JavaEE框架整合开发入门到实战：Spring+SpringMVC+MyBAtis(微课版）——代码练习第二章

目录结构

TestDIDao.java

package dao;

public interface TestDIDao {
	public void sayHello();
}

TestDiDaoImpl.java

package dao;

public class TestDiDaoImpl implements TestDIDao {

	@Override
	public void sayHello() {
		// TODO Auto-generated method stub
		  System.out.println("Hello,Study hard!");
	}

}

TestDIService.java

package service;

public interface TestDIService {
	public void sayHello();
}

TestDIServiceImpl.java

package service;

import dao.TestDIDao;

public class TestDIServiceImpl implements TestDIService {
  
    private TestDIDao testDIDao1;
  
    public void setTestDIDao(TestDIDao testDIDao) {
    
    	this.testDIDao1=testDIDao;
    }
	@Override
	public void sayHello() {
		// TODO Auto-generated method stub
        testDIDao1.sayHello();
        System.out.println("TestDIService构造方法注入say:Hello,StudyHard");
	}

}

TestDI.java

package test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

import service.TestDIService;



public class TestDI {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ApplicationContext appcon=
				new ClassPathXmlApplicationContext("applicationContext.xml");
		TestDIService ts=(TestDIService)appcon.getBean("testDIservice");
		ts.sayHello();
	}

}

application.xml

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

    <bean id="myTestDIDao" class="dao.TestDiDaoImpl">
    </bean>
    <!-- more bean definitions go here 
    <bean id="testDIservice" class="service.TestDIServiceImpl">
         <constructor-arg index="0" ref="myTestDIDao"/>
    </bean>
    -->
    <bean id="testDIservice" class="service.TestDIServiceImpl">
         <property name="TestDIDao" ref="myTestDIDao"/>
    </bean> 
</beans>

运行结果