我是Spring MVC的新手,我刚开始使用基于Java的配置启动项目,而在构建项目时,我从Tomcat日志中得到了以下消息:
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类:
@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类:
@Configuration
@EnableWebMvc
@EnableTransactionManagement
@ComponentScan(basePackages = "com.djamel")
public class AppConfig {
@Bean
public DataSource dataSource() {
...
}
@Bean
public JdbcTemplate jdbcTemplate(DataSource dataSource) {
...
}
}
请问我该如何解决这个问题?
您没有发布控制器代码或服务界面。但是,从stacktrace看来,Spring似乎正在尝试使用接口的代理来满足依赖关系。在控制器中的服务中添加限定符可以解决该问题。就像是:
public class CountryController{
..
@Autowired @Qualifier("CountryService")
private Services<Country> countryService;
..
..
}
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