目录

1. Spring框架的概述

 2.搭建Spring框架

pom.xml配置

Demo.java

applicationContext.xml

DemoTest.java

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1. Spring框架的概述

IOC:控制反转，将创建对象的过程交给spring进行管理

AOP:面向切面，在不修改源代码的情况之下进行代码功能的增强

ssm框架是由mybatis，Spring，SpringMVC组成

 2.搭建Spring框架

创建maven工程，导入坐标依赖

pom.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>Spring_demo</artifactId><version>1.0-SNAPSHOT</version><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.2</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.12</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version><scope>test</scope></dependency></dependencies></project>

编写demo，编写具体的实现方法

Demo.java

package com.qcby;import org.springframework.context.ApplicationContext;public class Demo {public void run(){System.out.println("hello Spring");}}

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.xsd"><!--IOC管理bean--><!--id:类的唯一标识符 class:类的全路径名--><bean id="demo" class="com.qcby.service.Demo" />
</beans>

 编写测试方法。

DemoTest.java

import com.qcby.Demo;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;public class DemoTest {@Testpublic void testDemo(){Demo userService = new Demo();userService.run();//创建spring工厂}@Testpublic void run1(){//创建spring工厂，加载配置文件ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");//获取bean对象Demo us = (Demo) ac.getBean("demo");//调用方法us.run();}}

输出