Multi-Datasource Operations (getEntityManager)
Use eruptDao.getEntityManager("datasource-name") to obtain the EntityManager of a specific data source and run queries against it. See Multiple Data Sources for datasource configuration.
java
@Service
public class EruptJdbc {
@Resource
private EruptDao eruptDao;
public void dbs() {
EntityManager entityManager = eruptDao.getEntityManager("datasource-name");
// Supported since 1.12.13+
eruptDao.lambdaQuery(entityManager, EruptUser.class)
.like(EruptUser::getName, "e")
.min(EruptUser::getCreateTime);
// Note: When operating on multiple data sources, you must close the EntityManager manually.
// Forgetting to call close() will prevent the connection from being returned to the pool,
// eventually exhausting all connections and throwing a connection timeout exception.
entityManager.close();
}
}WARNING
When operating on multiple data sources, always call entityManager.close() manually — otherwise connections are never returned to the pool and will eventually be exhausted.
Contributors
YuePeng
Claude Opus 5 (1M context)