@Autowired 和@Resource使用

1.@Autowired只按照类型注入，不匹配name进行注入。而@Resource就比较灵活，默认的话按照name匹配（即示例中的bean的id），@Resource可以通过配置它的两个属性：name和type来指定按照类型还是名称注入，不指定默认按照name注入，一般来说@Autowired用在实现类上。

下面说说将@Resource用在实现类里会出现的问题
比如我有两个Mapper

@Mapper
public interface Cs1Mapper {
    
}

@Mapper
public interface CsMapper {
    
}

然后我的实现类里这样写，注入的是Cs1Mapper 但是名字又写成这样csMapper

public interface CsService {
    
}

@Service
public class Cs1ServiceImpl implements Cs1Service {
    @ResourceCs1Mapper csMapper;
}

启动的时候就会报错

Description:The bean 'csMapper' could not be injected as a 'com.xxx.xxx.mapper.Cs1Mapper' because it is a JDK dynamic proxy that implements:Action: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.

改成这样就能启动，因为@Autowired是根据type去找的

@Service
public class Cs1ServiceImpl implements Cs1Service {
    @AutowiredCs1Mapper csMapper;
}