1、创建spring boot项目，如下图所示
2、添加maven依赖，代码如下
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
3、修改application.properties配置文件，添加如下代码
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
4、添加测试代码，在启动方法中添加如下代码，用JdbcTemplate操作数据库
@SpringBootApplication
public class SpringBootMysqlApplication {
public static void main(String[] args) {
ConfigurableApplicationContext context =
SpringApplication.run(SpringBootMysqlApplication.class, args);
JdbcTemplate jdbcTemplate = context.getBean(JdbcTemplate.class);
List<Map<String, Object>> result =
jdbcTemplate.queryForList("SELECT * FROM USER");
System.out.println(result);
}
}
5、点击启动按钮，启动程序
6、在控制台打印了user表的所有信息，如下图所示，mysql配置成功，数据连接池也创建成功
