java – WinXP和Mac OS X中的MySql
作者：互联网
我正面临着这个奇怪的问题.
我正在Win XP中的机器上编码,然后将所有代码移动到Mac OS X机器上.
使用XP机器的罐子运行它.
我在java中编码并使用hibernate进行数据库处理.
不知何故,我无法插入一行,而键是使用增量生成器类生成的.我也在Mac上试过原生但同样的错误.
这是调试模式.现在,我知道错误是一个关键违规,但在WinXP中不会发生同样的错误.我在运行代码之前截断了我的数据库.我认为他们是Mac中的一些生成器类依赖.还是其他一些罐子？
以下是一些细节：
> Mac OS X 10.5(x86_64)
> MYSQL 5.1.35社区服务器
> mysql-connector-java-5.1.7-bin.jar JDBC驱动程序
> Java(TM)2运行时环境,标准版(版本1.5.0_16-b06-284)
> Java HotSpot(TM)客户端VM(版本1.5.0_16-133,混合模式,共享)
请指教
2009-06-20 18:43:01,230 DEBUG [org.hibernate.type.IntegerType] - binding '11266' to parameter: 2
2009-06-20 18:43:01,230 DEBUG [org.hibernate.type.IntegerType] - binding '332' to parameter: 3
2009-06-20 18:43:01,281 DEBUG [org.hibernate.type.IntegerType] - binding '6' to parameter: 4
2009-06-20 18:43:01,281 DEBUG [org.hibernate.persister.entity.AbstractEntityPersister] - Inserting entity: [org.joshua.hibernate.dto.Pagedatecounts#289]
2009-06-20 18:43:01,281 DEBUG [org.hibernate.jdbc.AbstractBatcher] - Executing batch size: 1
2009-06-20 18:43:01,288 DEBUG [org.hibernate.jdbc.AbstractBatcher] - about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
2009-06-20 18:43:01,288 DEBUG [org.hibernate.jdbc.AbstractBatcher] - closing statement
2009-06-20 18:43:01,289 DEBUG [org.hibernate.util.JDBCExceptionReporter] - Could not execute JDBC batch update [insert into wiki.page (langId, titleId, totalCounts, id) values (?, ?, ?, ?)]
java.sql.BatchUpdateException: Duplicate entry '1-11266' for key 'Page_lang_title'
at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1693)
at com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1108)
at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
at org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:92)
at org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
at org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:222)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2224)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2660)
at org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:56)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
at org.joshua.hibernate.dao.PageDAO.batchSave(PageDAO.java:70)
at org.joshua.businesservice.PageServiceImpl.savePageDateCountBatch(PageServiceImpl.java:61)
at org.joshua.wikidumps.DumpHandler.endElement(DumpHandler.java:192)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:176)
at org.joshua.wikidumps.PagesByNumberOfRecentEdits.execute(PagesByNumberOfRecentEdits.java:107)
at org.joshua.wikidumps.PagesByNumberOfRecentEdits_ur.main(PagesByNumberOfRecentEdits_ur.java:19)
2009-06-20 18:43:01,290 WARN [org.hibernate.util.JDBCExceptionReporter] - SQL Error: 1062, SQLState: 23000
2009-06-20 18:43:01,290 ERROR [org.hibernate.util.JDBCExceptionReporter] - Duplicate entry '1-11266' for key 'Page_lang_title'
2009-06-20 18:43:01,290 ERROR [org.hibernate.event.def.AbstractFlushingEventListener] - Could not synchronize database state with session
org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
解决方法:
没有什么可以继续,但这是我能做到的：
>违反的唯一键是标题和语言列上的组合键. (从名称(Page_lang_title,其中lang_id和title_id是列名称)和堆栈跟踪中显示的密钥值(1-11266,实际上是两个值的组合)来判断.
>您维护页面(请求？)计数维基页面.这当然容易出现并发问题,因为多个线程(请求)同时访问同一页面.
>您可能正在进行批量更新(或其他内容)并且您已经点击了相同的< lang_id,title_id>两次组合.你的逻辑就像是“来自Page,page_id =？和lang_id =？”由于您在同一事务中运行批处理并在事务同步后使用hibernate,因此只有在您提交事务后才会处理表上的插入,因此您尝试两次插入相同的lang_id和page_id组合.
现在你可以做一些事情：
>确保Hibernate的AUTO_FLUSH模式正常工作,因此只要在对此表进行查询之前需要插入新实体,就会刷新会话.为了使其按预期工作,您必须确保Hibernate知道已启动的事务.
>维护自己的每个事务创建的Pagedatecount缓存,并在使用Hibernate检查数据库之前进行查询.
想一想：Pagedatecount实体是不是缺少日期列？它似乎没有被插入.
标签：java,mysql,hibernate,macos,mysql-error-1062 来源： https://codeday.me/bug/20190705/1386354.html