ubuntu24.04 LTS配置java+maven+tomcat

1、对java+maven+tomcat三个安装包解压

root@server:/opt# ls
apache-maven-3.5.4  apache-maven-3.5.4-bin.tar.gz  apache-tomcat-9.0.71  apache-tomcat-9.0.71.tar.gz  jdk1.8.0_211  jdk-8u211-linux-x64.tar.gz

2、环境变量配置

root@server:/opt# vi /etc/profile

#java
export JAVA_HOME=/opt/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:${PATH}
#maven
export MAVEN_HOME=/opt/apache-maven-3.5.4
export PATH=$MAVEN_HOME/bin:$PATH
#tomcat
export TOMCAT_HOME=/opt/apache-tomcat-9.0.71
export CATALINA_HOME=/opt/apache-tomcat-9.0.71

root@server:/opt# source /etc/profile
root@server:/opt# java -version
root@server:/opt# mvn -v

3、对tomcat的启动和关闭脚本的JAVA_HOME和JRE_HOME设置

vi /opt/apache-tomcat-9.0.71/bin/setclasspath.sh
#在脚本的最上面添加
export JAVA_HOME=/opt/jdk1.8.0_211
export JRE_HOME=${JAVA_HOME}/jre

4、设置tomcat开机自启

#将tomcat目录下/bin中的catalina.sh拷贝到/etc/init.d下，并重命名为tomcat
cp /opt/apache-tomcat-9.0.71/bin/catalina.sh /etc/init.d/ 
mv /etc/init.d/catalina.sh /etc/init.d/tomcat

vi /etc/init.d/tomcat 
#在文件开始位置加入以下内容
CATALINA_HOME=/opt/apache-tomcat-9.0.71
JAVA_HOME=/opt/jdk1.8.0_211

#添加到开机自动服务
update-rc.d -f tomcat defaults