Tomcat的基础原理实战讲解

作者: 古巷挂青灯 | 来源:发表于2020-02-25 12:25 被阅读0次

Tomcat的基础原理实战讲解
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学习压缩包自取
链接：https://pan.baidu.com/s/1-DXK_Jxk63Qj25KfVmMQ3Q
提取码：o644

Tomcat作用类似于PHP，运行Java代码，Java代码容器
官网：tomcat.apache.org

网站架构
LNMT(tomcat  java)
           tomcat
           resin
           weblogic(配合着Oracle数据库)

Tomcat能处理动态资源（效率比较慢），也能处理静态资源

1.jpg.png

环境准备
JVM  （Java   virtual   machine  Java）    
1.让软件的程序代码运行在虚拟机里面  1份代码在多个平台运行   代码的可移植性
2.关注虚拟机的内存使用情况

JDK （Java  development  kit  Java）开发环境（运行环境）
提供Java运行环境和命令jvm

常用的JDK
JDK（Oracle)
OpenJDK

环境准备

第一个历程：创建好上传软件包的路径
[root@tomcat ~]# mkdir -p /app/tools
[root@tomcat ~]# cd /app/tools
[root@tomcat /app/tools]# rz -E
rz waiting to receive.
[root@tomcat /app/tools]# ll
total 206220
-rw-r--r-- 1 root root   9128610 Feb 18 14:58 apache-tomcat-8.0.27.tar.gz
-rw-r--r-- 1 root root 181238643 Feb 18 15:02 jdk-8u60-linux-x64.tar.gz
-rw-r--r-- 1 root root  20797013 Feb 18 15:02 jpress.zip

第二个历程：准备jdk环境
1.解压JDK包
[root@tomcat /app/tools]# tar xf jdk-8u60-linux-x64.tar.gz
[root@tomcat /app/tools]# mv jdk1.8.0_60/ /app/
[root@tomcat /app/tools]# ls -n /app
total 0
drwxr-xr-x 8 10 143 255 Aug  5  2015 jdk1.8.0_60
drwxr-xr-x 2  0   0  92 Feb 24 10:21 tools 
[root@tomcat /app/tools]# ln -s /app/jdk1.8.0_60/  /app/jdk
[root@tomcat /app/tools]# ll -d /app/jdk
lrwxrwxrwx 1 root root 17 Feb 24 10:21 /app/jdk -> /app/jdk1.8.0_60/

2.配置JDK环境变量
[root@tomcat tools]# cat >>/etc/profile<<'EOF'
export JAVA_HOME=/app/jdk
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar
EOF
[root@tomcat tools]# . /etc/profile   ---进行生效
[root@tomcat /app/tools]# java -version 
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)

第三个历程：
1.部署Tomcat  （默认端口号8080）
[root@tomcat /app/tools]# pwd 
/app/tools
[root@tomcat /app/tools]# tar xf apache-tomcat-8.0.27.tar.gz 
[root@tomcat /app/tools]# mv apache-tomcat-8.0.27 /app/
[root@tomcat /app/tools]# ln -s /app/apache-tomcat-8.0.27/ /app/tomcat 
[root@tomcat /app/tools]# ll /app
total 0
drwxr-xr-x 9 root root 160 Feb 24 10:31 apache-tomcat-8.0.27
lrwxrwxrwx 1 root root  17 Feb 24 10:21 jdk -> /app/jdk1.8.0_60/
drwxr-xr-x 8   10  143 255 Aug  5  2015 jdk1.8.0_60
lrwxrwxrwx 1 root root  26 Feb 24 10:32 tomcat -> /app/apache-tomcat-8.0.27/
drwxr-xr-x 2 root root  92 Feb 24 10:31 tools

2.检测 tomcat jdk环境变量是否ok
[root@tomcat /app/tools]# /app/tomcat/bin/version.sh 
Using CATALINA_BASE:   /app/tomcat
Using CATALINA_HOME:   /app/tomcat
Using CATALINA_TMPDIR: /app/tomcat/temp
Using JRE_HOME:        /app/jdk
Using CLASSPATH:       /app/tomcat/bin/bootstrap.jar:/app/tomcat/bin/tomcat-juli.jar
Server version: Apache Tomcat/8.0.27
Server built:   Sep 28 2015 08:17:25 UTC
Server number:  8.0.27.0
OS Name:        Linux
OS Version:     3.10.0-957.el7.x86_64
Architecture:   amd64
JVM Version:    1.8.0_60-b27
JVM Vendor:     Oracle Corporation

export TOMCAT_HOME=/application/tomcat


3.启动 tomcat
[root@tomcat /app/tools]# /app/tomcat/bin/startup.sh   启动方式
Using CATALINA_BASE:   /app/tomcat
Using CATALINA_HOME:   /app/tomcat
Using CATALINA_TMPDIR: /app/tomcat/temp
Using JRE_HOME:        /app/jdk
Using CLASSPATH:       /app/tomcat/bin/bootstrap.jar:/app/tomcat/bin/tomcat-juli.jar
Tomcat started.

4.检查进程
[root@tomcat /app/tools]# ss -lntup|grep java （ 查看端口）
tcp    LISTEN     0      100      :::8009                 :::*                   users:(("java",pid=23186,fd=51))
tcp    LISTEN     0      100      :::8080                 :::*                   users:(("java",pid=23186,fd=46))
tcp    LISTEN     0      1      ::ffff:127.0.0.1:8005                 :::*                   users:(("java",pid=23186,fd=66))
[root@tomcat /app/tools]# ps -ef|grep java  （ 查看进程）
root      23186      1  1 10:44 pts/1    00:00:04 /app/jdk/bin/java -Djava.util.logging.config.file=/app/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/app/tomcat/endorsed -classpath /app/tomcat/bin/bootstrap.jar:/app/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/app/tomcat -Dcatalina.home=/app/tomcat -Djava.io.tmpdir=/app/tomcat/temp org.apache.catalina.startup.Bootstrap start
root      23233  22864  0 10:49 pts/1    00:00:00 grep --color=auto java

[root@tomcat /app/tools]# ls -l /app/tomcat/bin/{startup.,shutdown.,catalina.,version.}*
-rw-r--r-- 1 root root 13825 Sep 28  2015 /app/tomcat/bin/catalina.bat
-rwxr-xr-x 1 root root 21389 Sep 28  2015 /app/tomcat/bin/catalina.sh
-rw-r--r-- 1 root root  2020 Sep 28  2015 /app/tomcat/bin/shutdown.bat
-rwxr-xr-x 1 root root  1902 Sep 28  2015 /app/tomcat/bin/shutdown.sh
-rw-r--r-- 1 root root  2022 Sep 28  2015 /app/tomcat/bin/startup.bat
-rwxr-xr-x 1 root root  1904 Sep 28  2015 /app/tomcat/bin/startup.sh
-rw-r--r-- 1 root root  2026 Sep 28  2015 /app/tomcat/bin/version.bat
-rwxr-xr-x 1 root root  1908 Sep 28  2015 /app/tomcat/bin/version.sh

最后一步：浏览器访问  IP加端口
[root@tomcat /app/tools]# ip a 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:e8:67:3a brd ff:ff:ff:ff:ff:ff
    inet 10.0.0.8/24 brd 10.0.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fee8:673a/64 scope link 
       valid_lft forever preferred_lft forever

2.jpg

Tomcat目录结构
[root@tomcat ~]# ll /app/tomcat/
total 92
drwxr-xr-x 2 root root  4096 Feb 24 10:31 bin
drwxr-xr-x 3 root root   198 Feb 24 10:44 conf
drwxr-xr-x 2 root root  4096 Feb 24 10:31 lib
-rw-r--r-- 1 root root 57011 Sep 28  2015 LICENSE
drwxr-xr-x 2 root root   197 Feb 24 10:44 logs
-rw-r--r-- 1 root root  1444 Sep 28  2015 NOTICE
-rw-r--r-- 1 root root  6741 Sep 28  2015 RELEASE-NOTES
-rw-r--r-- 1 root root 16204 Sep 28  2015 RUNNING.txt
drwxr-xr-x 2 root root    30 Feb 24 10:31 temp
drwxr-xr-x 7 root root    81 Sep 28  2015 webapps
drwxr-xr-x 3 root root    22 Feb 24 10:44 work

bin命令tomcat管理命令
1.startup.sh  启动
2.shutdown.sh 停止
3.catalina.sh   #开关调用的核心脚本  Tomcat优化  开启Tomcat监控功能

.bin 命令 tomcat管理命令
   startup.sh 
   shutdown.sh
   catalina.sh  #开关调用的核心脚本  tomcat优化  开启tomcat监控功能

.分析startup.sh

image.png

Tomcat的web管理功能

[root@tomcat /app/tomcat]# ll conf/tomcat-users.xml 
[root@tomcat /app/tomcat]# cat conf/tomcat-users.xml    精简版
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users xmlns="http://tomcat.apache.org/xml"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
              version="1.0">
  <role rolename="host-gui"/>
  <role rolename="admin-gui"/>
  <role rolename="manager-gui"/>
  <user username="tomcat" password="tomcat" roles="hots-gui,admin-gui,manager-gui"/>
</tomcat-users>

先关闭在重启
[root@tomcat /app/tomcat]# /app/tomcat/bin/shutdown.sh 
[root@tomcat /app/tomcat]# /app/tomcat/bin/startup.sh

然后浏览器测试

1.png
输入admin和密码会出现这个，输入错误会报401，返回之前界面即可

2.png
故障：

3.png

Tomcat部署应用
准备：

数据库
jpress.zip

第一步：数据库
yum install -y mariadb-server mariadb
systemctl start mariadb.service 启动
 systemctl enable mariadb.service开机自启动

进入数据库
[root@tomcat ~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.64-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.


MariaDB [(none)]> create database jpress  default charset utf8;
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| jpress             |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.00 sec)

MariaDB [(none)]> 
MariaDB [(none)]> grant all on jpress.* to  jpress@'localhost'  identified by  'jpress';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> grant all on jpress.* to  jpress@'172.16.1.%'  identified by  'jpress';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> select user,host from mysql.user;
+--------+------------+
| user   | host       |
+--------+------------+
| root   | 127.0.0.1  |
| jpress | 172.16.1.% |
| root   | ::1        |
|        | localhost  |
| jpress | localhost  |
| root   | localhost  |
|        | tomcat     |
| root   | tomcat     |
+--------+------------+
8 rows in set (0.00 sec)

删除空用户
MariaDB [(none)]> drop  user ''@localhost;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> drop  user ''@'tomcat';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> select user,host from mysql.user;
+--------+------------+
| user   | host       |
+--------+------------+
| root   | 127.0.0.1  |
| jpress | 172.16.1.% |
| root   | ::1        |
| jpress | localhost  |
| root   | localhost  |
| root   | tomcat     |
+--------+------------+
6 rows in set (0.00 sec)

生效
MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

部署jpress.war

[root@tomcat ~]# cd /app/tools/

[root@tomcat /app/tools]# ll

total 206220

-rw-r--r-- 1 root root 9128610 Feb 18 14:58 apache-tomcat-8.0.27.tar.gz

-rw-r--r-- 1 root root 181238643 Feb 18 15:02 jdk-8u60-linux-x64.tar.gz

-rw-r--r-- 1 root root 20797013 Feb 18 15:02 jpress.zip

[root@tomcat /app/tools]# cp jpress.zip /app/tomcat/webapps/

[root@tomcat /app/tools]#

[root@tomcat /app/tools]# ll /app/tomcat/webapps/

total 20320

drwxr-xr-x 14 root root 4096 Feb 24 10:31 docs

drwxr-xr-x 6 root root 83 Feb 24 10:31 examples

drwxr-xr-x 5 root root 87 Feb 24 10:31 host-manager

-rw-r--r-- 1 root root 20797013 Feb 24 15:04 jpress.zip

drwxr-xr-x 5 root root 103 Feb 24 10:31 manager

drwxr-xr-x 3 root root 4096 Feb 24 10:31 ROOT

[root@tomcat /app/tools]# ps -ef |grep java

root 23376 1 0 11:29 pts/1 00:00:18 /app/jdk/bin/java -Djava.util.logging.config.file=/app/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/app/tomcat/endorsed -classpath /app/tomcat/bin/bootstrap.jar:/app/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/app/tomcat -Dcatalina.home=/app/tomcat -Djava.io.tmpdir=/app/tomcat/temp org.apache.catalina.startup.Bootstrap start

root 24292 22864 0 15:04 pts/1 00:00:00 grep --color=auto java

[root@tomcat /app/tools]# mv /app/tomcat/webapps/jpress.zip /app/tomcat/webapps/jpress.war

[root@tomcat /app/tools]# ll /app/tomcat/webapps/

total 20320

drwxr-xr-x 14 root root 4096 Feb 24 10:31 docs

drwxr-xr-x 6 root root 83 Feb 24 10:31 examples

drwxr-xr-x 5 root root 87 Feb 24 10:31 host-manager

drwxr-xr-x 7 root root 102 Feb 24 15:05 jpress

-rw-r--r-- 1 root root 20797013 Feb 24 15:04 jpress.war

drwxr-xr-x 5 root root 103 Feb 24 10:31 manager

drwxr-xr-x 3 root root 4096 Feb 24 10:31 ROOT

浏览器访问IP加端口后在加个jpress

网站首页http://10.0.0.8:8080/jpress/

网站后台管理http://10.0.0.8:8080/jpress/admin/

4.png

5.png

6.png

jpress数据库内容：

MariaDB [(none)]> select * from jpress.jpress_content\G
*************************** 1. row ***************************
              id: 1
           title: 赵雯是个小仙女
            text: <p><img src="/jpress/attachment/20200224/1d1e6c3f54cd42b6a3a73ec7a46e19f8.jpg" 
                                            图片存储路径
 alt="" width="1081" height="1080"></p>
         summary: NULL
         link_to: NULL
 markdown_enable: 0
       thumbnail: NULL
          module: article
           style: NULL
         user_id: 1
          author: NULL
      user_email: NULL
         user_ip: NULL
      user_agent: NULL
       parent_id: NULL
       object_id: NULL
    order_number: 0
          status: normal
         vote_up: 0
       vote_down: 0
            rate: NULL
      rate_count: 0
           price: 0.00
  comment_status: NULL
   comment_count: 0
    comment_time: NULL
      view_count: 0
         created: 2020-02-24 15:21:05
        modified: 2020-02-24 15:21:05
            slug: 赵雯是个小仙女
            flag: NULL
             lng: NULL
             lat: NULL
   meta_keywords: NULL
meta_description: NULL
         remarks: NULL
1 row in set (0.00 sec)
用户上从的目录
[root@tomcat /app/tools]# ll /app/tomcat/webapps/jpress/attachment/20200224/
total 124
-rw-r--r-- 1 root root 24864 Feb 24 15:20 1d1e6c3f54cd42b6a3a73ec7a46e19f8_780x240.jpg
-rw-r--r-- 1 root root 94821 Feb 24 15:20 1d1e6c3f54cd42b6a3a73ec7a46e19f8.jpg

jpress正在使用哪个数据库
[root@tomcat /app/tomcat/webapps]# pwd
/app/tomcat/webapps
[root@tomcat /app/tomcat/webapps]# cat jpress/WEB-INF/classes/db.properties 
#Auto create by JPress
#Mon Feb 24 15:13:27 CST 2020
db_name=jpress
db_host_port=3306
db_tablePrefix=jpress_
db_host=localhost
db_password=lpress
db_user=jpress
============================================================================
Tomcat配置文件说明  server.xml
[root@tomcat /app/tomcat/webapps]# cd ..
[root@tomcat /app/tomcat]# vim conf/server.xml 

#8005端口  SHUTDOWN端口
<Server port="8005" shutdown="SHUTDOWN">
测试：
[root@tomcat ~]# telnet 127.0.0.1 8005
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
输入SHUTDOWN  就会关闭Java程序

#tomcat 管理端的配置
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <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>
#tomcat的web功能
    <Connector port="8080"  端口   protocol="HTTP/1.1"协议/协议版本
               connectionTimeout="20000"   连接超时时间  单位毫秒
               redirectPort="8443" />  
#其他服务与tomcat沟通连接用的端口
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
#tomcat虚拟主机部分
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->

        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html
             Note: The pattern used is equivalent to using pattern="common" -->
定义的访问日志以及格式：
        <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" />

 
----------------------------------------------------------
directory="logs"       日志目录
prefix="localhost_access_log"  prefix前缀        
suffix=".txt"                 suffix后缀
------------------------------------------------------------
#java程序包
##war包  压缩包   需要放在webapps  目录  运行  自动解压  自动部署
##jar包   集成tomcat  Java   XXX.jar  运行
NGINX和Tomcat的对比
nginx tomcat 备注
server_name  Host name 域名
root appBase 站点目录

image.png

Tomcat与nginx的配合
tomcat处理动态和静态   处理静态资源慢
nginx处理静态
tomcat处理动态

配置:nginx的负载均衡功能
upstream  static {
    server  10.0.0.7:80;
    server  10.0.0.9:80;
    server  10.0.0.7:80;
}

upstream  default {
     server  10.0.0.10:8080;
     server  10.0.0.11:8080;
      server  10.0.0.12:8080;
      server  10.0.0.12:8081;
}

server {
  location ~*  "\.（jpg|jpep|bmp|gif|png$"  {
  proxy_pass http://static;
  proxy_set_header  Host $host;
  proxy_set_header  X-Forwarded-For  $remote_addr;
}
}

tomcat 多实例
4U  4路 1tb内存   16*1tb  ssd raid 10   运行tomcat
tomcat 配置多实例注意事项：端口不能冲突

[root@tomcat ~]# cd /app/tools/
[root@tomcat /app/tools]# ll
total 206220
-rw-r--r-- 1 root root   9128610 Feb 18 14:58 apache-tomcat-8.0.27.tar.gz
-rw-r--r-- 1 root root 181238643 Feb 18 15:02 jdk-8u60-linux-x64.tar.gz
-rw-r--r-- 1 root root  20797013 Feb 18 15:02 jpress.zip
drwxr-xr-x 2 root root        24 Feb 24 15:14 logs
[root@tomcat /app/tools]# tar xf apache-tomcat-8.0.27.tar.gz 
[root@tomcat /app/tools]# ll
total 206220
drwxr-xr-x 9 root root       160 Feb 24 16:18 apache-tomcat-8.0.27
-rw-r--r-- 1 root root   9128610 Feb 18 14:58 apache-tomcat-8.0.27.tar.gz
-rw-r--r-- 1 root root 181238643 Feb 18 15:02 jdk-8u60-linux-x64.tar.gz
-rw-r--r-- 1 root root  20797013 Feb 18 15:02 jpress.zip
drwxr-xr-x 2 root root        24 Feb 24 15:14 logs
[root@tomcat /app/tools]# cp -r apache-tomcat-8.0.27 tomcat_8081
[root@tomcat /app/tools]# cp -r apache-tomcat-8.0.27 tomcat_8082
[root@tomcat /app/tools]# sed -i 's#8080#8081#g'  tomcat_8081/conf/server.xml 
[root@tomcat /app/tools]# sed -i 's#8005#8006#g'  tomcat_8081/conf/server.xml 
[root@tomcat /app/tools]# sed -i 's#8009#8010#g'  tomcat_8081/conf/server.xml 
[root@tomcat /app/tools]# 
[root@tomcat /app/tools]# 
[root@tomcat /app/tools]# sed -i 's#8080#8082#g'  tomcat_8082/conf/server.xml 
[root@tomcat /app/tools]# sed -i 's#8005#8007#g'  tomcat_8082/conf/server.xml 
[root@tomcat /app/tools]# sed -i 's#8009#8011#g'  tomcat_8082/conf/server.xml 
[root@tomcat /app/tools]# 
[root@tomcat /app/tools]# 
[root@tomcat /app/tools]# mv tomcat_808* /app/
[root@tomcat /app/tools]# /app/tomcat_8081/bin/startup.sh    启动
Using CATALINA_BASE:   /app/tomcat_8081
Using CATALINA_HOME:   /app/tomcat_8081
Using CATALINA_TMPDIR: /app/tomcat_8081/temp
Using JRE_HOME:        /app/jdk
Using CLASSPATH:       /app/tomcat_8081/bin/bootstrap.jar:/app/tomcat_8081/bin/tomcat-juli.jar
Tomcat started.
[root@tomcat /app/tools]# /app/tomcat_8082/bin/startup.sh    启动
Using CATALINA_BASE:   /app/tomcat_8082
Using CATALINA_HOME:   /app/tomcat_8082
Using CATALINA_TMPDIR: /app/tomcat_8082/temp
Using JRE_HOME:        /app/jdk
Using CLASSPATH:       /app/tomcat_8082/bin/bootstrap.jar:/app/tomcat_8082/bin/tomcat-juli.jar
Tomcat started.


测试，书写一些内容
[root@tomcat /app/tools]# echo tomcat 8081>/app/tomcat_8081/webapps/ROOT/oldboy.jsp
[root@tomcat /app/tools]# echo tomcat 8081 >/app/tomcat_8081/webapps/ROOT/oldboy.jsp
[root@tomcat /app/tools]# echo tomcat 8082 >/app/tomcat_8082/webapps/ROOT/oldboy.jsp
[root@tomcat /app/tools]# curl  10.0.0.8:8081/oldboy.jsp
tomcat 8081
[root@tomcat /app/tools]# curl  10.0.0.8:8082/oldboy.jsp
tomcat 8082

[root@tomcat /app/tools]# ss -lntup|grep java
tcp    LISTEN     0      1      ::ffff:127.0.0.1:8007                 :::*                   users:(("java",pid=24722,fd=67))
tcp    LISTEN     0      100      :::8009                 :::*                   users:(("java",pid=24421,fd=51))
tcp    LISTEN     0      100      :::8010                 :::*                   users:(("java",pid=24693,fd=51))
tcp    LISTEN     0      100      :::8011                 :::*                   users:(("java",pid=24722,fd=51))
tcp    LISTEN     0      100      :::8080                 :::*                   users:(("java",pid=24421,fd=46))
tcp    LISTEN     0      100      :::8081                 :::*                   users:(("java",pid=24693,fd=46))
tcp    LISTEN     0      100      :::8082                 :::*                   users:(("java",pid=24722,fd=46))
tcp    LISTEN     0      1      ::ffff:127.0.0.1:8005                 :::*                   users:(("java",pid=24421,fd=67))
tcp    LISTEN     0      1      ::ffff:127.0.0.1:8006                 :::*                   users:(("java",pid=24693,fd=66))

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