CentOS安装jdk和tomcat

1.查看是否已经安装

java -version

2.卸载自带的openjdk

dnf remove java-1.7.0-openjdk

3.下载jdk安装包

wget -c http://111.1.50.14/files/7194000006F691AA/download.oracle.com/otn-pub/java/jdk/8u181-b13/96a7b8442fe848ef90c96a2fad6ed6d1/jdk-8u181-linux-x64.rpm

4.安装

rpm -ivh jdk-8u181-linux-x64.rpm

5.检查是否安装成功

java -version
输出一下：

java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)

6.下载tomcat

wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-7/v7.0.91/bin/apache-tomcat-7.0.91.tar.gz

7.解压

tar zxf apache-tomcat-7.0.91.tar.gz -C /root/xxxx/

8.创建环境变量

vim /root/.bash_profile

添加以下内容：

export CATALINA_HOME=/root/yuanweipeng/apache-tomcat-7.0.91
export PATH=$CATALINA_HOME/bin:$PATH:$HOME/bin

9.查看是否配置成功

catalina.sh -version
输出一下：

commands:
debug Start Catalina in a debugger
debug -security Debug Catalina with a security manager
jpda start Start Catalina under JPDA debugger
run Start Catalina in the current window
run -security Start in the current window with security manager
start Start Catalina in a separate window
start -security Start in a separate window with security manager
stop Stop Catalina, waiting up to 5 seconds for the process to end
stop n Stop Catalina, waiting up to n seconds for the process to end
stop -force Stop Catalina, wait up to 5 seconds and then use kill -KILL if still running
stop n -force Stop Catalina, wait up to n seconds and then use kill -KILL if still running
configtest Run a basic syntax check on server.xml - check exit code for result
version What version of tomcat are you running?

10.启动tomcat

catalina.sh start
输出：

Tomcat started.

11.防火墙添加开放8080端口号

firewall-cmd --zone=public --add-port=8080/tcp --permanent
permanent参数代表重启后有效

12.访问服务

在本机浏览器中输入
ip:8080