java – Hibernate在第一次插入表时,键’PRIMARY’的重复条目’1′

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当我第一次插入表格时(在删除/创建我的数据库之后),我收到错误重复条目’1′,用于键’PRIMARY’.这会导致回滚.如果我再次执行行插入OK.任何人都可以向我解释为什么/我做错了什么？

我有一个用户类(在数据库中预先填充),它有一个附加到它的任务列表. db具有表用户,用户任务和任务

User.hbm包含

Task.hbm包含

2个日志显示(不工作然后工作)

r:1112 - Inserting collection: [com.some.package.classes.User.tasks#1]
14:39:16,488 DEBUG AbstractBatcher:410 - about to open PreparedStatement (open PreparedStatements: 0,globally: 0)
14:39:16,489 DEBUG sql:111 - insert into user_tasks (user_id,id,task_id) values (?,?,?)    
14:39:16,489 TRACE AbstractBatcher:513 - preparing statement
14:39:16,489 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:16,489 TRACE IntegerType:151 - binding '0' to parameter: 2
14:39:16,490 TRACE IntegerType:151 - binding '1' to parameter: 3
14:39:16,490 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:16,490 DEBUG sql:111 - insert into user_tasks (user_id,?)
14:39:16,490 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:16,490 TRACE IntegerType:151 - binding '1' to parameter: 2
14:39:16,490 TRACE IntegerType:151 - binding '2' to parameter: 3
14:39:16,491 TRACE IntegerType:151 - binding '2' to parameter: 2
14:39:16,491 TRACE IntegerType:151 - binding '3' to parameter: 3
14:39:16,491 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:16,491 DEBUG sql:111 - insert into user_tasks (user_id,491 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:16,491 TRACE IntegerType:151 - binding '3' to parameter: 2
14:39:16,491 TRACE IntegerType:151 - binding '4' to parameter: 3
14:39:16,492 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:16,492 TRACE IntegerType:151 - binding '4' to parameter: 2
14:39:16,492 TRACE IntegerType:151 - binding '5' to parameter: 3
14:39:16,492 DEBUG AbstractCollectionPersister:1194 - done inserting collection: 5 rows inserted
14:39:16,493 DEBUG AbstractBatcher:66 - Executing batch size: 5
14:39:16,510 DEBUG AbstractBatcher:418 - about to close PreparedStatement (open PreparedStatements: 1,globally: 1)
14:39:16,511 TRACE AbstractBatcher:562 - closing statement
14:39:16,515 DEBUG JDBCExceptionReporter:92 - Could not execute JDBC batch update [insert into user_tasks (user_id,?)]
java.sql.BatchUpdateException: Duplicate entry '1' for key 'PRIMARY'
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
    at com.MysqL.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:171)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
    at com.some.package.TimeMgmt.submitTasks(TimeMgmt.java:165)
    at com.some.package.TimeMgmt.main(TimeMgmt.java:228)
Caused by: com.MysqL.jdbc.exceptions.jdbc4.MysqLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.MysqL.jdbc.Util.handleNewInstance(Util.java:407)
    at com.MysqL.jdbc.Util.getInstance(Util.java:382)
    at com.MysqL.jdbc.sqlError.createsqlException(sqlError.java:1039)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3603)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3535)
    at com.MysqL.jdbc.MysqLIO.sendCommand(MysqLIO.java:1989)
    at com.MysqL.jdbc.MysqLIO.sqlQueryDirect(MysqLIO.java:2150)
    at com.MysqL.jdbc.ConnectionImpl.execsql(ConnectionImpl.java:2626)
    at com.MysqL.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119)
    at com.MysqL.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2415)
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1976)
    ... 12 more
14:39:16,518  WARN JDBCExceptionReporter:100 - sql Error: 1062,sqlState: 23000
14:39:16,518 ERROR JDBCExceptionReporter:101 - Duplicate entry '1' for key 'PRIMARY'
14:39:16,519 ERROR AbstractFlushingEventListener:324 - Could not synchronize database state with session
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
    at org.hibernate.exception.sqlStateConverter.convert(sqlStateConverter.java:94)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:171)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
    at com.some.package.TimeMgmt.submitTasks(TimeMgmt.java:165)
    at com.some.package.TimeMgmt.main(TimeMgmt.java:228)
Caused by: java.sql.BatchUpdateException: Duplicate entry '1' for key 'PRIMARY'
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
    at com.MysqL.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
    ... 9 more
Caused by: com.MysqL.jdbc.exceptions.jdbc4.MysqLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.MysqL.jdbc.Util.handleNewInstance(Util.java:407)
    at com.MysqL.jdbc.Util.getInstance(Util.java:382)
    at com.MysqL.jdbc.sqlError.createsqlException(sqlError.java:1039)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3603)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3535)
    at com.MysqL.jdbc.MysqLIO.sendCommand(MysqLIO.java:1989)
    at com.MysqL.jdbc.MysqLIO.sqlQueryDirect(MysqLIO.java:2150)
    at com.MysqL.jdbc.ConnectionImpl.execsql(ConnectionImpl.java:2626)
    at com.MysqL.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119)
    at com.MysqL.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2415)
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1976)
    ... 12 more
14:39:16,519 TRACE ConnectionManager:501 - registering flush end
14:39:16,519 DEBUG JDBCTransaction:186 - rollback
14:39:16,521 DEBUG JDBCTransaction:197 - rolled back JDBC Connection
14:39:16,522 TRACE JDBCContext:242 - after transaction completion
14:39:16,522 DEBUG ConnectionManager:427 - aggressively releasing JDBC connection
14:39:16,522 DEBUG ConnectionManager:464 - releasing JDBC connection [ (open PreparedStatements: 0,globally: 0) (open ResultSets: 0,globally: 0)]
14:39:16,522 TRACE DriverManagerConnectionProvider:152 - returning connection to pool,pool size: 1
14:39:16,522 TRACE SessionImpl:450 - after transaction completion
14:39:16,525 TRACE SessionImpl:301 - closing session
14:39:16,526 TRACE ConnectionManager:398 - connection already null in cleanup : no action
Exception in thread "main" org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
    at org.hibernate.exception.sqlStateConverter.convert(sqlStateConverter.java:94)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:171)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1028)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:366)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:137)
    at com.some.package.TimeMgmt.submitTasks(TimeMgmt.java:165)
    at com.some.package.TimeMgmt.main(TimeMgmt.java:228)
Caused by: java.sql.BatchUpdateException: Duplicate entry '1' for key 'PRIMARY'
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:2024)
    at com.MysqL.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1449)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
    ... 9 more
Caused by: com.MysqL.jdbc.exceptions.jdbc4.MysqLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.MysqL.jdbc.Util.handleNewInstance(Util.java:407)
    at com.MysqL.jdbc.Util.getInstance(Util.java:382)
    at com.MysqL.jdbc.sqlError.createsqlException(sqlError.java:1039)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3603)
    at com.MysqL.jdbc.MysqLIO.checkErrorPacket(MysqLIO.java:3535)
    at com.MysqL.jdbc.MysqLIO.sendCommand(MysqLIO.java:1989)
    at com.MysqL.jdbc.MysqLIO.sqlQueryDirect(MysqLIO.java:2150)
    at com.MysqL.jdbc.ConnectionImpl.execsql(ConnectionImpl.java:2626)
    at com.MysqL.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2119)
    at com.MysqL.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2415)
    at com.MysqL.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1976)
    ... 12 more



>14:39:40,542 DEBUG AbstractCollectionPersister:1112 - Inserting collection: [com.some.package.classes.User.tasks#1]
14:39:40,542 DEBUG AbstractBatcher:410 - about to open PreparedStatement (open PreparedStatements: 0,globally: 0)
14:39:40,543 DEBUG sql:111 - insert into user_tasks (user_id,?)
14:39:40,543 TRACE AbstractBatcher:513 - preparing statement
14:39:40,544 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:40,544 TRACE IntegerType:151 - binding '0' to parameter: 2
14:39:40,544 TRACE IntegerType:151 - binding '1' to parameter: 3
14:39:40,544 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:40,544 DEBUG sql:111 - insert into user_tasks (user_id,545 TRACE IntegerType:151 - binding '1' to parameter: 2
14:39:40,545 TRACE IntegerType:151 - binding '2' to parameter: 3
14:39:40,545 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:40,545 DEBUG sql:111 - insert into user_tasks (user_id,545 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:40,545 TRACE IntegerType:151 - binding '2' to parameter: 2
14:39:40,546 TRACE IntegerType:151 - binding '3' to parameter: 3
14:39:40,546 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:40,546 DEBUG sql:111 - insert into user_tasks (user_id,546 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:40,546 TRACE IntegerType:151 - binding '3' to parameter: 2
14:39:40,546 TRACE IntegerType:151 - binding '4' to parameter: 3
14:39:40,547 DEBUG sql:111 - insert into user_tasks (user_id,547 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:40,548 TRACE IntegerType:151 - binding '4' to parameter: 2
14:39:40,548 TRACE IntegerType:151 - binding '5' to parameter: 3
14:39:40,548 DEBUG AbstractCollectionPersister:1194 - done inserting collection: 5 rows inserted
14:39:40,548 DEBUG AbstractBatcher:66 - Executing batch size: 5
14:39:40,550 DEBUG AbstractBatcher:418 - about to close PreparedStatement (open PreparedStatements: 1,globally: 1)
14:39:40,550 TRACE AbstractBatcher:562 - closing statement
14:39:40,551 TRACE ConnectionManager:501 - registering flush end
14:39:40,551 TRACE AbstractFlushingEventListener:344 - post flush
14:39:40,551 TRACE JDBCContext:228 - before transaction completion
14:39:40,551 TRACE SessionImpl:421 - before transaction completion
14:39:40,559 DEBUG JDBCTransaction:147 - committed JDBC Connection
14:39:40,559 TRACE JDBCContext:242 - after transaction completion
14:39:40,559 DEBUG ConnectionManager:427 - aggressively releasing JDBC connection
14:39:40,560 DEBUG ConnectionManager:464 - releasing JDBC connection [ (open PreparedStatements: 0,globally: 0)]
14:39:40,560 TRACE DriverManagerConnectionProvider:152 - returning connection to pool,pool size: 1
14:39:40,560 TRACE SessionImpl:450 - after transaction completion
14:39:40,560 TRACE SessionImpl:301 - closing session
最佳答案
如果你有多个进程写入同一个表,增量肯定是坏的 – 你一定会发生冲突.

所以使用< generator class =“identity”/>并尝试.

原文链接：https://www.f2er.com/java/437832.html
hibernate

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