spring源码学习2

1、创建Demo项目

创建一个Gradle Module 

2、修改build.gradle

build.gradle 需要添加以下依赖(PS:网上关于这块的帖子实在太少了，调试过程中各种报错，本人走了不少弯路才总结出来的，目前最新版的spring至少要以下5种依赖) ``` plugins { id 'java' }

group 'org.springframework'
version '5.2.0.BUILD-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
mavenCentral()
}

dependencies {
compile(project(":spring-beans"))
compile(project(":spring-core"))
compile(project(":spring-expression"))
compile(project(":spring-context"))
compile(project(":spring-instrument"))
testCompile group: 'junit', name: 'junit', version: '4.12'
}

创建一个service类

package com.springsource;

public class LoginService {

public String login(String username){
	System.out.println(username + "登录...");
	return "success";
}

}

applicationContext.xml

<bean id="loginService" class="com.springsource.LoginService"/>

``` 创建测试类： ``` package com.springsource;

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

public class Test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
LoginService service = (LoginService)context.getBean("loginService");
service.login("admin");
}
}

<h1>3、运行</h1>
运行测试类，成功!
![](https://img2018.cnblogs.com/blog/1373276/201903/1373276-20190306173358492-288823965.png)

最终的项目结构如下：
![](https://img2018.cnblogs.com/blog/1373276/201903/1373276-20190306172634015-877189142.png)