Springboot配置MySQL数据库

一、创建springboot项目，并添加如下依赖

<dependency>
       <groupId>com.mysql</groupId>
       <artifactId>mysql-connector-j</artifactId>
       <scope>runtime</scope>
</dependency>

二、在application.properties中配置连接数据库信息

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/数据库名称
spring.datasource.username=root
spring.datasource.password=密码

三、在启动类中创建代码，并运行测试：

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        ConfigurableApplicationContext context =SpringApplication.run(DemoApplication.class, args);
        JdbcTemplate jdbcTemplate = context.getBean(JdbcTemplate.class);
        List<Map<String, Object>> result =
                jdbcTemplate.queryForList("SELECT * FROM student");
        System.out.println(result);
    }
}

运行结果：

数据库数据：