postgresqlでhibernateを使用していますが、トランザクションエラーが発生しています。 SNAME現在のトランザクションが中止され、休止状態のpostgresqlのトランザクションブロックが終了するまでコマンドが無視される
すべてのヘルプは高く評価され|
SNO(PK):
public class AppControl {
public static void main(String[] args) {
//Configuration
Configuration configuration = new Configuration();
configuration.configure("hibernate.cfg.xml");
Session session = null;
Transaction transaction = null;
//Session Factory
SessionFactory sessionFactory = configuration.buildSessionFactory();
try {
//Session
session = sessionFactory.openSession();
//Begin transaction
transaction = session.beginTransaction();
//DB operations
Student student = new Student();
student.setSno(2);
student.setSname("Venky");
session.save(student);
session.flush();
transaction.commit();
}catch (RuntimeException e) {
try {
session.flush();
transaction.rollback();
}catch(Exception ex) {
System.out.println("Cannot rollback transaction");
}
} finally {
session.close();
sessionFactory.close();
}
}
}
私はこれは私の学生のテーブルで、次のエラーに
Exception in thread "main" org.hibernate.exception.GenericJDBCException: could not execute statement
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:190)
at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:62)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3124)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3581)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:103)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:461)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:347)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1222)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
at com.demo.app.AppControl.main(AppControl.java:32)
Caused by: org.postgresql.util.PSQLException: ERROR: current transaction is aborted, commands ignored until end of transaction block
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2102)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1835)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:500)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:334)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:187)
... 13 more
が発生します。これが私のメインアプリです。ありがとうございました
この例を見てきました(例:https://www.mkyong.com/hibernate/hibernate-transaction-handle-example/) –
私はこのスタックトレースにもっとあると思いますか? –
これは、生徒に 'zip'と' course_no'を設定しないことによって引き起こされる可能性がありますか? – tima