Spring实验

目录

1. 在src下建目录lib,将jar包放进去,
2. 右键包全部添加到类路径
   

8-1

源码

HelloBean

package com.ding.bean;

/**
 * @Description TODO
 * @Author 丁帅帅
 * @Date 21/10/22 10:12
 * @Version 1.0
 */
public class HelloBean {

    private String name;
    private String course;
    private Double score;

    public HelloBean() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCourse() {
        return course;
    }

    public void setCourse(String course) {
        this.course = course;
    }

    public Double getScore() {
        return score;
    }

    public void setScore(Double score) {
        this.score = score;
    }

    @Override
    public String toString() {
        return "HelloBean{" +
                "name='" + name + '\'' +
                ", course='" + course + '\'' +
                ", score=" + score +
                '}';
    }
}

application.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
        https://www.springframework.org/schema/beans/spring-beans.xsd">
    <!-- 1.创建spring控制的资源-->
    <bean id="stu1" class="com.ding.bean.HelloBean">
        <property name="name" value="张三"></property>
        <property name="course" value="数学"></property>
        <property name="score" value="95"></property>
    </bean>
    <bean id="stu2" class="com.ding.bean.HelloBean">
        <property name="name" value="李四"></property>
        <property name="course" value="语文"></property>
        <property name="score" value="90"></property>
    </bean>
    <bean id="stu3" class="com.ding.bean.HelloBean">
        <property name="name" value="王二"></property>
        <property name="course" value="计算机"></property>
        <property name="score" value="85"></property>
    </bean>
</beans>

Main

package com.ding.bean;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @Description TODO
 * @Author 丁帅帅
 * @Date 21/10/22 10:20
 * @Version 1.0
 */
public class Main {
    public static void main(String[] args) {
        //加载配置文件
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        //获取资源
        HelloBean student1 = (HelloBean) ctx.getBean("stu1");
        //System.out.println(student1);
        System.out.println("姓名:" +student1.getName()+"课程名:"+student1.getCourse()+"分数:"+student1.getScore());
       //获取资源
        HelloBean student2 = (HelloBean) ctx.getBean("stu2");
        System.out.println("姓名:" +student2.getName()+"课程名:"+student2.getCourse()+"分数:"+student2.getScore());
       //获取资源
        HelloBean student3 = (HelloBean) ctx.getBean("stu3");
        System.out.println("姓名:" +student3.getName()+"课程名:"+student3.getCourse()+"分数:"+student3.getScore());

    }
}

运行截图

8-4

源码

HelloScope

package com.ding.bean;

/**
 * @Description TODO
 * @Author 丁帅帅
 * @Date 21/10/22 10:39
 * @Version 1.0
 */
public class HelloScope {
    private String hello;

    public HelloScope() {
    }

    public HelloScope(String hello) {
        this.hello = hello;
    }

    public String getHello() {
        return hello;
    }

    public void setHello(String hello) {
        this.hello = hello;
    }
}

hello_scope.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
        https://www.springframework.org/schema/beans/spring-beans.xsd">
    <!-- 1.创建spring控制的资源-->
    <bean name="hhh" class="com.ding.bean.HelloScope" scope="singleton">
        <property name="hello" value="张三,你好"></property>

    </bean>

</beans>

Main2

package com.ding.bean;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * @Description TODO
 * @Author 丁帅帅
 * @Date 21/10/22 10:43
 * @Version 1.0
 */
public class Main2 {
    public static void main(String[] args) {
        //加载配置文件
        ApplicationContext ctx = new ClassPathXmlApplicationContext("hello_scope.xml");
        //获取资源
        HelloScope h1 = (HelloScope) ctx.getBean("hhh");
        HelloScope h2 = (HelloScope) ctx.getBean("hhh");
        System.out.println("h1==h2的比较结果:");
        if (h1 == h2) {
            System.out.println(true);
        } else {
            System.out.println(false);
        }
        System.out.println("h1.equals(h2)的比较结果:");
        if (h1.getHello().equals(h2.getHello())) {
            System.out.println(true);
        } else {
            System.out.println(false);
        }
    }
}

运行截图

Idea版

pom

<?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>com.ding</groupId>
<artifactId>shangketest</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.1.9.RELEASE</version>
    </dependency>

</dependencies>

</project>