我有一个由Hibernate从实体类生成的表，该表的当前顺序是:
describe Context;
+--------------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------------+--------------+------+-----+---------+-------+
| id | int(11) | NO | PRI | NULL | |
| context | varchar(200) | NO | | NULL | |
| publish_time | datetime | NO | | NULL | |
| URL | varchar(400) | NO | | NULL | |
| term_id | int(11) | NO | MUL | NULL | |
+--------------+--------------+------+-----+---------+-------+
5 rows in set (0.00 sec)
然后该语句被配置为将数据加载到数据库:
LOAD DATA LOCAL INFILE 'context.txt' INTO TABLE Context FIELDS TERMINATED\ BY '\t' LINES TERMINATED BY '\n'
但是，数据文件“context.txt”的5列顺序与表中的列顺序不同。因此，当在应用程序中启动加载时，我收到此错误消息:
20:46:00,207 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport]
(ServerService Thread Pool -- 68) HHH000388: Unsuccessful: LOAD DATA
LOCAL INFILE '/myproject/src/main/resources/context.txt' INTO TABLE Context FIELDS TERMINATED BY '\t' LINES TERMINATED BY '\n'
20:46:00,207 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (ServerService Thread Pool -- 68) Cannot add or update a child row: a foreign key constraint fails (`BombDS`.`Context`, CONSTRAINT `FK_afatp1vwi13k5r0hftr04vctl` FOREIGN KEY (`term_id`) REFERENCES `Term` (`id`))
如果我无法更改文件中的顺序，有没有办法控制 Hibernate 生成的列顺序？
最佳答案
在 LOAD 语句中指定文件中列的顺序:
LOAD DATA LOCAL INFILE 'C:/Users/blah/Desktop/something.csv' INTO TABLE
test.test_table
FIELDS TERMINATED BY ','
optionally ENCLOSED by '"'
(id, name, count)
关于java - Hibernate 生成的表列顺序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35823251/