Spring阶段性学习总结（八）注解开发配置Bean

package SpringAnnotation;

import org.springframework.stereotype.Component;

@Component("testObject")
public class TestObject {

}

package SpringAnnotation.service;

import SpringAnnotation.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service("userService")
public class UserService {
    @Autowired
    private UserRepository userRepository;

    public void add() {
        System.out.println("UserService add....");
        userRepository.save();
    }

}

package SpringAnnotation.repository;

public interface UserRepository {
    public  void save();
}

package SpringAnnotation.repository;

import org.springframework.stereotype.Repository;

@Repository("userRepository")

public class UserRepositoryImp implements UserRepository {
    @Override
    public void save() {
        System.out.println("UserRepository save.....");
    }
}

package SpringAnnotation.Controller;

import SpringAnnotation.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;

@Controller("userController")
public class UserController {
    @Autowired
     UserService userService;

    public void extute(){
        System.out.println("UserController extute....");
        userService.add();
    }

}

package SpringAnnotation;

import SpringAnnotation.Controller.UserController;
import SpringAnnotation.repository.UserRepository;
import SpringAnnotation.service.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {
    public static void main(String[] args) {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("SpringAnnotation/beans-annotation.xml");
      /* TestObject testObject=(TestObject) ctx.getBean("testObject");
        System.out.println(testObject);*/

       /* UserRepository userRepository=(UserRepository) ctx.getBean("userRepository");
        System.out.println(userRepository);*/

        UserController userController = (UserController) ctx.getBean("userController");
        System.out.println(userController);
        userController.extute();
/*
        UserService userService=(UserService) ctx.getBean("userService");
        System.out.println(userService);*/

    }
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


    <!--制定IOC容器扫描的类-->
    <!--resource-pattern可进行范围限制-->
    <!--context:exclude-filter子节点指定排除哪些指定表达式的组件-->
    <!--<context:include-filter 表示只包含表达式的组件，需要配置use-default-filters=false-->
    <!--type:assignable 是用类名进行追踪来处理后面expression的内容-->
    <context:component-scan
            base-package="SpringAnnotation"
    >
    </context:component-scan>

</beans>