Java Affairs API framework rolling and abnormal processing strategy

Java Affairs API framework rolling and abnormal processing strategy Overview: During application development, transaction management is a very important concept.The transaction ensures that a set of operations are either successfully completed or rolled back to ensure the consistency of the database and the application.The Java transaction API framework provides a strong set of mechanisms to manage affairs, including rolling and abnormal processing strategies.This article will introduce the rolling and abnormal processing strategies in the Java transaction API framework, and provide the corresponding example code. Rolling strategy: In the Java transaction API framework, you can use different strategies to determine when to roll back.The following is a common rollback strategy: 1. Manual roll: Using manual rollback strategy, developers can roll back the transaction at any time as needed.Generally, when you encounter errors or abnormalities, you can call back and forth all the completed operations.The following is a sample code manually: try { // Starting transaction transaction.begin(); // Execute some operations // Judge a certain condition IF (condition) { // The operation fails, roll back the transaction transaction.rollback(); } else { // Successful operation and submitting transactions transaction.commit(); } } catch (Exception e) { // Abnormal treatment transaction.rollback(); } 2. Automatic rollback: Using automatic rollback strategy, transaction will automatically roll back when abnormalities are encountered.This means that if any statement fails or abnormally occurs, the entire transaction will be rolled back.The following is an example code that rolls back automatically: try { // Starting transaction transaction.begin(); // Execute some operations // Here is abnormal, and the transaction will roll back automatically // ... // Successful operation and submitting transactions transaction.commit(); } catch (Exception e) { // Abnormal treatment transaction.rollback(); } 3. Abnormal rollback: Using abnormal rollback strategy, you can specify that only anomalous abnormalities can trigger transaction rollback.By defining the corresponding abnormal lists in transaction annotations or configurations, it can be rolled back to the specified abnormal type.The following is a sample code that uses abnormal rollback strategies: @Transactional(rollbackFor = {Exception.class}) public void someMethod() { // ... } Abnormal processing strategy: In the Java transaction API framework, abnormal processing strategies are used to determine how to deal with abnormalities in transactions.The following is a common abnormal processing strategy: 1. Ignore anomalies: Using ignoring abnormal strategies, transactions will continue to be executed and ignore the abnormalities encountered.In some cases, you may want to ignore the exceptions of specific types so that transactions can continue to perform other operations.The following is an example code that ignores abnormal abnormalities: @Transactional(noRollbackFor = {Exception.class}) public void someMethod() { // ... } 2. Rolling abnormality: Using rollback abnormal strategies, transactions will be rolled back when abnormalities are encountered.This is the default abnormal processing strategy, and any unrelated exception will trigger the transaction to roll back.The following is an example code that rolls abnormal: @Transactional(rollbackFor = {Exception.class}) public void someMethod() { // ... } Summarize: The Java transaction API framework provides a variety of rollbacks and abnormal processing strategies. Developers can choose suitable strategies according to specific needs.Manual rollback, automatic rollback, and abnormal rollback are common rollback strategies, and ignoring abnormalities and rolling abnormalities are common abnormal treatment strategies.Through reasonable selection and configuration of these strategies, it can ensure the correct execution of transactions in the application and deal with possible abnormalities. Please note that the example code is only for explanation, and it may need to adapt to specific situations to modify in practical applications.