Spring-tx-TransactionAnnotationParser接口

事务注解转换器

说白了就是该接口的实现会将@Transactional注解转换成TransactionAttribute
，该接口只有一个抽象方法

@Nullable
TransactionAttribute parseTransactionAnnotation(AnnotatedElement ae);

其中SpringTransactionAnnotationParser类是该接口的实现之一，下面以该类作为演示

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);
	}
}