How to use MyBatis?

MyBatis is a persistence layer framework used to map Java objects to databases. Here are the basic steps for using MyBatis:

1. Add dependency: Include MyBatis dependency in the project’s build file, such as Maven’s pom.xml.
2. Configure data source: In the project’s configuration file (such as application.properties), set up database connection information, including database driver, URL, username, and password.
3. Create a mapping file: Create an XML file in the resources directory to define SQL statements and mapping relationships. The mapping file can use tags such as select, insert, update, and delete to define different SQL operations.
4. Create a Java class: create a Java class that corresponds to the database table, where the class properties match the table’s columns.
5. Create a Mapper interface: Establish a Mapper interface that specifies methods corresponding to SQL statements. The parameters and return values of the methods should align with the SQL statements defined in the mapping file.
6. Configure the Mapper interface: In the project configuration file, set up the association between the Mapper interface and the mapping file.
7. Write code: Use the MyBatis API in Java to call Mapper interface methods and execute database operations.
8. Running the program: When the program is executed, MyBatis will automatically perform database operations based on the configuration file and the code calls in the program.

The above are the basic steps to use MyBatis. Depending on the specific project and requirements, other functions of MyBatis can also be utilized, such as dynamic SQL and transaction management.