前言

简略的说一下spring的搭建流程，内容偏根底，底子不好的能够看一下！

配置Maven

如图所示：找到之前筹备好的文件门路

流程

1、新建UserService接口
2、新建UserService实现类
3、通过bean将UserService放入容器
4、通过context的getbean办法拿到UserService对象

加载根底包：

代码如下：

   <dependencies><!-- https://mvnrepository.com/artifact/org.springframework/spring-core --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-core</artifactId>    <version>5.2.13.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-beans --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-beans</artifactId>    <version>5.2.13.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-context --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-context</artifactId>    <version>5.2.13.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-expression --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-expression</artifactId>    <version>5.2.13.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-aop --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-aop</artifactId>    <version>5.2.13.RELEASE</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-jcl --><dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-jcl</artifactId>    <version>5.2.13.RELEASE</version></dependency>

后刷新Maven.

配置文件

内容：

 <?xml version="1.0" encoding="UTF-8"?>  <beans xmlns="http://www.springframework.org/schema/beans"   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   xmlns:util="http://www.springframework.org/schema/util"   xsi:schemaLocation="    http://www.springframework.org/schema/beans    https://www.springframework.org/schema/beans/spring-beans.xsd    http://www.springframework.org/schema/util    https://www.springframework.org/schema/util/spring-util.xsd   ">   </beans>

点右上角提醒的“Configure application context”就能够了。

编写代码

接口类

代码如下

新建class文件UserServiceImpl

实现

配置文件

写mian办法

   public class DemoTest {public static void main(String[] args){    ApplicationContext context = new ClassPathXmlApplicationContext            ("classpath:applicationContext.xml");    UserSvice service = (UserSvice) context.getBean("userService");    service.saveUser();}}

如图：
运行mian办法，

测试后果为

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