CentOS 安裝Tomcat

Tomcat 介紹

• Tomcat是Apache軟件基金會（Apache Software Foundation）的Jakarta項目中的一個核心項目，由Apache、Sun和其餘一些公司及我的共同開發而成。
• Java 程序寫的網站用tomcat+jdk來運行
• Tomcat是一箇中間件，真正起做用的，解析Java腳本的是jdk
• jdk（java development kit）是整個Java的核心，它包含了Java運行環境和一堆Java相關的工具以及Java基礎庫
• 最主流的jdk爲sun公司發佈的jdk，除此以外，其實IBM公司也有發佈JDK，CentOS上也能夠用yum安裝開源的openjdk

jdk安裝

安裝jdk1.8，並配置環境變量

[root@test-a ~]# cd /usr/local/src/
[root@test-a src]# wget https://download.oracle.com/otn-pub/java/jdk/8u191-b12/2787e4a523244c269598db4e85c51e0c/jdk-8u191-linux-x64.tar.gz?AuthParam=1544632068_03f19f823d222e93aec5356c88d9f934 -O  jdk-8u191-linux-x64.tar.gz
[root@test-a src]# tar -xvf jdk-8u191-linux-x64.tar.gz # 解壓
[root@test-a src]# mv jdk1.8.0_191 /usr/local/jdk1.8 # 重命名移動到/usr/local/下

# 配置環境變量
[root@test-a src]# vi /etc/profile
[root@test-a src]# tail /etc/profile
unset i
unset -f pathmunge
# 在profile最後添加的環境變量相關內容
LANG=en_US.UTF-8
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@test-a src]# java -version # 查看安裝結果
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)

Tomcat 安裝

# 下載安裝包
[root@test-a src]# wget http://apache.fayea.com/tomcat/tomcat-8/v8.5.35/bin/apache-tomcat-8.5.35.tar.gz
[root@test-a src]# tar -zxvf apache-tomcat-8.5.35.tar.gz # 解壓包

[root@test-a src]# mv apache-tomcat-8.5.35 /usr/local/tomcat # 重命名並移動到/usr/local/目錄下
[root@test-a src]# /usr/local/tomcat/bin/startup.sh # 啓動
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@test-a src]# ps aux|grep java # 驗證啓動是否成功
root      2653 77.6  6.5 2266228 66096 pts/0   Sl   15:48   0:09 /usr/local/jdk1.8/bin/java - java.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 -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -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      2670  0.0  0.0 112704   976 pts/0    R+   15:48   0:00 grep --color=auto java

[root@test-a src]# /usr/local/tomcat/bin/shutdown.sh # 中止服務
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@test-a src]# ps aux|grep java
root      2728  0.0  0.0 112704   972 pts/0    S+   15:49   0:00 grep --color=auto java
[root@test-a 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

# 測試訪問
[root@test-a src]# curl -x127.0.0.1:8080 abc.com -I
HTTP/1.1 200
Content-Type: text/html;charset=UTF-8
Transfer-Encoding: chunked
Date: Thu, 13 Dec 2018 07:53:40 GMT

 

Tomcat 三個端口說明:
8080 爲提供web服務的端口，常常用到的就是這個端口
8005 爲管理端口
8009 端口爲第三方服務調用的端口，好比httpd和Tomcat結合時會用到