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导入依赖jar包, 使用的是org.spring.framewok 5.1.5 RELEASE

• pom.xm文件的dependencies

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
<!--      <scope>test</scope>-->
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>

<!--    第三方jar-->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>

  </dependencies>

创建xml文件, beans.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">
    <!-- bean definitions here -->

    
    
</beans>

创建接口

• DoSomething.java

package cn.lacknb.iml;

public interface DoSomething {

    void add();

    void delete();

    void find();

    void update();

}

• 创建实现类DoImpl.java

package cn.lacknb.spring;

import cn.lacknb.iml.DoSomething;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class DoImpl implements DoSomething {
    @Override
    public void add() {
        System.out.println("添加成功");
    }

    @Override
    public void delete() {
        System.out.println("删除成功");
    }

    @Override
    public void find() {
        System.out.println("查询成功");
    }

    @Override
    public void update() {
        System.out.println("修改成功");
    }

    public static void main(String[] args) {
        // 传统方式
//        DoSomething doing = new DoImpl();
//        doing.add();
//        doing.delete();
        // spring方式
        // 加载容器
        ApplicationContext context = new ClassPathXmlApplicationContext("xml/beans.xml");
        DoImpl doing = (DoImpl) context.getBean("dosomething");
        doing.find();
        doing.update();
    }
}