Creating a new SqlSession

To create a new SqlSession in Java, you typically need to first create a new instance of a SqlSessionFactory. The SqlSessionFactory is responsible for creating SqlSession objects, which in turn are used to interact with the database.

Here is some sample code to create a new SqlSession:

// Create a configuration object
Configuration configuration = new Configuration();

// Configure the data source
DataSource dataSource = ... // create or obtain a data source
configuration.setDataSource(dataSource);

// Add mappers (optional)
configuration.addMapper(MyMapper.class);

// Create a SqlSessionFactory
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);

// Open a new session
SqlSession sqlSession = sqlSessionFactory.openSession();

In this example, we first create a new Configuration object and configure it with a data source and any mappers that we want to use. We then use a SqlSessionFactoryBuilder to build a new SqlSessionFactory from the configuration.

Finally, we can use the SqlSessionFactory to open a new SqlSession. The SqlSession is typically used to execute SQL statements and manage transactions.