How does MyBatis load mapping files?

2 years ago
William Carter
1 minute

In MyBatis, there are two ways to load mapping files.

  1. configuration file for MyBatis
  2. map creators
<configuration>
  <mappers>
    <mapper resource="com/example/mapper/UserMapper.xml"/>
    <mapper resource="com/example/mapper/OrderMapper.xml"/>
  </mappers>
</configuration>

In the code above, the resource attribute of the element specifies the path to the mapping file. MyBatis will load the corresponding mapping file based on the path information in the configuration file.

  1. I am a mapper.
  2. Choose
  3. Can you please insert the document?
  4. Latest Information
  5. Can you remove that?
@Mapper
public interface UserMapper {
  @Select("SELECT * FROM users")
  List<User> getAllUsers();
}

The @Mapper annotation in the code above notifies MyBatis that this is a DAO interface and that mapping files need to be loaded. MyBatis will use the annotation information in the interface to generate the corresponding SQL statements and execute the appropriate database operations.

Both methods can be used simultaneously or individually, depending on the project requirements and personal preferences. Choose the appropriate way to load mapping files according to the needs of the project and individual preference.

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