springboot整合内置嵌入式mysql服务教程

Posted 2021-10-20 洛阳泰山

pom文件引入依赖

        <!-- 内嵌mysql server -->
        <dependency>
            <groupId>com.wix</groupId>
            <artifactId>wix-embedded-mysql</artifactId>
            <version>4.6.1</version>
            <scope>compile</scope>
        </dependency>

springboot项目整合EmbeddedMysql配置类

import com.wix.mysql.EmbeddedMysql;
import com.wix.mysql.ScriptResolver;
import com.wix.mysql.config.MysqldConfig;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.util.concurrent.TimeUnit;

import static com.wix.mysql.EmbeddedMysql.anEmbeddedMysql;
import static com.wix.mysql.config.Charset.UTF8;
import static com.wix.mysql.config.MysqldConfig.aMysqldConfig;
import static com.wix.mysql.distribution.Version.v5_6_23;

@Configuration
@ConditionalOnProperty(prefix = "cms",name = "embedded.mysql.enabled",havingValue = "true")
public class EmbeddedMysqlConfig {

    private EmbeddedMysql mysql;

    @PostConstruct
    public void launchDb(){
        //mysql版本
        MysqldConfig config = aMysqldConfig(v5_6_23)
                .withCharset(UTF8)
                //端口号
                .withPort(3306)
                //用户名密码
                .withUser("tarzan", "123456")
                //时区
                .withTimeZone("Asia/Shanghai")
                //超时
                .withTimeout(1, TimeUnit.MINUTES)
                .withServerVariable("max_connect_errors", 666)
                .withTempDir("C:\\\\Users\\\\liuya\\\\Desktop\\\\data\\\\")
                .build();
        mysql = anEmbeddedMysql(config)
                //初始化数据表结构
                .addSchema("tarzan_cms", ScriptResolver.classPathScript("db/schema.sql"))
                .start();

        System.out.println(mysql.getConfig().toString());
    }

   @PreDestroy
    public void stopDb(){
        mysql.stop();
    }
}

配置完，springboot项目启动时候，会先启动内置的mysql服务，spring配置文件配置数据库连接

spring:
  datasource:
    type: com.alibaba.druid.pool.DruidDataSource
    driverClassName: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/tarzan_cms?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=GMT%2B8&allowPublicKeyRetrieval=true
    username: tarzan
    password: 123456

这样就省去了，安装mysql的步骤，不过目前这种配置方式，每次项目重启，会新建一个新的mysql服务，原来的数据会丢失。

详细大家可以参考EmbeddedMysql的GitHub源码。
GitHub - wix/wix-embedded-mysql: embedded mysql based on https://github.com/flapdoodle-oss/de.flapdoodle.embed.process