`
一场雨
  • 浏览: 48664 次
  • 性别: Icon_minigender_2
  • 来自: 深圳
社区版块
存档分类
最新评论

a different object with the same identifier value

阅读更多

在用AJAX做分页时碰到的错误,使用Hibernate持久层

a different object with the same identifier value was already associated with the session: 在hibernate中同一个session里面有了两个相同标识但是是不同实体。 

 
在使用AJAX时出现的,在页面初始化时从数据库中读出数据,使用Hibernate,然后删除部分数据,删除时总是出错
用TEST调试,也检查不出问题,后来发现是:
原因是在执行查询过程中,没有关闭Session.close,就执行删除操作,
解决方法:在select 的方法中,加入session.close()的方法;即可完成;

分享到:
评论

相关推荐

    hibernate常见异常

    a different object with the same identifier value was already associated with the session 是一种常见的异常,通常是由于在 Hibernate 中同一个 session 里面有了两个相同标识但是是不同实体所致。解决方案有...

    hibernate常见问题及处理.doc

    5. `a different object with the same identifier value was already associated with the session` 这个异常表明在同一个Hibernate Session中存在两个具有相同标识但实际是不同对象的情况。处理方法有: - 使用`...

    The Digital Object Identifier initiative: metadata implications

    数字对象标识符(Digital Object Identifier,简称DOI)是一种持久性标识符,用于唯一地标识数字资源,如学术文章、数据集等。DOI系统由国际DOI基金会管理,并在出版界广泛采用。随着数字资源的增加以及对资源描述的...

    计算机网络第六版答案

    In these systems, packets are transmitted over the same wireless infrastructure used for cellular telephony, with the base station thus being managed by a telecommunications provider. This provides ...

    FlexGraphics_V_1.79_D4-XE10.2_Downloadly.ir

    - FIX: The value of some string flex-properties that began with a parenthese or curly bracket had no apostrophe at the end; that caused an error when reading. (fixed TPropList.SavePropValue for the ...

    微软内部资料-SQL性能优化5

    Each index row in node pages contains an index key (or set of keys for a composite index) and a pointer to a page at the next level for which the first key value is the same as the key value in the ...

    S7A驱动720版本

    - The driver can now be registered as a service with the local system account as the log-on account. For more information see the document "S7A_as_Service.PDF" on the installation CD . - The ...

    NewSID(光学习一下代码就可以了,没看清楚介绍别运行)

    When the SID is found in a value it is replaced with the new computer SID, and when the SID is found in a name, the key and its subkeys are copied to a new subkey that has the same name except with ...

    微软内部资料-SQL性能优化3

    Another type of table lock is a schema stability lock (Sch-S) and is compatible with all table locks except the schema modification lock (Sch-M). The schema modification lock (Sch-M) is incompatible ...

    高性能消息传输机制Aeron.zip

    two and must be the same length on both ends.Term ID: A unique identifier for a Term within a Stream. Starts randomly. Must increase monotonically. Can wrap around. Can not go back to a wrapped ...

    servlet2.4doc

    Adds a response header with the given name and value. addIntHeader(String, int) - Method in class javax.servlet.http.HttpServletResponseWrapper The default behavior of this method is to call ...

    developing android application with adobe air.part3.rar

    EXIF Data and the Map Object The speed Property Conclusion Chapter 11 : Microphone and Audio The Microphone Audio Assets Working with Sounds ID3 Tags Modifying Sound Raw Data and the Sound Spectrum ...

    windows程序设计

    created with the default settings in Microsoft Visual C++ 6 with one major exception: aside from other compiler and linker flags, the executable in the DEBUG directory has been compiled with the ...

    Devart LinqConnect 3.1

    The "Identifier Case Sensitive" check box, which enables case-sensitive processing of database object identifier names, is added to MySQL Server Options The documentation generation for Enum members ...

    VclZip pro v3.10.1

    This was due to a problem where it would be freed automatically if there was a problem with the ArchiveStream when trying to open it as a zip file (possibly corrupt). Best practice is that ...

    DEV控件客户端代码

    Value: The fully-qualified identifier for the control. /// /// ///Occurs on the client side after the control has been initialized but prior to it being displayed within the browser. /// };

    libtomcrypt-1.17

    ASN.1 DER for SEQUENCE, INTEGER, BIT STRING, OCTET STRING, OBJECT IDENTIFIER, IA5 STRING, PRINTABLE STRING, UTCTIME, CHOICE and NULL types. Portable code builds out of the box with a conforming C ...

    查看进程工具tlist.exe

    ProcessName is the name of the process (with or without file name extension), not a pattern. If the value of ProcessName does not match any running process, TList displays -1. If it matches more ...

    Hibernate Tutorial 03 (Object Identifier).pdf

    在本教程中,我们将深入探讨Hibernate框架中的一个核心概念——对象标识符(Object Identifier)。通过本篇教程的学习,您将了解到对象标识符在Hibernate中的重要性以及如何正确地为持久化对象设置标识符。此外,我们...

Global site tag (gtag.js) - Google Analytics