Tomcat详解篇+jdk环境安装

##yum方式安装 
yum -y install java-1.8.0-openjdk.x86_64
##编译安装
官网下载tar包
tar xf jdk-8u201-linux-x64.tar.gz -C /usr/local/
cd /usr/local/
ln -s jdk1.8.0_201/ java
## 添加环境变量
[root@tomcat_web ~]# vim /etc/profile 
export JAVA_HOME=/usr/local/java
export JRE_HOME=/usr/local/java/jre
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
## 加载修改的变量
source /etc/profile 
## 查看是否安装成功
java -version

wget https://mirrors.bfsu.edu.cn/apache/tomcat/tomcat-8/v8.5.65/bin/apache-tomcat-8.5.65.tar.gz
tar -xvf apache-tomcat-8.5.65.tar.gz -C /usr/local/
cd /usr/local/
ln -s apache-tomcat-8.5.65/ tomcat
## 添加环境变量-替换上面的jdk修改内容
vim /etc/profile
export JAVA_HOME=/usr/local/java
export TOMCAT_HOME=/usr/local/tomcat
export JRE_HOME=/usr/local/java/jre
export PATH=$TOMCAT_HOME/bin:$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
## 授权
chown -R root.root /usr/local/jdk/ /usr/local/tomcat/
## 检查是否安装完成
[root@localhost tomcat]# /usr/local/tomcat/bin/version.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/java/jre
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Using CATALINA_OPTS:
Server version: Apache Tomcat/8.5.65
Server built:   Mar 30 2021 12:28:40 UTC
Server number:  8.5.65.0
OS Name:        Linux
OS Version:     3.10.0-957.el7.x86_64
Architecture:   amd64
JVM Version:    1.8.0_211-b12
JVM Vendor:     Oracle Corporation
##
占用端口
8080 服务端口
8005 重启端口

cd /usr/local/tomcat/
tree -L 1
.
├── bin              #存放tomcat管理脚本
├── conf             # tomcat 配置文件存放目录
├── lib              # web应用调用的jar包存放路径
├── LICENSE
├── logs             # tomcat 日志存放目录，catalina.out 为主要输出日志
├── NOTICE
├── RELEASE-NOTES
├── RUNNING.txt
├── temp             # 存放临时文件
├── webapps          # web程序存放目录
└── work             # 存放编译产生的.java 与 .class文件

cd /usr/local/tomcat/webapps/
tree -L 1
.
├── docs            # tomcat 帮助文档
├── examples        # web应用实例
├── host-manager    # 主机管理
├── manager         # 管理
└── ROOT            # 默认站点根目录

cd /usr/local/tomcat/conf
tree -L 1
.
├── Catalina
├── catalina.policy
├── catalina.properties
├── context.xml
├── logging.properties
├── logs
├── server.xml           # tomcat 主配置文件
├── server.xml.bak
├── server.xml.bak2
├── tomcat-users.xml     # tomcat 管理用户配置文件
├── tomcat-users.xsd
└── web.xml

# 启动程序/usr/local/tomcat/bin/startup.sh
# 关闭程序/usr/local/tomcat/bin/shutdown.sh

server.xml
<?xml version='1.0' encoding='utf-8'?>
<!--
<Server>元素代表整个容器,是Tomcat实例的顶层元素.由org.apache.catalina.Server接口来定义.它包含一个<Service>元素.并且它不能做为任何元素的子元素.
    port指定Tomcat监听shutdown命令端口.终止服务器运行时,必须在Tomcat服务器所在的机器上发出shutdown命令.该属性是必须的.
    shutdown指定终止Tomcat服务器运行时,发给Tomcat服务器的shutdown监听端口的字符串.该属性必须设置
-->
<Server port="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
  <GlobalNamingResources>
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>
  <!--service服务组件-->
  <Service name="Catalina">
    <!-- Connector主要参数说明（见下表） -->
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
    <!--engine,核心容器组件,catalina引擎,负责通过connector接收用户请求,并处理请求,将请求转至对应的虚拟主机host
        defaultHost指定缺省的处理请求的主机名，它至少与其中的一个host元素的name属性值是一样的
    -->
    <Engine name="Catalina" defaultHost="localhost">
      <!--Realm表示存放用户名，密码及role的数据库-->
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
      <!-- 详情常见下表（host参数详解）-->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <!-- 详情常见下表（Context参数说明 ）-->
        <Context path="" docBase="" debug=""/>
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
      </Host>
    </Engine>
  </Service>
</Server>

sed -i 's#8005#8011#;s#8080#8081#' tomcat/conf/server.xml