What are the different methods of managing transactions in Spring?

There are several ways to manage transactions in Spring.

1. Transactional management through coding, mainly utilizing TransactionTemplate or PlatformTransactionManager interfaces for managing transactions.
2. Declarative transaction management involves managing transactions through annotations or XML configurations at the method or class level, primarily using the @Transactional annotation or configuring transaction attributes with the tx:advice element.
3. Annotation-driven transaction management: Using the @Transactional annotation to indicate which methods or classes require transaction management, Spring will automatically add transaction management functionality to these methods or classes.
4. Transaction management configured in XML: Through the configuration of tx:advice and tx:attributes elements in the XML configuration files, transaction management can specify properties such as propagation behavior, isolation level, and timeout.
5. Declarative transaction management: By configuring transaction managers and data sources in the Spring configuration file, then injecting them into the objects that require transaction management, the objects themselves will be in charge of managing transactions.
6. JDBC transaction management in Spring can be done explicitly using beginTransaction(), commit(), and rollback() methods with JdbcTemplate or NamedParameterJdbcTemplate.

These methods can be chosen according to specific needs and situations for transaction management.