【Spring源码分析系列】搭建Spring实现容器的基本实现

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前言

bean是Spring中最核心的东西，因为Spring就像一个大水桶，而bean就像是容器中的水，先新建一个小例子来看一下；

一、使用eclipse构建项目，项目结构如下

二、类文件内容

 <?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:aop="http://www.springframework.org/schema/aop"

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

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

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

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

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

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

     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd

         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd

         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd

         http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">

 <bean id="car" class="com.slp.Car"></bean>

 </beans>

 package com.slp;

 /**

  *

  * @ClassName:  Car

  * @Description:测试类

  * @author: liping.sang

  * @date:   2017年9月22日 上午8:55:37

  *

  * @Copyright: 2017 liping.sang Inc. All rights reserved.

  */

 public class Car {

     private String speed = "200";

     private String brandName = "BYD";

     public String getSpeed() {

         return speed;

     }

     public void setSpeed(String speed) {

         this.speed = speed;

     }

     public String getBrandName() {

         return brandName;

     }

     public void setBrandName(String brandName) {

         this.brandName = brandName;

     }

 }

 package com.slp;

 import org.springframework.beans.factory.BeanFactory;

 import org.springframework.beans.factory.xml.XmlBeanFactory;

 import org.springframework.core.io.ClassPathResource;

 public class TestConfig {

     public static void main(String[] args) {

         // TODO Auto-generated method stub

         BeanFactory bf  = new XmlBeanFactory(new ClassPathResource("beans.xml"));

         Car car = (Car) bf.getBean("car");

         System.out.println(car.getSpeed());//===>200

     }

 }