今天也遇到这个问题了，这个错误相信大家都知道，因为在hibernate中同一个session里面有了两个相同标识。
page = pageService.findById(this.getPage().getId());
//page中已经有题目，再添加新题目,新的题目在执行之前已经有id
page.addQuestions(quizes);
quizService.createQuestions(quizes);
pageService.modify(page); //更新page
我遇到过几次这样的问题发现每次都是因为我执行顺序的问题，createQuestions后session中已经存在quize，modify的时候，由于page和question是一对多关系，那么更新级联关系的时候，会更新quizs，session中已经存在那个quiz id
page = pageService.findById(this.getPage().getId());
//page中已经有题目，再添加新题目,新的题目在执行之前已经有id
quizService.createQuestions(quizes);
page.addQuestions(quizes);
pageService.modify(page); //更新page
修改后，就好了
今天时间太紧了，先写到这里
分享到：
相关推荐
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...
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`...
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...
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 ...
- When the signal conditioning function "S&M" was used for a byte value, the driver wrote wrong values to the PLC. Build 223 : New Functions: - The number of supported NetLinks has been ...
- 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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
make use of the CAN implementations that are already available on the market, or of new controllers that implement both formats. In order to distinguish standard and extended format the first reserved...
本文介绍Oralce数据库中，表名可以使用的最大长度。这个长度也是Oracle...*Cause: An identifier with more than 30 characters was specified. *Action: Specify at most 30 characters. 从这个错误提示可以看出
Stores a unique identifier for the file, allowing for the identification of files across different volumes. ##### Attribute - $SECURITY_DESCRIPTOR (0x50) Holds security-related information, such as ...