@Transactional显示问题

Question

我是spring的新手，我刚刚开始了一个基于java配置的项目，在构建我的项目时，我从Tomcat日志中得到了这样的消息：

SEVERE: Context initialization failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'countryController': Unsatisfied dependency expressed through field 'countryService'; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'countryService' is expected to be of type 'com.djamel.service.CountryService' but was actually of type 'com.sun.proxy.$Proxy37'

这是我的CountryService课程：

@Service
public class CountryService implements Services<Country>{

    @Autowired
    CountryDao countryDao;

    @Autowired
    CityDao cityDao;

    ...

    @Transactional
    public Long add(Country country) {

       Long key = countryDao.add(country);

       if(!country.getCities().isEmpty()){
          for (City city : country.getCities()) {
              cityDao.add(key, city);
          }         
       }

       return (long) 1;
    }

    ...

}

这是我的Config课程：

@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan(basePackages = "com.djamel")
public class AppConfig {

    @Bean
    public DataSource dataSource() {
        ...
    }

    @Bean
    public JdbcTemplate jdbcTemplate(DataSource dataSource) {
        ...
    }   
}

请问，我怎样才能解决这个问题？

Answer 1

您没有发布控制器代码或服务接口。但是，从堆栈跟踪来看，Spring试图使用接口的代理来满足依赖关系。在控制器中向您的服务添加一个限定符应该会修复它。类似于：

public class CountryController{
..
@Autowired @Qualifier("CountryService")
private Services<Country> countryService;
..
..
}