java - 交易注解错误

Question

当我在我的服务类中放置“@Transactional(readOnly=false)”注释时，出现以下错误

描述:

The bean 'studentService' could not be injected as a 'com.student.service.StudentServiceImpl' because it is a JDK dynamic proxy that implements: com.student.service.StudentService

示例代码:

@Service("studentService")
@Transactional(readOnly=false)
public class StudentServiceImpl implements StudentService {

}

public interface StudentService {

}

行动:

Consider injecting the bean as one of its interfaces or forcing the use of CGLib-based proxies by setting proxyTargetClass=true on @EnableAsync and/or @EnableCaching.

Process finished with exit code 1

是什么原因造成的？

Answer 1

正如评论中已经提到的那样，当您尝试注入(inject)/ Autowiring 实现类而不是接口(interface)时会发生错误。

The bean 'studentService' could not be injected as a 'com.student.service.StudentServiceImpl' because it is a JDK dynamic proxy that implements: com.student.service.StudentService

在 SO 发布的设置上，

public class StudentServiceImpl implements StudentService {
}

public interface StudentService {
}

如果你按照下面的方式自动连接接口(interface)，你将不会收到错误:

@Autowired //or @Inject
StudentService studentService;