idea创建Spring项目

创建Maven项目

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引入依赖

<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.2.9.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.20</version>
    <scope>provided</scope>
</dependency>

测试

配置文件

命名为：applicationContext.xml，完整代码如下：

<?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 id="student1" class="com.ledao.entity.Student">
        <property name="id" value="1"/>
        <property name="name" value="张三"/>
        <property name="age" value="11"/>
    </bean>
</beans>

学生实体类

命名为：Student.java

package com.ledao.entity;

import lombok.Data;

/**
 * @author LeDao
 * @company
 * @create 2021-08-24 1:58
 */
@Data
public class Student {

    /**
     * 编号
     */
    private Integer id;
    /**
     * 姓名
     */
    private String name;
    /**
     * 年龄
     */
    private Integer age;
}

测试类

命名为：Test.java

package com.ledao;

import com.ledao.entity.Student;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @author LeDao
 * @company
 * @create 2021-08-24 1:57
 */
public class Test {

    public static void main(String[] args) {
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        Student student = (Student) context.getBean("student1");
        System.out.println(student.getId()+","+student.getName()+","+ student.getAge());
    }
}

结果

运行测试类的main方法，结果如下：