技術標籤：Spring

事務註解轉換器

說白了就是該介面的實現會將@Transactional註解轉換成TransactionAttribute
，該介面只有一個抽象方法

@Nullable
TransactionAttribute parseTransactionAnnotation(AnnotatedElement ae);

其中SpringTransactionAnnotationParser類是該介面的實現之一，下面以該類作為演示

import org.springframework.transaction.annotation.Propagation;
import org.
 
springframework.transaction.annotation.Transactional;

@Transactional(propagation = Propagation.REQUIRED)
public class Class01 {

	@Transactional(propagation = Propagation.NEVER)
	public void m1() {
	}

	public static void main(String[] args) throws NoSuchMethodException, SecurityException {
		SpringTransactionAnnotationParser tap =
 
 new SpringTransactionAnnotationParser();
		Class<?> clazz = Class01.class;
		Method method = Class01.class.getMethod("m1");
		TransactionAttribute ta1 = tap.parseTransactionAnnotation(clazz);
		TransactionAttribute ta2 = tap.parseTransactionAnnotation(method);
		System.out.println(ta1)
 
;
		System.out.println(ta2);
	}
}