Spring hello world範例

1. Spring 3.1
2. MyEclipse 10
3. JDK 1.6

1. 建立一個Java工程

開啟 MyEclipse 建立一個java工程：Helloword，並新增Spring支援類庫，右鍵工程名稱，選擇"MyEclipse"->"Add Spring Capabilites"，如下圖：

2. Spring bean

一個簡單的 Spring bean.

package com.yiibai.core;

/**
 * Spring bean
 * 
 */
public class HelloWorld {
	private String name;

	public void setName(String name) {
		this.name = name;
	}

	public void printHello() {
		System.out.println("Spring 3 : Hello ! " + name);
	}
}

4. Spring bean 組態檔案

File : applicationContext.xml

<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-3.0.xsd">

	<bean id="helloBean" class="com.yiibai.core.HelloWorld">
		<property name="name" value="Yiibai" />
	</bean>

</beans>

5. 專案結構

檢視目錄結構如下:

6. 執行程式碼

package com.yiibai.core;

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

public class App {
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext(
				"applicationContext.xml"); HelloWorld obj = (HelloWorld) context.getBean("helloBean");
		obj.printHello();
	}
}

7. 輸出結果

Spring 3 : Hello ! Yiibai

下載原始碼