How to resolve the issue of Spring annotations not work…

If Spring annotation transaction does not take effect, you can try the following solutions:

1. Make sure the project has been properly configured with a transaction manager. In the Spring configuration file, you need to set up a transaction manager, for example:
2. Create a new bean with the ID “transactionManager” of the class “org.springframework.jdbc.datasource.DataSourceTransactionManager”, and set the property “dataSource” to refer to the bean with the ID “dataSource”.
3. Furthermore, add the @Transactional annotation to the classes or methods that require the use of transactions.
4. It is important to verify if the method has been called correctly. Spring is unable to proxy methods for transaction control if they are called through private methods, internal methods, or reflection. Make sure that the method being called is a public method of a bean managed by the Spring container.
5. Ensure that the Spring annotation transaction is correctly scanned and proxied. Make sure the following configuration is added in the Spring configuration file.
6. 
   
7. “component-scan is used for scanning annotations, while tx:annotation-driven is used to enable annotation-based transaction management.”
8. Confirm whether the correct proxy method is being used. Spring AOP supports two proxy methods: JDK dynamic proxy and CGLIB proxy. By default, if the target class implements an interface, JDK dynamic proxy is used; if the target class does not implement an interface, CGLIB proxy is used. CGLIB proxy can be forced to be used by configuring it, for example:
9. Enable annotation-driven configuration with class-based proxying.

If none of the above methods solve the issue, you can consider checking the logs or debugging the code to further pinpoint the problem.