Centos7系统安装JDK8+Tomcat8

本文以滴滴云为例，向广大用户和有兴趣的朋友介绍如何在Centos7系统安装JDK8+Tomcat8。

到Oracle官网下载JDK8 64位

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

解压文件

切换到root

[dc2-user@didiyun ~]$ sudo su
[root@didiyun dc2-user]#
[root@didiyun dc2-user]# tar zxf jdk-8u171-linux-x64.tar.gz
[root@didiyun dc2-user]# cd jdk1.8.0_171/
[root@didiyun jdk1.8.0_171]#

[dc2-user@didiyun ~]$ sudo su

[root@didiyun dc2-user]#

[root@didiyun dc2-user]# tar zxf jdk-8u171-linux-x64.tar.gz

[root@didiyun dc2-user]# cd jdk1.8.0_171/

[root@didiyun jdk1.8.0_171]#

记录下JDK的目录

[root@didiyun jdk1.8.0_171]# pwd
/home/dc2-user/jdk1.8.0_171

[root@didiyun jdk1.8.0_171]# pwd

/home/dc2-user/jdk1.8.0_171

设置环境变量

[root@didiyun dc2-user]# vi /etc/bashrc
export JAVA_HOME=/home/dc2-user/jdk1.8.0_171
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

[root@didiyun dc2-user]# vi /etc/bashrc

export JAVA_HOME=/home/dc2-user/jdk1.8.0_171

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

保存退出。

[root@didiyun dc2-user]# source /etc/bashrc
[root@didiyun dc2-user]# java -version
java version "1.8.0_171"
Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)

[root@didiyun dc2-user]# source /etc/bashrc

[root@didiyun dc2-user]# java -version

java version "1.8.0_171"

Java(TM) SE Runtime Environment (build 1.8.0_171-b11)

Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)

JDK安装成功。

安装Tomcat 8

下载Tomcat 8

[root@didiyun dc2-user]# wget http://mirrors.hust.edu.cn/apache/tomcat/tomcat-8/v8.5.32/bin/apache-tomcat-8.5.32.tar.gz

解压

[root@didiyun dc2-user]# tar zxf apache-tomcat-8.5.32.tar.gz
[root@didiyun dc2-user]# cd apache-tomcat-8.5.32/bin

[root@didiyun dc2-user]# tar zxf apache-tomcat-8.5.32.tar.gz

[root@didiyun dc2-user]# cd apache-tomcat-8.5.32/bin

启动Tomcat

[root@didiyun bin]# ./startup.sh 
Using CATALINA_BASE:   /home/dc2-user/apache-tomcat-8.5.32
Using CATALINA_HOME:   /home/dc2-user/apache-tomcat-8.5.32
Using CATALINA_TMPDIR: /home/dc2-user/apache-tomcat-8.5.32/temp
Using JRE_HOME:        /usr/local/jdk
Using CLASSPATH:       /home/dc2-user/apache-tomcat-8.5.32/bin/bootstrap.jar:/home/dc2-user/apache-tomcat-8.5.32/bin/tomcat-juli.jar
Tomcat started.

[root@didiyun bin]# ./startup.sh

Using CATALINA_BASE: /home/dc2-user/apache-tomcat-8.5.32

Using CATALINA_HOME: /home/dc2-user/apache-tomcat-8.5.32

Using CATALINA_TMPDIR: /home/dc2-user/apache-tomcat-8.5.32/temp

Using JRE_HOME: /usr/local/jdk

Using CLASSPATH: /home/dc2-user/apache-tomcat-8.5.32/bin/bootstrap.jar:/home/dc2-user/apache-tomcat-8.5.32/bin/tomcat-juli.jar

Tomcat started.

在防火墙组中打开8080端口

关于防火墙组的使用，请参考防火墙组使用教程。

访问Tomcat，http://IP:8080