Linux下搭建Web项目运行环境Tomcat+Mysql+Jdk

环境说明

系统 ：CentOS 6

Tomcat ：apache-tomcat-8.5.9

JDK版本 ：jdk-1.8.0_144

Mysql版本：5.7.19 MySQL Community Server (GPL)

软件安装

JDK安装

1、先卸载CentOS自带的JDK，搜索已安装jdk

rpm -qa | grep java

2、使用rpm -e –nodeps 包名 卸载已安装的jdk

3、官网下载jdk rpm包：


4、安装：

rpm -ivh jdk-8u144-linux-x64.rpm

5、测试安装是否成功：

java -version

， 出现



说明安装成功！

Tomcat安装

1、下载Tomcat :apache-tomcat-8.5.9.tar.gz：


2、解压缩解打包：

tar -zxvf apache-tomcat-8.5.9.tar.gz

3、

cd apache-tomcat-8.5.9

4、

cd bin

5、

./startup.sh

出现如下：



说明安装成功！

6、开启防火墙8080端口：

/sbin/iptables -I -INPUT -p tcp --dport 8080 -j ACCEPT

7、保存防火墙配置：

/etc/rc.d/init.d/iptables save

8、重启防火墙：service iptables restart



9、打开浏览器，输入http://本机IP:8080，回车，看到下图说明tomcat安装成功



Mysql安装

PS：装Mysql花了很长的时间，尝试了几种方式，最后使用的yum方式，因为它足够简单快捷，新手建议使用这种方式。

软件卸载

1、输入：

rpm -qa | grep -i mysql

，若存在比mysql5.7版本低的包（我这里是为了安装Mysql 5.7），则要先卸载它们，没有就跳到2

卸载 ：

rpm -e 包名 --nodeps

2、输入：

yum list installed mysql*

查询是否以yum方式安装过mysql，，若有先卸载，没有就跳到3。

输入：

yum -y remove installed mysql*

删除 /var/lib/mysql下的所有文件:

rm -rf /var/lib/mysql/

,不存在就算了

Yum方式安装Mysql指定版本

目前Mysql最新版本是5.7.19，所以我这里指定下Mysql 5.7.19

1、修改yum源:

vim /etc/yum.repos.d/mysql-community.repo

,添加内容如下：

[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/6/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

保证只有[mysql57-community]下的enabled=1

2、查询yum源是否已经存在了：

yum repolist enabled | grep mysql

，可以看到新增的yum源已经生效



3、签名：

vim /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

，将如下内容复制进去，保存退出。

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.9 (SunOS)

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=443I
-----END PGP PUBLIC KEY BLOCK-----

问：我要如何找到我要的版本的yum源地址，还有怎么找到对应的签名文件呢？

见：yum方式安装指定版本Mysql

4、安装Mysql：

yum -y install mysql-community-server

5、启动

mysql：service mysqld start

,若启动成功说明安装成功

Mysql配置

1、设置mysql编码：输入：vim /etc/my.cnf，进入到mysql的配置文件设置mysql的编码为utf8 , 在 mysqld 标签下添加：

character_set_server=utf8
init_connect='SET NAMES utf8'

设置mysql连接的端口和mysql客户端编码：在client标签（若没有就添加client标签）下添加：

port=3306

default-character-set=utf8

保存退出，my.cnf的内容如下：

[mysqld]
character_set_server=utf8
init_connect='SET NAMES utf8'
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

symbolic-links=0

log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
sql_mode=STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
[client]
port=3306
default-character-set=utf8

2、重启mysql:

service mysqld restart

3、输入mysql进入mysql（刚装没有密码）

4、设置密码（如这里设置用户名root，密码123456）：

use mysql;
update user set password=password("密码") where user="root";
flush privileges;

PS：plush privileges有啥作用？

答：mysql 新设置用户或更改密码后需用flush privileges刷新MySQL的系统权限相关表，否则会出现拒绝访问，还有一种方法，就是重新启动mysql服务器，来使新设置生效。

5、授权用户外网访问：

grant all PRIVILEGES on *.* to root@'%'  identified by '123456';
flush privileges ;

6、开放防火墙 3306端口：

vim /etc/sysconfig/iptables

在

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

之前添加：

-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

重启防火墙

Service iptables restart

7、导入数据：

service mysqld restart

（需先将sql文件传到服务器）

mysql -u root -p

输入密码进入mysql

创建数据库：

create database db_name;

导入数据：

use db_name;
source  sql文件的全路径

启动项目

1、将项目导出成war包，然后将解压，将解压后的文件放入tomcat的webapps文件夹下，注意更改项目的数据库配置文件中的参数要和你的数据库的用户名和密码一致。

2、启动tomcat（见tomcat安装）

3、打开浏览器输入：http://服务器ip:8080/项目名/首页地址，如：

http://192.168.121.150:8080/MyProject/index.jsp