2-3 注解和配置文件的混合使用

落日映苍穹つ 2022-05-25 13:29 173阅读 0赞

具体代码实现

配置文件  bean2.xml

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1.  **<?****xml** version="1.0" encoding="UTF-8"**?>**  
2.    
3.  **<****beans** xmlns="http://www.springframework.org/schema/beans"  
4.      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
5.      xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="  
6.          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
7.          http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsd"**>**  
8.    
9.    **<****context:component-scan** base-package="com.cn.anno"**>****</****context:component-scan****>**  
10.    
11.    
12.    **<****bean** id="bookService" class="com.cn.xmlanno.BookService"**>****</****bean****>**  
13.    **<****bean** id="bookDao" class="com.cn.xmlanno.BookDao"**>****</****bean****>**  
14.    **<****bean** id="orderDao" class="com.cn.xmlanno.OrderDao"**>****</****bean****>**  
15.      
16.   
17. **<****strong****>****<****span** style="font-size:18px;"**>****</****beans****>**  
18. **</****span****>****</****strong****>**

BookDao.java

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1.  **package** com.cn.xmlanno;  
2.    
3.  **public** **class** BookDao \{  
4.      **public** **void** book()\{  
5.          System.out.println("booksdao......");  
6.      \}  
7.  \}

OrderDao.java

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1.  **package** com.cn.xmlanno;  
2.    
3.  **public** **class** OrderDao \{  
4.      **public** **void** buy()\{  
5.          System.out.println("ordersdao......");  
6.      \}  
7.  \}

BookService.java

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1.  **package** com.cn.xmlanno;  
2.    
3.  **import** javax.annotation.Resource;  
4.    
5.  **public** **class** BookService \{  
6.      //得到bookdao和ordersdao对象  
7.      @Resource(name="bookDao")  
8.      **private** BookDao  bookDao;  
9.      @Resource(name="orderDao")  
10.     **private** OrderDao  orderDao;  
11.     **public** **void** add()\{  
12.         System.out.println("service......");  
13.         bookDao.book();  
14.         orderDao.buy();  
15.     \}  
16. \}

测试类TestAnno.java

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1.  **package** com.cn.xmlanno;  
2.    
3.  **import** org.junit.Test;  
4.  **import** org.springframework.context.ApplicationContext;  
5.  **import** org.springframework.context.support.ClassPathXmlApplicationContext;  
6.    
7.  **public** **class** TestAnno \{  
8.    
9.      @Test  
10.     **public** **void** testService()\{  
11.         ApplicationContext context=  
12.                 **new** ClassPathXmlApplicationContext("bean2.xml");  
13.         BookService book=(BookService) context.getBean("bookService");  
14.         book.add();  
15.     \}  
16. \}

测试结果  
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[view plain]: https://blog.csdn.net/zhupengqq/article/details/72811265#
[Center]: /images/20220525/1fb0a13be2b648698fb19c6f9f25d9e8.png