Spring4

1. Hello World

   

HelloWorld.java

package com.test.spring01;

public class HelloWorld {
	private String name;

	public HelloWorld() {
		System.out.println("调用构造函数...");
	}

	public String getName() {
		return name;
	}

	public void setName2(String name) {//对应name="name2" 
		this.name = name;
	}

	public void sayHello() {
		System.out.println("Hello," + name);
	}

}

Main.java

package com.test.spring01;

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

public class Main {
	public static void main(String[] args) {
		ApplicationContext applicationContext = new ClassPathXmlApplicationContext("ApplicationContext.xml");
		System.out.println("创建对象");
		HelloWorld helloWorld = (HelloWorld)applicationContext.getBean("a1");
		helloWorld.sayHello();
	}
}

applicationContext.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-3.0.xsd">
                                 
    <bean id="a1" class="com.test.spring01.HelloWorld">
    	<property name="name2" value="spring"/>
    </bean>
</beans>

运行结果

调用构造函数...

创建对象

Hello,spring