Spring对应的demo

1、pom文件配置

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.example</groupId>
  <artifactId>courseTest</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>courseTest Maven Webapp</name>
  <url>http://maven.apache.org</url>


  <properties>
    <maven.compiler.source>13</maven.compiler.source>
    <maven.compiler.target>13</maven.compiler.target>
  </properties>


    <dependencies>
      <!--测试相关-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!--Spring核心基础依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.0.2.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>5.0.2.RELEASE</version>
    </dependency>
    <!--日志相关-->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>courseTest</finalName>
  </build>
</project>

2. Animal类

package com.gqx.bean;

public class Animal {
    public void eat(){
        System.out.println("我要开吃了。。。。");
    }
}

3. 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">

    <!--把testDao对象的创建权交给Spring-->
    <bean id="animal" class="com.gqx.bean.Animal" />

</beans>

4. 测试类

@Test
public void test01(){
    //1. 创建IoC容器对象，加载spring核心配置文件
    //初始化Spring容器ApplicationContext，加载配置文件
    ApplicationContext application = new ClassPathXmlApplicationContext("applicationContext.xml");
    //2. 从IOC容器中获取Bean对象
    Animal animal = (Animal) application.getBean("animal");
    animal.eat();
}