這裡通過  spring jpa 設計資料的時候，處理問題，問題如下

Caused by: org.hibernate.tool.schema.spi.SchemaManagementException:
Unable to execute schema management to JDBC target

[create table order (id integer not null, order_time datetime, shop_id integer not null auto_increment, customer_id integer not null, car_id integer not null, primary key (shop_id, id, customer_id, car_id))]

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax;
 check the manual that corresponds to your MySQL server version for the right syntax to use near
  'order (id integer not null, order_time datetime, shop_id integer not null auto_i' at line 1




You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Order (id integer not null, orderTime datetime, car_id integer, customer_id inte' at line 1

看一下，可能資料哭的版本問題，或者是建立表的結構有問題，但是，一般人，都會先懷疑，是自己的pojo 對映表出現問題，

後來，測試，最簡單的ｐｏｊｏ還是有問題，於是，就懷疑是資料庫的版本有問題，於是，我換了一個pojo的類名稱，ｏｋ，搞定

之前，使用的是Order   ,後來，改為　Item ,可能是資料庫，把這個作為，一個系統的檔案，不讓改．所以．．．．