Comprehensively interpret the technical principles of the Java transaction API framework

The Java transaction API framework is a tool for managing and controlling database transactions.It provides a simple and powerful way to ensure the integrity and consistency of data operation.This article will comprehensively interpret the technical principles of the Java transaction API framework and provide relevant Java code examples. In Java, transactions are a set of database operations. These operations are either successfully executed or rolled back.The purpose of the transaction is to convert the database from one state to another.The four main attributes of transactions are atomicity, consistency, isolation, and durability. The technical principles of the Java transaction API framework mainly include the following aspects: 1. Transaction Manager: The transaction manager is the core component of the Java transaction API framework.It is responsible for managing and coordinating the implementation of affairs and ensuring the atomicity and consistency of affairs.The transaction manager provides methods for starting transactions, submission of transactions, rollback transactions. 2. Transaction definition: Affairs definition is an object of describing and configuration of transactions.It contains attributes such as transaction isolation, communication behavior, and timeout.By configured the definition of transactions, the behavior and characteristics of transactions can be flexibly controlled. The following Java code example demonstrates how to define a transaction: import org.springframework.transaction.annotation.Isolation; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; @Transactional(propagation = Propagation.REQUIRED, isolation = Isolation.DEFAULT, timeout = 3600) public void myTransactionMethod() { // Execute the database operation } 3. Transaction aspect: The transaction cutting surface is a special section that associates the transaction manager with the business logic code.By applying transaction cutting surfaces to methods that require transaction management, transaction control of these methods can be achieved. The following Java code example demonstrates how to use transactions in the Spring framework: import org.springframework.transaction.annotation.Transactional; @Transactional public void myTransactionMethod() { // Execute the database operation } 4. Transaction Interceptor: The transaction interceptor is a component that intercepts before and after the method execution.It is responsible for checking whether the current method requires transaction management, and calls the transaction manager to start, submit or roll back the transaction when necessary. The following Java code example demonstrates how to configure transaction interceptors in the Spring framework: <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager" ref="transactionManager" /> <property name="transactionAttributes"> <props> <prop key="myTransactionMethod">PROPAGATION_REQUIRED</prop> </props> </property> </bean> In summary, the Java transaction API framework achieves the management and control of database transactions through components such as transaction manager, transaction definition, transaction cutting, and transaction interceptor.By flexible configuration and using these components, the atomicity, consistency and durability of the data operation can be ensured.The above is a comprehensive interpretation of the technical principle of the Java transaction API framework, and provides the corresponding Java code example.