Detailed steps to install JDK and Tomcat in Linux environment

1. Install JDK

Note: Installing tomcat requires configuring jdk first

One is yum installation

One is manual installation (personally recommended manual installation)

Manual Installation

1. Go to Oracle's official website to download the jdk version you need to install. I use jdk-8u171-linux-x64.tar.gz here

2. Put the compressed package in the /usr/local/jdk directory. The jdk directory needs to be created manually. It can also be called java. You can give it any name (see the name to know the meaning), and then unzip the compressed package.

Enter the following command: tar zxvf jdk-8u172-linux-x64.tar.gz

After successful decompression

Go to the profile file under etc

Add the following information at the end of the file:

export JAVA_HOME=/usr/local/jdk/jdk1.8.0_172
export CLASSPATH=$:CLASSPATH:$JAVA_HOME/lib/
export PATH=$PATH:$JAVA_HOME/bin

To check whether JDK is installed successfully, enter the command java -version.

2. Tomcat

Install using yum

yum install tomcat

Check Tomcat status

systemctl status tomcat

Start Tomcat

systemctl start tomcat.service

Install the Tomcat page plugin

yum install tomcat-webapps tomcat-admin-webapps

Increase the port number

firewall-cmd --zone=public --add-port=8080/tcp --permanent

Firewall

systemctl restart firewalld

It would be nice if this interface came out

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