在mysql中插入数据时重复主键错误答案

【问题标题】：Duplicate primary key error while inserting data in mysql在mysql中插入数据时重复主键错误
【发布时间】：2015-06-22 14:09:58
【问题描述】：

我正在使用 JPA 在 mysql 数据库中插入数据，但出现此错误！

Query: InsertObjectQuery(eu.telecombretagne.loraFabian.KPI.KPI@7a363633)
javax.persistence.RollbackException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO ReceivedPacketsStats (id, CodeRate, DataRate, Frequency, Signalisation, Lsnr, NodeMacAddress, MessageID, Modulation, Nature, Rssi, Size, Status, Time, timestamp, TypeMessage) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    bind => [16 parameters bound]
Query: InsertObjectQuery(eu.telecombretagne.loraFabian.KPI.KPI@7a363633)
    at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:157)
    at eu.telecombretagne.loraFabian.KPI.KPI.persist(KPI.java:138)
    at eu.telecombretagne.loraFabian.KPI.KPI.<init>(KPI.java:126)
    at eu.telecombretagne.loraFabian.nodeK.PacketFormatConverter.handleStats(PacketFormatConverter.java:275)
    at eu.telecombretagne.loraFabian.nodeK.PacketFormatConverter.NodeKPipePacket2RawData(PacketFormatConverter.java:77)
    at eu.telecombretagne.loraFabian.LoraNodeKConnector.receive(LoraNodeKConnector.java:108)
    at eu.telecombretagne.loraFabian.nodeK.NodeKPipe.receive(NodeKPipe.java:111)
    at eu.telecombretagne.loraFabian.nodeK.tunnel.TunnelPipe.receive(TunnelPipe.java:103)
    at eu.telecombretagne.loraFabian.nodeK.tunnel.UpstreamTunnel.filter(UpstreamTunnel.java:82)
    at eu.telecombretagne.loraFabian.nodeK.tunnel.AbstractTunnel$Filterer.work(AbstractTunnel.java:263)
    at eu.telecombretagne.loraFabian.nodeK.tunnel.AbstractTunnel$Worker.run(AbstractTunnel.java:237)
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO ReceivedPacketsStats (id, CodeRate, DataRate, Frequency, Signalisation, Lsnr, NodeMacAddress, MessageID, Modulation, Nature, Rssi, Size, Status, Time, timestamp, TypeMessage) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
    bind => [16 parameters bound]
Query: InsertObjectQuery(eu.telecombretagne.loraFabian.KPI.KPI@7a363633)
    at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:331)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:900)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:962)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:631)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:558)
    at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:2002)
    at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:298)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:242)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:228)
    at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.insertObject(DatasourceCallQueryMechanism.java:377)
    at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:165)
    at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:180)
    at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.insertObjectForWrite(DatabaseQueryMechanism.java:489)
    at org.eclipse.persistence.queries.InsertObjectQuery.executeCommit(InsertObjectQuery.java:80)
    at org.eclipse.persistence.queries.InsertObjectQuery.executeCommitWithChangeSet(InsertObjectQuery.java:90)
    at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:301)
    at org.eclipse.persistence.queries.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:58)
    at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:899)
    at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:798)
    at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:108)
    at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:85)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2896)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1804)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1786)
    at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1737)
    at org.eclipse.persistence.internal.sessions.CommitManager.commitNewObjectsForClassWithChangeSet(CommitManager.java:226)
    at org.eclipse.persistence.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:125)
    at org.eclipse.persistence.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:4207)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1441)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1531)
    at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitRootUnitOfWork(RepeatableWriteUnitOfWork.java:277)
    at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitAndResume(UnitOfWorkImpl.java:1169)
    at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.commit(EntityTransactionImpl.java:132)
    ... 10 more
Caused by: com.mysql.jdbc.exceptions.MySQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'PRIMARY'
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:931)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1631)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1723)
    at com.mysql.jdbc.Connection.execSQL(Connection.java:3256)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1313)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1585)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1500)
    at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1485)
    at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:890)
    ... 41 more
11:03:16.339 [UpstreamTunnel-Filterer-[0]] WARN  eu.telecombretagne.loraFabian.nodeK.tunnel.AbstractTunnel - Exception in UpstreamTunnel-Filterer-[0]
java.lang.IllegalStateException: 
Exception Description: No transaction is currently active
    at org.eclipse.persistence.internal.jpa.transaction.EntityTransactionImpl.rollback(EntityTransactionImpl.java:176) ~[eclipselink.jar:2.5.2.v20140319-9ad6abd]
    at eu.telecombretagne.loraFabian.KPI.KPI.persist(KPI.java:141) ~[classes/:?]
    at eu.telecombretagne.loraFabian.KPI.KPI.<init>(KPI.java:126) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.PacketFormatConverter.handleStats(PacketFormatConverter.java:275) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.PacketFormatConverter.NodeKPipePacket2RawData(PacketFormatConverter.java:77) ~[classes/:?]
    at eu.telecombretagne.loraFabian.LoraNodeKConnector.receive(LoraNodeKConnector.java:108) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.NodeKPipe.receive(NodeKPipe.java:111) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.tunnel.TunnelPipe.receive(TunnelPipe.java:103) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.tunnel.UpstreamTunnel.filter(UpstreamTunnel.java:82) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.tunnel.AbstractTunnel$Filterer.work(AbstractTunnel.java:263) ~[classes/:?]
    at eu.telecombretagne.loraFabian.nodeK.tunnel.AbstractTunnel$Worker.run(AbstractTunnel.java:237) [classes/:?]

帮我解决这个问题，谢谢！

【问题讨论】：

显示给出错误的代码，并格式化问题
你是如何首先生成Id的？
ID 是 JPA 自动生成的值
没错，你用的是什么生成器，比如Tablegenerator，Sequence generator。在数据库中，您已经有一个带有 Id 生成器生成的条目。相应地手动更新生成器，或从数据库中删除条目。
我正在使用序列生成器

标签： java mysql jpa

【解决方案1】：

您传递的对象 ReceivedPacketsStats 的 id 为 1。
但在数据库 ReceivedPacketsStats 表中已经存在 id 为 1 的记录。
这就是它抛出 MySQLIntegrityConstraintViolationException: Duplicate entry '1' 的原因。

【讨论】：

id自动递增，我尝试从数据库中删除数据并执行程序但问题没有解决！
@mounir 请按照以下步骤操作：首先使用 truncate tableName 截断您的表；然后尝试执行你的程序
我试图从数据库中删除数据，但问题没有解决，我从java代码创建表，所以当我运行程序时表是空的
@mounir 在执行你的代码后..你检查过表吗..有多少条记录？？
是的，我尝试只向数据库发送一个数据包，通常我找到 2 条记录（请求和响应）但我只找到了请求，我认为 phpmyadmin 尝试添加响应相同的id

【解决方案2】：

谢谢大家，

我通过删除phpmyadmin中的索引id解决了这个问题！

【讨论】：

【解决方案3】：

您正在明确传递要插入的记录的 id。

您可能正在传递一个已经存在的 id。使用数据库中的数据进行检查。

【讨论】：

确实，这正是问题标题所说的！
id 是 JPA 的 GeneratedValue: Id Column(name="id") GeneratedValue 之后，我在 mysql 数据库中使用 JPA 使用 entityManagerFactory 保存数据