Spring IOC容器Bean管理的完全注解开发放弃配置文件

package com.pingguo.spring5.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@ComponentScan(basePackages = {"com.pingguo.spring5"})
public class SprinGConfig {
}

public class TestService {
    @Test
    public void testService() {
        ApplicationContext context
                = new AnnotationConfigApplicationContext(SpringConfig.class);
        UserService userService = context.getBean("userService", UserService.class);
        System.out.println(userService);
        userService.add();
    }
}

com.pingguo.spring5.service.UserService@72a7c7e0
service add() ... ...
spring 从0开始
UserDao UserDaoImpl2 add()... ...
Process finished with exit code 0