Spring阶段性学习总结（八）注解开发配置Bean

1 package SpringAnnotation;
2 
3 import org.springframework.stereotype.Component;
4 
5 @Component("testObject")
6 public class TestObject {
7 
8 }

 1 package SpringAnnotation.service;
 2 
 3 import SpringAnnotation.repository.UserRepository;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 import org.springframework.stereotype.Service;
 6 
 7 @Service("userService")
 8 public class UserService {
 9     @Autowired
10     private UserRepository userRepository;
11 
12     public void add() {
13         System.out.println("UserService add....");
14         userRepository.save();
15     }
16 
17 }

1 package SpringAnnotation.repository;
2 
3 public interface UserRepository {
4     public  void save();
5 }

 1 package SpringAnnotation.repository;
 2 
 3 import org.springframework.stereotype.Repository;
 4 
 5 @Repository("userRepository")
 6 
 7 public class UserRepositoryImp implements UserRepository {
 8     @Override
 9     public void save() {
10         System.out.println("UserRepository save.....");
11     }
12 }

 1 package SpringAnnotation.Controller;
 2 
 3 import SpringAnnotation.service.UserService;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 import org.springframework.stereotype.Controller;
 6 
 7 @Controller("userController")
 8 public class UserController {
 9     @Autowired
10      UserService userService;
11 
12     public void extute(){
13         System.out.println("UserController extute....");
14         userService.add();
15     }
16 
17 }

 1 package SpringAnnotation;
 2 
 3 import SpringAnnotation.Controller.UserController;
 4 import SpringAnnotation.repository.UserRepository;
 5 import SpringAnnotation.service.UserService;
 6 import org.springframework.context.ApplicationContext;
 7 import org.springframework.context.support.ClassPathXmlApplicationContext;
 8 
 9 public class Main {
10     public static void main(String[] args) {
11         ApplicationContext ctx = new ClassPathXmlApplicationContext("SpringAnnotation/beans-annotation.xml");
12       /* TestObject testObject=(TestObject) ctx.getBean("testObject");
13         System.out.println(testObject);*/
14 
15        /* UserRepository userRepository=(UserRepository) ctx.getBean("userRepository");
16         System.out.println(userRepository);*/
17 
18         UserController userController = (UserController) ctx.getBean("userController");
19         System.out.println(userController);
20         userController.extute();
21 /*
22         UserService userService=(UserService) ctx.getBean("userService");
23         System.out.println(userService);*/
24 
25     }
26 }

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:context="http://www.springframework.org/schema/context"
 5        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">
 6 
 7 
 8     <!--制定IOC容器扫描的类-->
 9     <!--resource-pattern可进行范围限制-->
10     <!--context:exclude-filter子节点指定排除哪些指定表达式的组件-->
11     <!--<context:include-filter 表示只包含表达式的组件，需要配置use-default-filters=false-->
12     <!--type:assignable 是用类名进行追踪来处理后面expression的内容-->
13     <context:component-scan
14             base-package="SpringAnnotation"
15     >
16     </context:component-scan>
17 
18 </beans>