Spring Boot版本:2.1.2.RELEASE
H2版本:1.4.197
通过JpaRepository查询:
@Repository
public interface PlayerStorage extends JpaRepository<Player, Long> {
List<Player> findByUid(@Param("uid") List<Integer> uid);
}
...
List<Player> foundByUids = playerStorage.findByUid(Arrays.asList(100, 200));
弹簧生成和执行的查询:
Data conversion error converting "(100, 200)"; SQL statement:
select
player0_.id as id1_3_,
player0_.uid as uid3_3_
from
player player0_
where
player0_.uid=(100 , 200)
[22018-197]
...
Caused by: java.lang.NumberFormatException: For input string: "(100, 200)"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:569)
at java.lang.Integer.parseInt(Integer.java:615)
at org.h2.value.Value.convertTo(Value.java:1061)
H2说:
DATA_CONVERSION_ERROR_1 = 22018
The error with code 22018 is thrown when trying to convert a value to a data type where the conversion is undefined, or when an error occurred trying to convert.
Example:
CALL CAST(DATE '2001-01-01' AS BOOLEAN);
CALL CAST('CHF 99.95' AS INT);
如果我尝试直接从H2 Web控制台执行此查询,则会得到相同的结果。如果我这样做是正确的,问题是在声明:player0_.uid=(100 , 200)
。用的在 player0_.uid in (100 , 200)
执行从web控制台细
我还有H2的spring boot属性:
spring.datasource.driver-class-name=org.h2.Driver
spring.jpa.database=H2
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
答案 0 :(得分:3)
可能,该错误是在存储库中的代码:
public interface PlayerStorage extends JpaRepository<Player, Long> {
List<Player> findByUid(@Param("uid") List<Integer> uid);
}
在documentation中应该是:
public interface PlayerStorage extends JpaRepository<Player, Long> {
List<Player> findByUidIn(@Param("uid") List<Integer> uid);
}
也:
答案 1 :(得分:2)
尝试你的方法重命名为
List<Player> findByUidIn(@Param("uids") List<Integer> uids);