SpringBoot整合JDBC

1.引入maven依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

2.在application.properties配置文件中配置JDBC属性

#数据库jdbc连接url地址,serverTimezone设置数据库时区东八区
spring.datasource.url=jdbc:mysql://localhost:3306/springboot-001?serverTimezone=GMT%2B8
#数据库账号
spring.datasource.username=root
#数据库密码
spring.datasource.password=123
#指定数据库驱动
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

通过以上两部就已经完成了JDBC和SpringBoot的配置，就可以通过依赖注入的方式使用JdbcTemplate

@Service
public class UserDao {

    //SpringBoot提供的数据库操作类
    @Autowired
    JdbcTemplate jdbcTemplate;

    public List<User> getUserList() {
        return jdbcTemplate.query("select * from users", new BeanPropertyRowMapper(User.class));
    }

    public void createUser(User user) {
        jdbcTemplate.update("insert into users(name,age)values(?,?)",user.getName(),user.getAge());
    }

    public User getUser(Long id) {
        final User user = new User();
        jdbcTemplate.query("select * from users where id="+id,new RowCallbackHandler() {
            @Override
            public void processRow(ResultSet rs) throws SQLException { user.setId(id);
                user.setName(rs.getString("name")); user.setAge(rs.getInt("age"));
            }
        });
        return user;
    }

    public void updateUser(Long id, User user) {
        jdbcTemplate.update("update users set name=?,age=? where id=?",user.getName(),user.getAge(),id);
    }

    public void deleteUser(Long id) {
        jdbcTemplate.update("delete from users where id=?",id);
    }

}