SpringBoot整合--JDCB(Mysql)

Posted 2022-01-27 闲言博客

1.导入依赖

<dependencies>
    <!--jdbc-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>
    <!--mysql 驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <!--lombok插件-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <!--测试相关-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

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2.编写yaml配置文件连接数据库

spring:
  datasource:
    #?serverTimezone=UTC解决时区的报错
    url: jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    username: root
    password: 123
    driver-class-name: com.mysql.cj.jdbc.Driver
    hikari:
      auto-commit: false

---

3.测试

@SpringBootTest
class SpringBootDemo02JdbcApplicationTests 

    @Autowired
    DataSource dataSource;

    @Test
    void contextLoads() throws Exception
        //默认数据源：class com.zaxxer.hikari.HikariDataSource
        System.out.println(dataSource.getClass());
        //获取数据库连接
        Connection connection = dataSource.getConnection();
        //是否自动提交事务
        boolean autoCommit = connection.getAutoCommit();
        System.out.println(autoCommit);
        connection.commit();
    

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