【发布时间】：2011-04-27 14:23:01
【问题描述】：
当我第一次插入表时（在删除/创建我的数据库之后），我收到了键“PRIMARY”的重复条目“1”错误。这会导致回滚。如果我再次执行，则插入行确定。谁能向我解释为什么/我做错了什么？
我有一个用户类（预填充在数据库中），它附有一个任务列表。数据库有表用户、用户任务和任务
User.hbm 包含
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="increment" />
</id>
<list name="tasks" cascade="all" table="user_tasks" lazy="false">
<key column="user_id"/>
<index column="id"/>
<many-to-many column="task_id" class="com.some.package.classes.Task"/>
</list>`
Task.hbm 包含
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="increment" />
</id>
<list name="users" cascade="all" table="user_tasks" lazy="false"
inverse="false">
<key column="task_id"/>
<index column="id"/>
<many-to-many column="user_id" class="com.some.packageclasses.User"/>
</list>
显示 2 个日志（用于不工作然后工作）
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, id, task_id) values (?, ?, ?)
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
14:39:16,490 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:16,490 DEBUG SQL:111 - insert into user_tasks (user_id, id, task_id) values (?, ?, ?)
14:39:16,490 TRACE IntegerType:151 - binding '1' to parameter: 1
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, id, task_id) values (?, ?, ?)
14:39:16,491 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
14:39:16,491 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:16,491 DEBUG SQL:111 - insert into user_tasks (user_id, id, task_id) values (?, ?, ?)
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, id, task_id) values (?, ?, ?)]
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, id, task_id) values (?, ?, ?)
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, id, task_id) values (?, ?, ?)
14:39:40,544 TRACE IntegerType:151 - binding '1' to parameter: 1
14:39:40,545 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, id, task_id) values (?, ?, ?)
14:39:40,545 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, id, task_id) values (?, ?, ?)
14:39:40,546 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
14:39:40,546 DEBUG AbstractBatcher:248 - reusing prepared statement
14:39:40,547 DEBUG SQL:111 - insert into user_tasks (user_id, id, task_id) values (?, ?, ?)
14:39:40,547 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) (open ResultSets: 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
【问题讨论】：
-
只是想知道。为什么选择使用 xml 配置而不是注解？还是这是一个遗留项目？
-
我对此很陌生。我已经使用 MyEclipse 生成了休眠层。