我正在尝试使用Spring提供的默认aop代理,但出现执行错误。
这是我的代码: 运行测试示例的第一堂课。
@EnableAspectJAutoProxy()
@ComponentScan(basePackageClasses = {MyDaoRepository.class, MyService.class,MyAdvices.class})
@Configuration
public class SpringAdvices {
public static void main( String[] args ) {
ApplicationContext ctx = new AnnotationConfigApplicationContext(SpringAdvices.class);
service myService = ctx.getBean(MyService.class);
Person p1 = (Person) ctx.getBean("person");
myService.save(p1);
}
@Bean
public Person person(){
return Person.builder()
.name("Bagna")
.age(52)
.profession(null)
.dateOfBirth(LocalDate.of(1950,12,13))
.build();
}
}
代表我的建议的第二堂课:
@Aspect
@Component
public class MyAdvices {
@Before("execution(boolean *.dao.save(..))")
public void beforesavamethod(){
System.out.println("beforesavamethod");
}
@After("execution(boolean *.dao.save(..))")
public void aftersavamethod(){
System.out.println("aftersavamethod");
}
}
我的服务和存储库类:
@Service
public class MyService implements service {
@Autowired
MyDaoRepository myDaoRepository;
@Override
public boolean save( Person person ){
return this.myDaoRepository.save(person);
}
@Override
public boolean delete(Person person){
return this.myDaoRepository.delete(person);
}
}
public interface service {
public boolean save( Person person );
public boolean delete( Person person );
}
@Repository
public class MyDaoRepository implements dao {
List<Person> personList = new ArrayList<>();
@Override
public boolean save( Person person ){
return this.personList.add(person);
}
@Override
public boolean delete( Person person ){
return this.personList.remove(person);
}
}
public interface dao {
public boolean save( Person person );
public boolean delete( Person person );
}
除了我担心将dao对象注入服务对象之外。
UnsatisfiedDependencyException:创建名称为bean的错误 'myService':通过字段表示的不满意依赖性 “ myDaoRepository”;嵌套异常为 org.springframework.beans.factory.BeanNotOfRequiredTypeException:Bean 名为“ myDaoRepository”的类型应为 “ aop.question_005.dao.MyDaoRepository”,但实际上是类型 'com.sun.proxy。$ Proxy22'
我可以通过启用GCLIB机制来解决此问题,但是我想知道如何使用相同的JDK动态代理来解决此问题?
答案 0 :(得分:1)
代码中的问题是您使用的是MyDaoRepository类而不是@Repository
接口。您可以将代理转换为接口dao,但不能将其转换为接口的实现。您需要修改服务代码以使用接口:
dao