What is the global id generation strategy for Mybatis-plus
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Mybatis-plus Global id Generation Strategy
After adding the following code to the configuration file, you do not need to add it to the id of the entity class.
@ TableId (value = "id", type = IdType.AUTO) mybatis-plus: global-config: db-config: id-type: auto # set primary key automatic generation strategy (global id generation strategy) Summary of Mybatis-plus6 primary key generation strategy / * database ID self-increment, database needs to support primary key self-increment (such as MySQL) And set the primary key self-increment * / AUTO (0), / * this type is not set primary key type, the default is generated by snowflake algorithm (snowflake) / NONE (1), / * the user enters ID, and the data type is consistent with the database *
This type can be populated by registering the auto-fill plug-in yourself.
* / INPUT (2), / * the following three types are automatically populated only when the insert object ID is empty. * / / * globally unique ID (idWorker). Numeric types must also be numeric types in the database, otherwise error will be reported. * mp comes with a policy to generate 19-bit values. Numeric types use this strategy, such as long * / ID_WORKER (3), / * * globally unique ID (UUID). (no dash) * unique value for each generation * disadvantage: sorting is not convenient * / UUID (4), / * string globally unique ID (string representation of idWorker), database should also ensure the same character type * mp has its own strategy, generate 19-bit value string type using this strategy * / ID_WORKER_STR (5)
Directly annotate the primary key field of the entity class to configure which strategy to use
For example:
@ TableId (type = IdType.ID_WORKER_STR) private String id; above is the content of this article on "what is the global id generation strategy for Mybatis-plus?". I believe you all have some understanding. I hope the content shared by the editor will be helpful to you. If you want to learn more about the relevant knowledge, please follow the industry information channel.
