spring ico

代码非常简单。如果缺少jar包将导致报错。

需要5个spring jar包和1个logging jar，否则报错。

org.springframework.asm.jar
org.springframework.core.jar
org.springframework.beans.jar
org.springframework.context.jar
org.springframework.expression.jar

定义一个接口，一个实现类。java project项目。

package ioc;

public interface HelloApi {

    public void sayHello();

}

package ioc;

public class Hello implements HelloApi{

    @Override

    public void sayHello() {

        System.out.println("Hello World!");

 }

}

package ioc;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class HelloTest {

    public static  void main(String[] args) {

        ApplicationContext context = new ClassPathXmlApplicationContext("helloworld.xml");

         HelloApi helloApi = context.getBean("hello", HelloApi.class);

         helloApi.sayHello();

  }

}

<?xml version="1.0" encoding="UTF-8"?>

<beans

xmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xsi:schemaLocation="

http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

http://www.springframework.org/schema/context                http://www.springframework.org/schema/context/spring-context-3.0.xsd">

  <!-- id 表示你这个组件的名字，class表示组件类 -->

<bean id="hello" class="ioc.Hello"></bean>

</beans>

不清楚如何找到该xml文件。

 ApplicationContext context = new ClassPathXmlApplicationContext("helloworld.xml");

巴特西

spring ico

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