How to integrate MyBatis for accessing the database in Spring Boot?

To integrate MyBatis for database access in Spring Boot, you can follow these steps:

1. Add Dependencies: Include MyBatis and the necessary database driver dependencies in the `pom.xml` file. For example, if you are using a MySQL database, you can add the following dependency:

    
    
        org.mybatis.spring.boot
        mybatis-spring-boot-starter
        2.1.4
    
    
    
        mysql
        mysql-connector-java
        8.0.23
    

2. Setting up data source: Configure database connection information in the `application.properties` (or `application.yml`) file. For example, for MySQL database, you can add the following configuration:

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=username
spring.datasource.password=password
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver

3. Generate MyBatis mapping files: Create a MyBatis mapping file in the `resources` directory (usually with a `.xml` extension) and write SQL statements. You can define database operations using either annotations or XML. For example, create a `UserMapper.xml` file and define some CRUD operations’ SQL statements.

4. Create Mapper interface: Create a Mapper interface corresponding to the MyBatis mapping file, which is used to define methods for database operations. For example, create a ‘UserMapper’ interface and define methods within the interface.

5. Add Mapper scanning: Add the annotation `@MapperScan(“com.example.mapper”)` to the main configuration class in Spring Boot, specifying the package path where the Mapper interfaces are located.

6. Performing database operations with MyBatis: To access the database, use MyBatis to interact with it by autowiring the Mapper interface. For example, inject the `UserMapper` interface in the Service layer and call its methods to perform database operations.

By following these steps, you will be able to successfully integrate MyBatis in Spring Boot and use it to access the database. Please note that the above steps are a common practice and the specific implementation may vary depending on your project structure and personal preferences.