Org. hibernate. id. IdentifierGenerationException error solution, org. hibernate

Org. hibernate. id. IdentifierGenerationException error solution, org. hibernate

Org. hibernate. id. IdentifierGenerationException: ids for this class must be manually assigned before calling save ():

ID Primary Key Generation Policy is assigned. The application is responsible for generating primary key identifiers.

<Id name = "id" type = "java. lang. string "> <column name =" ID "length =" 32 "/> <generator class =" assigned "/> </id>

The ID is not set when saving.

Session. save (entity );

This error occurs.

Solution:

1. manually set an ID when saving:

Entity. setId (UUID. randomUUID (). toString (); session. save (entity );

2. Modify the primary key generation policy to another

Author: itmyhome

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