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[Java教程]Spring 一二事(8)

1 <!-- 2       component:把一个类放入到spring容器中,该类就是一个component3       在base-package指定的包及子包下扫描所有的类4   -->5   <context:component-scan base-package="com.lee.spring012.scan.mvc.annotation"></context:component-scan>

IStuDAO.java

1 package com.lee.spring012.scan.mvc.annotation;2 3 public interface IStuDAO {4   public void saveStu();5 }

IStuService.java

1 package com.lee.spring012.scan.mvc.annotation;2 3 public interface IStuService {4   public void saveStu();5 }

PersonAction.java

 1 package com.lee.spring012.scan.mvc.annotation; 2  3 import javax.annotation.Resource; 4  5 import org.springframework.context.annotation.Scope; 6 import org.springframework.stereotype.Controller; 7  8 @Controller 9 @Scope("prototype")    // action为多例10 public class PersonAction {11 12   @Resource13   public IStuService stuServiceImpl;14 15   public void displaySave() {16     System.out.println("mvc action: saving stu...");17     stuServiceImpl.saveStu();18   }19 20 }

StuDAOImpl.java

 1 package com.lee.spring012.scan.mvc.annotation; 2  3 import org.springframework.stereotype.Repository; 4  5 @Repository 6 public class StuDAOImpl implements IStuDAO { 7  8   @Override 9   public void saveStu() {10     System.out.println("mvc dao: saving stu...");11   }12 13 }

StuServiceImpl.java

 1 package com.lee.spring012.scan.mvc.annotation; 2  3 import javax.annotation.Resource; 4  5 import org.springframework.stereotype.Service; 6  7 @Service 8 public class StuServiceImpl implements IStuService { 9 10   @Resource11   public IStuDAO stuDAOImpl;12   13   @Override14   public void saveStu() {15     System.out.println("mvc service: saving stu...");16     stuDAOImpl.saveStu();17   }18 19 }

测试

 1 package com.lee.spring012.scan.mvc.annotation; 2  3 import org.junit.Test; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.support.ClassPath 6  7 public class PersonTest { 8  9   @Test10   public void testPersonAction() {11     ApplicationContext context = new ClassPath);12     PersonAction person = (PersonAction)context.getBean("personAction");13     person.displaySave();14   }15 16 }

github地址:https://github.com/leechenxiang/maven-spring001-helloworld