Quick Guide: Install Tomcat, Jenkins, and JDK on macOS

Environment Preparation

Before beginning, ensure the following components are ready:

Tomcat

Jenkins (to be deployed inside Tomcat)

JDK

SDK (if needed for your projects)

1. Install and Start Tomcat

Download Tomcat from the official site: http://tomcat.apache.org/download-70.cgi Extract the archive and place the entire apache-tomcat-7.0.77 folder under /usr/local on macOS.

Configure the PATH environment variable by editing .bash_profile: export PATH=${PATH}:/usr/local/apache-tomcat-7.0.77/bin Start Tomcat:

Give execution permission to the startup script: chmod 777 catalina.sh Run the startup command: sh startup.sh If successful, the console will display:

Tomcat started.
Using CATALINA_BASE:   /usr/local/apache-tomcat-7.0.77
Using CATALINA_HOME:   /usr/local/apache-tomcat-7.0.77
Using CATALINA_TMPDIR: /usr/local/apache-tomcat-7.0.77/temp
Using JRE_HOME:        /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home
Using CLASSPATH:       /usr/local/apache-tomcat-7.0.77/bin/bootstrap.jar:/usr/local/apache-tomcat-7.0.77/bin/tomcat-juli.jar

Open a browser and navigate to http://localhost:8080/. If port 8080 is occupied (e.g., by Jenkins), edit conf/server.xml and change the Connector port, for example to 8088:

<Connector port="8088" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" />

Tomcat can be stopped with:

sh ./shutdown.sh

2. Deploy Jenkins Inside Tomcat

Download the latest Jenkins WAR file: http://mirrors.jenkins-ci.org/war/latest/jenkins.war Copy jenkins.war into Tomcat's webapps directory and restart Tomcat. Access Jenkins at: http://127.0.0.1:8088/Jenkins Use the generated username and password (displayed in the console) to log in.

3. Install JDK and Configure Environment Variables

Follow the JDK installation guide (e.g., http://www.cnblogs.com/quickcodes/p/5127101.html) to install JDK 1.8.

After installation, set the following variables in .bash_profile:

export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home
export PATH=$JAVA_HOME/bin:$PATH:.
export CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.

Reload the profile or restart the terminal to apply the changes.