IDEA工具导入Spring 源码工程

前提条件

JDK1.8版本
安装Gradle

下载Spring源码

进入Github，找到spring-framework源码地址。或者直接登陆到GitHub - spring-projects/spring-framework: Spring Framework这个地址官网，下载到本地磁盘

修改配置信息，为编译做准备工作

使用idea打开我们刚刚下载的Spring工程项目，使用Gradle 对Spring项目进行编译

修改工程中最外边的settings.gradle文件，修改文件中的插件中的仓库信息，修改如下：

pluginManagement {
	repositories {
		gradlePluginPortal()
		mavenLocal()
		maven { url 'https://mirrors.huaweicloud.com/repository/maven/' }
		maven { url 'https://maven.aliyun.com/repository/public' }
		maven { url 'https://nexus.bsdn.org/content/groups/public/' }
		maven { url 'https://maven.aliyun.com/repository/google' }
		maven { url 'https://maven.aliyun.com/repository/spring' }
		maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
		maven { url 'https://maven.aliyun.com/repository/spring-plugin' }
		maven { url 'https://repo.huaweicloud.com/repository/maven/' }
		maven { url 'https://repo.spring.io/plugins-release' }
	}
}

修改工程中最外边的build.gradle文件，同上边修改setting.gradle一样，同样修改的也是仓库信息，具体如下：

		repositories {
			mavenLocal()
			maven { url 'https://mirrors.huaweicloud.com/repository/maven/' }
			maven { url 'https://maven.aliyun.com/repository/public' }
			maven { url 'https://nexus.bsdn.org/content/groups/public/' }
			maven { url 'https://maven.aliyun.com/repository/google' }
			maven { url 'https://maven.aliyun.com/repository/spring' }
			maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
			maven { url 'https://maven.aliyun.com/repository/spring-plugin' }
			maven { url 'https://repo.huaweicloud.com/repository/maven/' }
		    maven { url "http://repo.springsource.org/plugins-release" }
		    mavenCentral()
		}

修改工程中gradle目录下的build-cache-settings.gradle文件，我们使用本地缓存，关闭远端缓存信息

buildCache {
	local {
		enabled = true
	}
	remote(HttpBuildCache) {
		enabled = false  ## 关闭远端缓存
		url = 'https://ge.spring.io/cache/'
		def cacheUsername = System.getenv('GRADLE_ENTERPRISE_CACHE_USERNAME')
		def cachePassword = System.getenv('GRADLE_ENTERPRISE_CACHE_PASSWORD')
		if (cacheUsername && cachePassword) {
			push = true
			credentials {
				username = cacheUsername
				password = cachePassword
			}
		}
	}
}

编译工程，导入到idea中

我们在下载的目录中开启cmd命令窗口，执行一下gradlew编译命令，看一下是否可以通过编译，具体执行如下命令：
```
gradlew :spring-oxm:compileTestJava

BUILD SUCCESSFUL in 33s
40 actionable tasks: 22 executed, 18 up-to-date
```
将结果导入到idea中，File -> New -> Project from Existing Sources -> Navigate to directory -> Select build.gradle
启动时记得要排除spring-aspects module

在源码中创建自己的工程

在源码的父工程下创建一个Gradle的子module，名称为my-spring-demo子模块。在我们修改的第一个配置文件setting.gradle的下边添加我们相关的子模块信息。

include "spring-websocket"
include "framework-bom"
include "integration-tests"
include "my-spring-demo"   ## 我们自己的项目模块
rootProject.name = "spring"
rootProject.children.each {project ->
	project.buildFileName = "${project.name}.gradle"
}

在我们的子模块中修改自己模块中的gradle配置信息，注意： 该gradle文件必须和你的项目模块名称一致，比如我们的是my-spring-demo.gradle文件

plugins {
    id 'java'
}

group 'org.springframework'
version '5.2.14.BUILD-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

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

我们还是使用配置xml的方式创建一个测试案例

public class User {

	private String name;
	private String address;

	public String getName() {
		return name;
	}

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

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	@Override
	public String toString() {
		return "User{" +
				"name='" + name + '\'' +
				", address='" + address + '\'' +
				'}';
	}
}

<?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="user" class="com.tenic.spring.demo1.User">
		<property name="name" value="tenic"/>
		<property name="address" value="www.cnblogs.com/tenic"/>
	</bean>

</beans>


public class AppTest {

	public static void main(String[] args) {
		ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
		User bean = ac.getBean(User.class);
		System.out.println(bean.toString());

		TestBean testBean = (TestBean) ac.getBean("testBean");
		System.out.println(testBean.getTestStr());
	}
}