现在我有一个类User,我array从jsp或获得了一个请求数据html.
列出这个 Integer[] arr=[5,6,9,10,62,52,21]
然后我使用两种方法来完成膨胀删除操作.
@Transactional
@Override
public void deleteUser(Integer id) {
oneRepository.delete(id);
}
@Transactional
@Override
public void deleteSomeUser(Integer[] ids) {
for (Integer id : ids) {
deleteUser(id);
}
}
我想知道如果这是一种更有效的方法来完成这个动作.
你可以看到我的日志:它似乎不太好!
[94, 95, 91, 92, 93]
Hibernate:
delete
from
sshh_user
where
ID=?
Hibernate:
delete
from
sshh_user
where
ID=?
Hibernate:
delete
from
sshh_user
where
ID=?
Hibernate:
delete
from
sshh_user
where
ID=?
Hibernate:
delete
from
sshh_user
where
ID=?
Hibernate:
select
count(practice0_.ID) as col_0_0_
from
sshh_user …这是存储库：
@Query(value = "select u.balance from User u where u.name=:name")
float toGetBalance(@Param("name") String name);
这是DAO界面：
boolean checkBalance(String userName, float totalPrice);
这是服务
@Transactional(readOnly = true)
@Override
public boolean checkBalance(String userName, float totalPrice) {
if (userRepository.toGetBalance(userName) < totalPrice) {
return false;
} else {
return true;
}
}
这是错误信息：
org.springframework.aop.AopInvocationException: Null return value from advice does not match primitive return type for: public abstract float com.repository.UserRepository.toGetBalance(java.lang.String)
余额类型是浮动的！
怎么了？