180119 Tomcat介绍和安装jdk

Tomcat介绍

Tomcat是Apache软件基金会（Apache Software Foundation）的Jackarta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的可信，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

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-8u161-linux-x64.gz
mv jdk1.8.0_161 /usr/local/jdk1.8
vi /etc/profile 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
[root@node15 src]# tar zxf jdk-8u151-linux-x64.tar.gz 

[root@node15 src]# ls

jdk1.8.0_151                               nginx-1.12.1.tar.gz

jdk-8u151-linux-x64.tar.gz                 php-5.6.30

mysql-5.6.36-linux-glibc2.5-x86_64.tar.gz  php-5.6.30.tar.gz

nginx-1.12.1

[root@node15 src]# mv jdk1.8.0_151/ /usr/local/jdk1.8/

添加环境变量

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 

[root@node15
src]# vi /etc/profile

[root@node15 src]# source /etc/profile

[root@node15 src]# java -version

java version "1.8.0_151"

Java(TM) SE Runtime Environment (build 1.8.0_151-b12)

Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)

安装tomcat

cd /usr/local/src
wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.24/bin/apache-tomcat-8.5.24.tar.gz
tar zxvf apache-tomcat-8.5.24.tar.gz
mv apache-tomcat-8.5.24 /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

[root@node15
src]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.24/bin/apache-tomcat-8.5.24.tar.gz
[root@node15
src]# tar zxf apache-tomcat-8.5.24.tar.gz 

[root@node15 src]# mv apache-tomcat-8.5.24 /usr/local/tomcat

[root@node15 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.

[root@node15
src]# ps aux | grep java

root       1384 52.2  8.5 3804488 85064 pts/0   Sl   10:23   0:13 /usr/local/jdk1.8/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048
-Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dignore.endorsed.dirs= -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp
org.apache.catalina.startup.Bootstrap start

root       1432  0.0  0.0 112676   984 pts/0    S+   10:24   0:00 grep --color=aut
11b59
o java

关闭tomcat

[root@node15
src]# netstat -lntp | grep java

tcp6       0      0 :::8080                 :::*                    LISTEN      1501/java           

tcp6       0      0 :::8009                 :::*                    LISTEN      1501/java           

[root@node15 src]# /usr/local/tomcat/bin/shutdown.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

[root@node15 src]# netstat -lntp | grep java

[root@node15 src]# 

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

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