Linux环境下JDK，Tomcat，MySQL的安装 Java Web项目部署

Linux环境下JDK，Tomcat，MySQL的安装，Java Web项目部署

• Linux（CentOS8操作系统）

Linux（CentOS8操作系统）

JDK安装

1. 使用CRT工具远程连接Linux(CentOS),Alt + P 打开上传窗口，拖入jdk-8u261-linux-x64.tar.gz，上传 到Linux的/root目录
2. 创建/usr/local/java目录
   [[email protected] ~]#mkdir -p /usr/local/java
3. 解压jdk-8u261-linux-x64.tar.gz到/usr/local/java
   [[email protected] ~]#tar -zxvf jdk-8u261-linux-x64.tar.gz -C /usr/local/java
4. [[email protected] ~]#vim /etc/profile
   在第二行添加环境变量

export JAVA_HOME=/usr/local/java/jdk1.8.0_261
export CLASSPATH=.:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
export PATH=$PATH:${JAVA_HOME}/bin

5. 使用source命令让环境变量生效
   [[email protected] ~]#source /etc/profile
6. 验证JDK是否生效
   [[email protected] ~]#java -version

Tomcat

1. 使用CRT工具远程连接Linux(CentOS),Alt + P 打开上传窗口，拖入apache-tomcat-9.0.39.tar.gz，上传到Linux的/root

2. 将apache-tomcat-9.0.39.tar.gz解压到/usr/local目录下
   [[email protected] ~]#tar -zxvf apache-tomcat-9.0.39.tar.gz -C /usr/local

3. 将解压后的apache-tomcat-9.0.39目录修改为tomcat
   [[email protected] ~]#cd /usr/local
   [[email protected] local]#mv apache-tomcat-9.0.39 tomcat

4. 启动tomcat
   [[email protected] local]#cd tomcat/bin
   [[email protected] bin]#./startup.sh
   [[email protected] bin]#ps -ef | grep tomcat

5. Window*问Tomcat
   http://192.168.45.128:8080 访问不了
   1）.考虑Linux上的防火墙是否开启。
   [[email protected] bin]#systemctl stop firewalld #停止防火墙
   [[email protected] bin]#systemctl status firewalld #查看防火墙状态
   [[email protected] bin]#systemctl disable firewalld #禁用防火墙

   2）.查看tomcat启动日志 /usr/local/tomcat/logs
   [[email protected] ~]#tail -f /usr/local/tomcat/logs/catalita.out

6. 停止tomcat
   [[email protected] local]#cd tomcat/bin
   [[email protected] bin]#./shutdown.sh

Tomcat 开机自启动

1. 修改bin目录下的catalina.sh文件
   第二行添加如下内容
   [[email protected] bin]# vim /usr/local/tomcat/bin/catalina.sh

export CATALINA_HOME=/usr/local/tomcat
export CATALINA_BASE=/usr/local/tomcat
#add tomcat pid
CATALINA_PID="${CATALINA_BASE}/tomcat.pid"
#add java opts
JAVA_OPTS="-server -XX:PermSize=256M -XX:MaxPermSize=1024m -Xms512M -Xmx1024M -XX:MaxNewSize=256m"

2. 增加tomcat.service
   在/usr/lib/systemd/system目录下增加tomcat.service
   [[email protected] bin]#cd /usr/lib/systemd/system
   [[email protected] system]#touch /usr/lib/systemd/system/tomcat.service
   [[email protected] system]#vim /usr/lib/systemd/system/tomcat.service

[Unit]
Description=Tomcat
After=syslog.target network.target remote-fs.target nss-lookup.target
[Service]  
Type=forking  
Environment="JAVA_HOME=/usr/local/java/jdk1.8.0_261"
PIDFile=/usr/local/tomcat/tomcat.pid    
ExecStart= /usr/local/tomcat/bin/startup.sh
ExecStop= /usr/local/tomcat/bin/shutdown.sh
ExecReload=/bin/kill -s HUP $MAINPID
RemainAfterExit= yes
[Install]
WantedBy=multi-user.target

3. 使用tomcat.service
   修改tomcat.service文件后需要执行下面命令使其生效：
   [[email protected] system]# systemctl daemon-reload #重新载入修改后配置文件
   [[email protected] system]# systemctl enable tomcat #配置开机启动
   [[email protected] system]# systemctl start tomcat #启动tomcat
   [[email protected] system]# systemctl status tomcat #查看tomcat状态
   [[email protected] system]# systemctl stop tomcat #停止tomcat
   [[email protected] system]# systemctl restart tomcat #重启tomcat

因为配置pid，在启动的时候会再tomcat根目录生成tomcat.pid文件，停止之后删除。
同时tomcat在启动时候，执行start不会启动两个tomcat，保证始终只有一个tomcat服务在运行。 多个tomcat可以配置在多个目录下，互不影响。

4. 测试Tomcat开机自启动
   [[email protected] ~]#reboot #重启Linux系统
   [[email protected] ~]#systemctl status tomcat.service

5. 查询tomcat 进程
   [[email protected]~]#ps -ef | grep tomcat
   如果多个tomcat，则拷贝到不同的目录，使用不同的端口。
   tomcat.service文件名不同即可。
   例如：tomcat1.service、 tomcat2.service、 tomcat3.service

MySQL

1. 使用CRT工具远程连接Linux(CentOS),Alt + P 打开上传窗口，拖入mysql-8.0.22-1.el8.x86_64.rpm-bundle.tar，上传到Linux的/root

2. 卸载CentOS上已经安装过的MySQL（CentOS7默认会安装一个MySQL）
   [[email protected] ~]#rpm -qa | grep mysql #查询Linux系统是否安装过MySQL
   [[email protected] ~]#rpm -e --nodeps 包名 #强制卸载

3. 创建MySQL安装目录
   [[email protected] ~]#mkdir -p /usr/local/mysql
   [[email protected] ~]#chmod -R 777 /usr/local/mysql

4. 将mysql-8.0.22-1.el8.x86_64.rpm-bundle.tar解压到/usr/local/mysql
   [[email protected] ~]#tar -xvf mysql-8.0.22-1.el8.x86_64.rpm-bundle.tar -C /usr/local/mysql
   [[email protected] ~]#cd /usr/local/mysql
   [[email protected] mysql]#ll
   mysql-community-common-8.0.22-1.el8.x86_64.rpm
   mysql-community-client-plugins-8.0.22-1.el8.x86_64.rpm
   mysql-community-libs-8.0.22-1.el8.x86_64.rpm
   mysql-community-client-8.0.22-1.el8.x86_64.rpm
   mysql-community-server-8.0.22-1.el8.x86_64.rpm
   [[email protected] mysql]#rpm -ivh mysql-community-common-8.0.22-1.el8.x86_64.rpm
   [[email protected] mysql]#rpm -ivh mysql-community-client-plugins-8.0.22-1.el8.x86_64.rpm
   [[email protected] mysql]#rpm -ivh mysql-community-libs-8.0.22-1.el8.x86_64.rpm
   [[email protected] mysql]#rpm -ivh mysql-community-client-8.0.22-1.el8.x86_64.rpm
   [[email protected] mysql]#rpm -ivh mysql-community-server-8.0.22-1.el8.x86_64.rpm

5. 验证MySQL是否安装成功
   [[email protected] mysql]#rpm -qa | grep mysql

6. 初始化MySQL
   [[email protected] mysql]#mysqld --initialize-insecure #初始化无密码
   [[email protected] mysql]#chown mysql:mysql /var/lib/mysql -R

7. 启动MySQL
   [[email protected] mysql]#systemctl start mysqld
   [[email protected] mysql]#systemctl status mysqld

8. 登录MySQL
   [[email protected] mysql]#mysql -u root -p
   直接回车
   mysql>alter user ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘root’;
   mysql>flush privileges;

9. 开启远程连接
   mysql>use mysql;
   mysql>update user set host=’%’ where user=‘root’;
   mysql>grant all privileges on . to ‘root’@’%’;
   mysql>flush privileges;

10. Window上使用SQLyog远程连接Linux系统上的MySQL服务器。
    新建连接，连接192.168.45.128服务器上的MySQL

p2p_management打包war部署到Linux服务器

1. window上使用SQLYog连接Linux服务器上的MySQL，执行p2p.sql

2. IDEA将p2p_management工程打包为p2p.war
   a.修改工程中的druid.properties的数据库服务器地址。
   b.File–Project Structure…—Artifacts—点击+号----选择Web Application:Archive----选择第二个For “p2p_manange”…
   c.修改name为p2p, 输出路径E:\p2p_management\out\artifacts\p2p
   d.点击OK
   e.点击Build----Build Artifacts…选择p2p—点击Build
   f.war包输出到E:\p2p_management\out\artifacts\p2p\p2p.war

3. 将p2p.war上传到Linux服务器上tomcat/webapps目录下。
   [[email protected] ~]# mv p2p.war /usr/local/tomcat/webapps/

4. 启动Tomcat。

5. Window上打开浏览器访问http://192.168.45.128:8080/p2p