下執行命令 ./startup.sh
c、訪問 127.0.0.1:8080 看是否出現tomcat主頁
一般情況下JDK與tomcat的環境變量我們會寫在一起 在/etc/profile 文件末尾添加如下內容
JAVA_HOME="/usr/local/jdk1.7" CLASS_PATH="$JAVA_HOME/lib:$JAVA_HOME/jre/lib" PATH=".:$PATH:$JAVA_HOME/bin" CATALINA_HOME="/usr/local/tomcat1.7" export JAVA_HOME CATALINA_HOME
Centos 7使用firewalld代替了原來的iptables。下面記錄如何使用firewalld開放Linux端口:
1、開啟端口 執行命令:firewall-cmd --zone=public --add-port=80/tcp --permanent 命令含義: --zone #作用域 --add-port=80/tcp #添加端口,格式為:端口/通訊協議 --permanent #永久生效,沒有此參數重啟後失效 2、重啟防火牆 命令:firewall-cmd --reload
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