No qualifying bean of type [xxx] found for dependency

描述

• org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘xxx’：Injection of resource dependencies failed
• org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [xxx] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency

问题来源

• xml配置文件中没有启用注解功能或者扫描包路径错误
• xxxServiceImpl实现类没有使用@Service注解
• xxxService调用错误，出现自己调自己的情况

	
		<context:component-scan base-package="xxx.xxx.xxx"/>

//此处没有使用@service
@Service
public class OperatorServiceImpl implements OperatorService {
     

	/* 自己调自己
	@Resource
	private OperatorService operatorService;
	*/
	
	@Resource
	private OperatorDao operatorDao;