入门案例

进入官网下载jar包或者maven导包

官网：https://spring.io

新建工程

新建一个maven工程

导入依赖包

		<dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>5.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>5.3.14</version>
        </dependency>
        <!-- 日志包 -->
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>

创建普通类，在这个类创建普通方法

public class User{
    public void add(){
        System.out.println("添加...");
    }
}

创建Spring配置文件，在配置文件配置创建对象

配置文件为xml文件

<?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">
    <!-- 配置User对象创建 -->
    <bean id="user" class="com.ye.User">
        
    </bean>
</beans>

进行测试代码编写

package com.ye;

import javafx.application.Application;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author 夜灬瞬
 * @date 2022/01/16 17:42
 */
public class UserTest {

    @Test
    public void add() {
        //加载spring配置文件
        ApplicationContext context = new ClassPathXmlApplicationContext("bean1.xml");
        
        //获取配置创建的对象
        User user = context.getBean("user", User.class);

        System.out.println(user);
        
        user.add();
    }
}

com.ye.User@569cfc36

添加...