Spring 原理基础--自学笔记

墨蓝 2021-12-16 00:23 182阅读 0赞

**Spring框架的基本原理是IOC(控制反转)和AOP(面向切面编程)**

Soring使用步骤

1.  新建Spring项目
2.  导包  
    ![在这里插入图片描述][20190703144517419.png]
3.  配置文件，配置bean  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70]  
    ![在这里插入图片描述][2019070314462156.png]

<?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:p="http://www.springframework.org/schema/p"
    	xmlns:c="http://www.springframework.org/schema/c"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    
    	
    	<bean id="helloWorld" class="com.wf.spring.beans.HelloWorld">
    		<property name="name" value="Sping"></property>
    	</bean>
    	
    	
    	<bean id="car" class="com.wf.spring.beans.Car"></bean>
    	
    </beans>

1.  创建Spring的IOC容器对象

ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");

1.  从IOC容器中获取Bean实例

HelloWorld helloWorld = (HelloWorld) ctx.getBean("helloWorld");

1.  调用Hello方法

helloWorld.hello();

1.  运行结果  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 1]

*整体结构*  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 2]

[20190703144517419.png]: /images/20211215/bc7ea2f38afd4f55b9b17be6c5a7a67b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70]: /images/20211215/f8ee11ef04834259a4cd53adcbc710bb.png
[2019070314462156.png]: /images/20211215/8478714a38584a10b6c88ca2e3975e30.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 1]: /images/20211215/5cd74dde92684db0b9fa7784776c1170.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzE1NTg2Ng_size_16_color_FFFFFF_t_70 2]: /images/20211215/6e873301c564410fb0a7c53b4dfc4911.png