2018-05-14 Linux学习

Posted 2020-11-05

16.1 Tomcat介绍

Tomcat是Apache软件基金会（Apache Software Foundation）的Jakarta项目中的一个核心项目，由Apache、Sun和其他一些公司及个人共同开发而成。
java程序写的网站用tomcat+jdk来运行
tomcat是一个中间件，真正起作用的，解析java脚本的是jdk
jdk（java development kit）是整个java的核心，它包含了java运行环境和一堆java相关的工具以及java基础库。
最主流的jdk为sun公司发布的jdk，除此之外，其实IBM公司也有发布JDK，CentOS上也可以用yum安装openjdk

16.2 安装jdk

jdk版本1.6，1.7，1.8
官网下载地址 http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

下载jdk8，放到/usr/local/src/目录下
tar zxvf jdk-8u144-linux-x64.tar.gz
mv jdk1.8.0_144 /usr/local/jdk1.8

vi /etc/profile //最后面增加
JAVA_HOME=/usr/local/jdk1.8/
JAVA_BIN=/usr/local/jdk1.8/bin
JRE_HOME=/usr/local/jdk1.8/jre
PATH=$PATH:/usr/local/jdk1.8/bin:/usr/local/jdk1.8/jre/bin
CLASSPATH=/usr/local/jdk1.8/jre/lib:/usr/local/jdk1.8/lib:/usr/local/jdk1.8/jre/lib/charsets.jar

source /etc/profile
java -version

操作过程

[[email protected] src]# cd /usr/local/src/
[[email protected] src]# wget wget http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jdk-8u161-linux-x64.tar.gz?AuthParam=1523420448_20afcbdad3898c967abd73288200d41d

[[email protected] src]# tar zxvf jdk-8u161-linux-x64.tar.gz
[[email protected] src]# du -sh jdk1.8.0_161/
371M    jdk1.8.0_161/
[[email protected] src]# mv jdk1.8.0_161/ /usr/local/jdk1.8

[[email protected] src]# vim /etc/profile
添加到最后
JAVA_HOME=/usr/local/jdk1.8/
JAVA_BIN=/usr/local/jdk1.8/bin
JRE_HOME=/usr/local/jdk1.8/jre
PATH=$PATH:/usr/local/jdk1.8/bin:/usr/local/jdk1.8/jre/bin
CLASSPATH=/usr/local/jdk1.8/jre/lib:/usr/local/jdk1.8/lib:/usr/local/jdk1.8/jre/lib/charsets.jar

[[email protected] src]# source /etc/profile
[[email protected] src]# java -version
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

系统如果有安装openjdk，不能卸载
[[email protected] src]# rpm -qa |grep openjdk
[[email protected] src]# yum list|grep openjdk

16.3 安装Tomcat

cd /usr/local/src
wget http://apache.fayea.com/tomcat/tomcat-8/v8.5.20/bin/apache-tomcat-8.5.20.tar.gz
tar zxvf apache-tomcat-8.5.20.tar.gz

mv apache-tomcat-8.5.20 /usr/local/tomcat
/usr/local/tomcat/bin/startup.sh
ps aux|grep tomcat
netstat -lntp |grep java

三个端口8080为提供web服务的端口，8005为管理端口，8009端口为第三方服务调用的端口，比如httpd和Tomcat结合时会用到

操作过程

[[email protected] src]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.7/bin/apache-tomcat-9.0.7.tar.gz
[[email protected] src]# ll apache-tomcat-9.0.7.tar.gz 
-rw-r--r--. 1 root root 9517889 4月   4 04:19 apache-tomcat-9.0.7.tar.gz
[[email protected] src]# tar zxvf apache-tomcat-9.0.7.tar.gz 

[[email protected] src]# mv apache-tomcat-9.0.7 /usr/local/tomcat

[[email protected] src]# /usr/local/tomcat/bin/startup.sh 
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/local/jdk1.8
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.

[[email protected] src]# ps aux|grep tomcat

[[email protected] src]# netstat -lntp|grep java
tcp6       0      0 :::8009                 :::*                    LISTEN      11484/java          
tcp6       0      0 :::8080                 :::*                    LISTEN      11484/java          
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      11484/java

[[email protected] src]# systemctl stop firewalld.service 
[[email protected] src]# iptables -nvL
浏览器打开 http://192.168.106.160:8080/  显示 Apache Tomcat/9.0.7 正常