使用IDEA搭建spring

　　从前使用eclipse开发，集成jar包，现在使用maven来管理

一：

1.框架

　　

2.pom

　　需要spring core与spring context。

<?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>SpringTest</groupId>
    <artifactId>SpringTest</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.0.0.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.0.RELEASE</version>
        </dependency>

    </dependencies>
</project>

3.接口HelloWorld

package com.it.service;

public interface HelloWorld {
    public void sayHello();
}

4.实现类

package com.it.service;

public class SpringHelloWorld implements HelloWorld {

    public void sayHello() {
        System.out.println("say hello");
    }
}

5.bean

package com.it.bean;

import com.it.service.HelloWorld;

public class HelloWorldService {
    private HelloWorld helloWorld;

    public HelloWorldService() {

    }

    public void setHelloWorld(HelloWorld helloWorld) {
        this.helloWorld = helloWorld;
    }

    public HelloWorld getHelloWorld() {
        return this.helloWorld;
    }
}

6.运行main

package com.it.main;

import com.it.service.HelloWorld;
import com.it.bean.HelloWorldService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class HelloMain {
    public static void main(String[] args) {

        ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");

        HelloWorldService service = (HelloWorldService) context.getBean("helloWorldService");

        HelloWorld hw= service.getHelloWorld();

        hw.sayHello();
    }
}

7.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 id="helloWorldService" class="com.it.bean.HelloWorldService">
        <property name="helloWorld" ref="springHelloWorld"/>
    </bean>

    <bean id="springHelloWorld" class="com.it.service.SpringHelloWorld"></bean>
</beans>

8.效果