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