Spring使用注解实例化多个包的Bean对象-----Spring框架

╰+攻爆jí腚メ 2024-03-23 22:10 38阅读 0赞

>     <?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">
>     
>         <context:component-scan base-package="com.powernode.spring6"></context:component-scan>
>     
>     
>     </beans>
> 
>     <?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">
>     
>         <context:component-scan base-package="com.powernode.spring6"></context:component-scan>
>     
>     
>     </beans>

>     <?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">
>     
>         <context:component-scan base-package="com.powernode.spring6.bean2" use-default-filters="false">
>     
>             <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
>         </context:component-scan>
>     </beans>
> 
>     <?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">
>     
>         <context:component-scan base-package="com.powernode.spring6.bean2" use-default-filters="false">
>     
>             <context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
>         </context:component-scan>
>     </beans>

>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Component;
>     
>     @Component("userBean")
>     public class User {
>     }
> 
>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Component;
>     
>     @Component("userBean")
>     public class User {
>     }

>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Repository;
>     
>     @Repository
>     //不起名,默认名字为类的名字首字母变小写
>     //<bean id="student" class="com.powernode.spring6.bean.Student">
>     public class Student {
>     }
> 
>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Repository;
>     
>     @Repository
>     //不起名,默认名字为类的名字首字母变小写
>     //<bean id="student" class="com.powernode.spring6.bean.Student">
>     public class Student {
>     }

>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Service;
>     
>     @Service
>     public class Order {
>     }
> 
>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Service;
>     
>     @Service
>     public class Order {
>     }

>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Controller;
>     
>     @Controller("vipBean")
>     //<bean id="vipBean" class="com.powernode.spring6.bean.Vip">
>     //如果属性名为Value的话,value可以省略
>     public class Vip {
>     }
> 
>     package com.powernode.spring6.bean;
>     
>     import org.springframework.stereotype.Controller;
>     
>     @Controller("vipBean")
>     //<bean id="vipBean" class="com.powernode.spring6.bean.Vip">
>     //如果属性名为Value的话,value可以省略
>     public class Vip {
>     }

>     package com.powernode.spring6.bean2;
>     
>     import org.slf4j.Logger;
>     import org.slf4j.LoggerFactory;
>     import org.springframework.stereotype.Component;
>     import org.springframework.stereotype.Controller;
>     import org.springframework.stereotype.Repository;
>     import org.springframework.stereotype.Service;
>     
>     @Component
>     public class A
>     {
>         private static final Logger logger = LoggerFactory.getLogger(A.class);
>         public A() {
>             logger.info("A");
>         }
>     }
>     @Repository
>     class B
>     {
>         private static final Logger logger = LoggerFactory.getLogger(B.class);
>         public B() {
>             logger.info("B");
>         }
>     }
>     @Service
>     class C
>     {
>         private static final Logger logger = LoggerFactory.getLogger(C.class);
>         public C() {
>             logger.info("C");
>         }
>     }
>     @Service
>     class D
>     {
>         private static final Logger logger = LoggerFactory.getLogger(D.class);
>         public D() {
>             logger.info("D");
>         }
>     }
>     @Controller
>     class E
>     {
>         private static final Logger logger = LoggerFactory.getLogger(E.class);
>     
>         public E() {
>             logger.info("E");
>         }
>     }
> 
>     package com.powernode.spring6.bean2;
>     
>     import org.slf4j.Logger;
>     import org.slf4j.LoggerFactory;
>     import org.springframework.stereotype.Component;
>     import org.springframework.stereotype.Controller;
>     import org.springframework.stereotype.Repository;
>     import org.springframework.stereotype.Service;
>     
>     @Component
>     public class A
>     {
>         private static final Logger logger = LoggerFactory.getLogger(A.class);
>         public A() {
>             logger.info("A");
>         }
>     }
>     @Repository
>     class B
>     {
>         private static final Logger logger = LoggerFactory.getLogger(B.class);
>         public B() {
>             logger.info("B");
>         }
>     }
>     @Service
>     class C
>     {
>         private static final Logger logger = LoggerFactory.getLogger(C.class);
>         public C() {
>             logger.info("C");
>         }
>     }
>     @Service
>     class D
>     {
>         private static final Logger logger = LoggerFactory.getLogger(D.class);
>         public D() {
>             logger.info("D");
>         }
>     }
>     @Controller
>     class E
>     {
>         private static final Logger logger = LoggerFactory.getLogger(E.class);
>     
>         public E() {
>             logger.info("E");
>         }
>     }

>     package com.powernode.spring6.dao;
>     
>     import org.springframework.stereotype.Repository;
>     
>     @Repository
>     public class OrderDAO {
>     }
> 
>     package com.powernode.spring6.dao;
>     
>     import org.springframework.stereotype.Repository;
>     
>     @Repository
>     public class OrderDAO {
>     }

>     package com.powernode.spring6.test;
>     
>     import com.powernode.spring6.bean.*;
>     import com.powernode.spring6.dao.OrderDAO;
>     import org.junit.Test;
>     import org.springframework.context.ApplicationContext;
>     import org.springframework.context.support.ClassPathXmlApplicationContext;
>     
>     public class IocAnnotationTest
>     {
>         @Test
>         public void TestBeanComponent()
>         {
>             ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
>             User User = applicationContext.getBean("userBean", User.class);
>             System.out.println(User);
>             Vip v = applicationContext.getBean("vipBean", Vip.class);
>             System.out.println(v);
>             Order order = applicationContext.getBean("order", Order.class);
>             System.out.println(order);
>             Student student = applicationContext.getBean("student",Student.class);
>             System.out.println(student);
>             OrderService o = applicationContext.getBean("orderService", OrderService.class);
>             System.out.println(o);
>             OrderDAO orderDAO = applicationContext.getBean("orderDAO",OrderDAO.class);
>             System.out.println(orderDAO);
>         }
>         @Test
>         public void TestAnnotationComponent()
>         {
>             ApplicationContext applicationContext = new ClassPathXmlApplicationContext("springChoice.xml");
>         }
>     }
> 
>     package com.powernode.spring6.test;
>     
>     import com.powernode.spring6.bean.*;
>     import com.powernode.spring6.dao.OrderDAO;
>     import org.junit.Test;
>     import org.springframework.context.ApplicationContext;
>     import org.springframework.context.support.ClassPathXmlApplicationContext;
>     
>     public class IocAnnotationTest
>     {
>         @Test
>         public void TestBeanComponent()
>         {
>             ApplicationContext applicationContext = new ClassPathXmlApplicationContext("spring.xml");
>             User User = applicationContext.getBean("userBean", User.class);
>             System.out.println(User);
>             Vip v = applicationContext.getBean("vipBean", Vip.class);
>             System.out.println(v);
>             Order order = applicationContext.getBean("order", Order.class);
>             System.out.println(order);
>             Student student = applicationContext.getBean("student",Student.class);
>             System.out.println(student);
>             OrderService o = applicationContext.getBean("orderService", OrderService.class);
>             System.out.println(o);
>             OrderDAO orderDAO = applicationContext.getBean("orderDAO",OrderDAO.class);
>             System.out.println(orderDAO);
>         }
>         @Test
>         public void TestAnnotationComponent()
>         {
>             ApplicationContext applicationContext = new ClassPathXmlApplicationContext("springChoice.xml");
>         }
>     }