SpringBoot2.2.2版本自動建表

環境 idea2019.2  jdk1.8   數據庫mysql 5.7

項目 結構

 

new ->Project  使用springboot快速搭建web項目        選好sdk  next

填寫項目信息   next

 點Web-->勾選 Spring Web  

點SQL->勾選 JDBC API     和   MySQL  Driver

 確認最后的項目信息 Finish   篇幅太長 點開看           這個例子只是生成了表       最后的例子中有數據生成 

創建下面兩個配置文件   放在resource目錄下

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/jdbc?useSSL=true&serverTimezone=UTC&characterEncoding=UTF8
    data-username: root
    data-password: root
    initialization-mode: always
    schema=classpath: schema.sql

DROP TABLE IF EXISTS `department`;
CREATE TABLE `department` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `departmentName` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

手動新建jdbc數據庫       測試數據庫連接  

@RunWith(SpringRunner.class)手動添加  沒有自動生成

@RunWith(SpringRunner.class)
@SpringBootTest
class Springboot06jdbcApplicationTests {
    @Autowired
    DataSource dataSource;

    @Test
    void contextLoads() throws SQLException {
        System.out.println("------>>>"+dataSource.getClass());
        Connection connection = dataSource.getConnection();
        System.out.println("=========>>>"+connection);
        connection.close();
    }

}

springboot 2 以后默認使用HikariDataSource 數據源  

使用Hikari連接池

 

 

 驗證后  運行spingboot啟動類即可

 

 結果  

 

如果想生成表  並生成數據   請看下面操作

user.sql

 drop table  if exists user;
 create table user (id bigint(20) not null auto_increment,
 username varchar(40) DEFAULT NULL,
 name varchar(20) DEFAULT NULL,
 age int(3) DEFAULT NULL,
 balance decimal(10,2) DEFAULT NULL,
 primary key(id))ENGINE=InnoDB DEFAULT CHARSET=utf8;

data.sql

insert into user (id, username, name, age, balance) values (1,'account1','張三', 20, 100.00);
insert into user (id, username, name, age, balance) values (2,'account2','李四', 28, 180.00);
insert into user (id, username, name, age, balance) values (3,'account3','王五', 32, 280.00);

 修改application.yml    

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/jdbc?useSSL=true&serverTimezone=UTC&characterEncoding=UTF8
    data-username: root
    data-password: root
    initialization-mode: always
    #schema=classpath: schema.sql
    schema=classpath: user.sql
    data=classpath: data.sql

 生成表並且插入數據

完整的項目結構