事务管理器接口PlatformTransactionManager
Spring事务管理中心接口
public interface PlatformTransactionManager{ TransactionStatus getTransaction(@Nullable TransactionDefinition definition) throws TransactionException; void commit(TransactionStatus status) throws TransactionException; void rollback(TransactionStatus status) throws TransactionException;}罕用实现类
事务管理器通常会在我的项目启动时初始化，以HibernateTransactionManager为例
@Bean public HibernateTransactionManager transactionManager() { HibernateTransactionManager transactionManager = new HibernateTransactionManager(); transactionManager.setSessionFactory(sessionFactory().getObject()); return transactionManager; }事务定义TransactionDefinition
定义事务隔离级别与流传行为
public interface TransactionDefinition { int PROPAGATION_REQUIRED = 0; int PROPAGATION_SUPPORTS = 1; int PROPAGATION_MANDATORY = 2; int PROPAGATION_REQUIRES_NEW = 3; int PROPAGATION_NOT_SUPPORTED = 4; int PROPAGATION_NEVER = 5; int PROPAGATION_NESTED = 6; int ISOLATION_DEFAULT = -1; int ISOLATION_READ_UNCOMMITTED = Connection.TRANSACTION_READ_UNCOMMITTED; int ISOLATION_READ_COMMITTED = Connection.TRANSACTION_READ_COMMITTED; int ISOLATION_REPEATABLE_READ = Connection.TRANSACTION_REPEATABLE_READ; int ISOLATION_SERIALIZABLE = Connection.TRANSACTION_SERIALIZABLE; int TIMEOUT_DEFAULT = -1; int getPropagationBehavior(); int getIsolationLevel(); int getTimeout(); boolean isReadOnly(); @Nullable TransactionInterceptor
申明式事务通过办法拦截器关联Spring的事务处理，编程式事务则是通过模板办法TransactionTemplate