• 1. 建立Maven工程，並引入JAR
• 建立Spring核心配置檔案
• 建立類

1. 建立Maven工程，並引入JAR

JAR 包引入

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>5.0.8.RELEASE</version>
</dependency>

建立Spring核心配置檔案

spring.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">

</
 
beans>

建立類

DAO 層

package com.javaee.spring.dao;

public class ExampleDao {
	public void save() {
		System.out.println("------ dao save() ------");
	}
}

Service 層

package com.javaee.spring.service;

import com.javaee.spring.dao.ExampleDao;

public class ExampleService{
	private
 
 ExampleDao exampleDao;
	public void save() {
		System.out.println("------ service save() ------");
		exampleDao.save();
	}
	public void setExampleDao(ExampleDao exampleDao) {
		this.exampleDao = exampleDao;
	}
}

註冊Bean

<bean id="exampleService" class="com.javaee.spring.service.ExampleService">
	<property name="exampleDao" ref="exampleDao" />
</bean>

<bean id="exampleDao" class="com.javaee.spring.dao.ExampleDao"></bean>

測試

public class ExampleBeanTest {

	private ClassPathXmlApplicationContext context;
	private ExampleService exampleService;

	@Before
	public void init() {
		context = new ClassPathXmlApplicationContext("spring.xml");
		exampleService = (ExampleService) context.getBean("exampleService");
	}

	@Test
	public void save() {
		exampleService.save();
	}

}