Java数据库篇1——数据库配置

╰半夏微凉° 2023-10-03 16:05 2阅读 0赞

## Java数据库篇1——数据库配置 ##

### 1、数据库 ###

*  数据库(DataBase) 就是存储和管理数据的仓库
 *  本质是一个文件系统, 还是以文件的方式,将数据保存在电脑上

### 2、数据库的优点 ###

<table> 
 <thead> 
  <tr> 
   <th>存储方式</th> 
   <th>优点</th> 
   <th>缺点</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>内存</td> 
   <td>速度快</td> 
   <td>不能够永久保存,数据是临时状态的</td> 
  </tr> 
  <tr> 
   <td>文件</td> 
   <td>数据是可以永久保存的</td> 
   <td>使用IO流操作文件, 不方便</td> 
  </tr> 
  <tr> 
   <td>数据库</td> 
   <td>1.数据可以永久保存 2.方便存储和管理数据 3.使用统一的方式操作数据库 (SQL)</td> 
   <td>占用资源,有些数据库需要付费</td> 
  </tr> 
 </tbody> 
</table>

### 3、Mysql数据库 ###

[mysql官网下载][mysql]

#### 3.1、安装5.x ####

[mysql5.5 百度云：https://pan.baidu.com/s/1uS-DfapWgISmPlHfRaofzg][mysql5.5 _https_pan.baidu.com_s_1uS-DfapWgISmPlHfRaofzg]提取码：jwc3

运行exe

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70][]

同意协议

!\](https://img-blog.csdnimg.cn/20210716232047508.png?x-oss-process=image/watermark,type\_ZmFuZ3poZW5naGVpdGk,shadow\_10,text\_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size\_16,color\_FFFFFF,t\_70)

默认即可

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 1][]

安装

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 2]

完成

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下一步

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默认即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 5]

默认即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 6]

默认即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 7]

默认即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 8]

默认即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 9]

添加防火墙

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 10]

更改语言

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 11]

添加到环境变量

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 12]

密码、重复密码、允许远程访问

![\[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-p61UwCw4-1626448745251)(C:\\Users\\yoya\\AppData\\Roaming\\Typora\\typora-user-images\\image-20210716230335403.png)\]][img-p61UwCw4-1626448745251_C_Users_yoya_AppData_Roaming_Typora_typora-user-images_image-20210716230335403.png]

安装

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 13]

未响应或者卡住表示安装失败，卸载后重复上面的步骤即可，出现下图表成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 14][]

#### 3.2、安装8.x ####

[mysql8.0.17 百度云：https://pan.baidu.com/s/1\_QLG-SQBNrALSUcJ4wWzxg][mysql8.0.17 _https_pan.baidu.com_s_1_QLG-SQBNrALSUcJ4wWzxg]提取码：ltul

解压到想安装的位置

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 15]

右击此电脑，选择属性，点击高级系统设置

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点击环境变量，找到PATH，选择编辑

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 17]

点击新建，放入mysql得到安装位置，例如我这里是

D:\mysql-8.0.17-winx64\bin

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 18][]

书写配置文件 my.ini

[mysql]
    # 设置mysql客户端默认字符集
    default-character-set=utf8
    
    [mysqld]
    # 设置3306端口
    port = 3306
    # 设置mysql的安装目录
    basedir=D:\mysql-8.0.17-winx64
    # 设置 mysql数据库的数据的存放目录，MySQL 8+ 不需要以下配置，系统自己生成即可，否则有可能报错
    datadir=D:\mysql-8.0.17-winx64\data
    # 允许最大连接数
    max_connections=20
    # 服务端使用的字符集默认为8比特编码的latin1字符集
    character-set-server=utf8
    # 创建新表时将使用的默认存储引擎
    default-storage-engine=INNODB

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 19]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 20]

以管理员身份打开CMD

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 21]

安装数据库

mysqld install

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 22]

初始化数据库

mysqld --initialize-insecure --user=mysql

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 23]

出现data目录表示初始化成功

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 24]

启动数据库服务

net start mysql

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 25]

登录数据库

mysql -u root -p
    #第一次登录密码，输入密码时直接回车即可

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 26]

修改密码

语法
    alter user 'root'@'localhost' IDENTIFIED BY '新密码';
    实例
    alter user 'root'@'localhost' IDENTIFIED BY 'root';

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 27]

修改密码以后视图工具2058报错

由于新版mysql修改了密码加密规则导致

语法
    ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '密码';
    实例
    ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 28]

#### 3.3、卸载 ####

停止服务

net stop mysql

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 29]

在控制面板卸载mysql

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 30][]

删除数据库安装目录及以下的文件

5.x在C:\\ProgramData\\MySQL\\MySQL Server 5.5

8.x在自定义目录

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 31]

删除数据库服务

sc delete mysql mso

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 32]

### 4、数据库图形化界面 ###

#### 4.1、安装 ####

[sqlyog12.09 百度云：https://pan.baidu.com/s/1K4AjNaSLfasUl\_TMDxisxA提取码：sx9l][sqlyog12.09 _https_pan.baidu.com_s_1K4AjNaSLfasUl_TMDxisxA_sx9l]提取码：sx9l

语言

![20210716233223989.png][]

下一步

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 33]

接受

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 34]

下一步

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 35]

安装

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 36]

下一步

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 37]

完成

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 38]

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cr173
    8d8120df-a5c3-4989-8f47-5afc79c56e7c
    cr173
    59adfdfe-bcb0-4762-8267-d7fccf16beda
    cr173
    ec38d297-0543-4679-b098-4baadf91f983

注册成功

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 40]

[mysql]: https://dev.mysql.com/downloads/mysql/
[mysql5.5 _https_pan.baidu.com_s_1uS-DfapWgISmPlHfRaofzg]: https://pan.baidu.com/s/1uS-DfapWgISmPlHfRaofzg
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210716231959441.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2021071623210545.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20210716232212851.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20210716232229502.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20210716232243990.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20210716232258802.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20210716232313852.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA_size_16_color_FFFFFF_t_70 9]: https://img-blog.csdnimg.cn/2021071623232767.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2d5ZmdoaA==,size_16,color_FFFFFF,t_70
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