spring源码导入_id 'com.gradle.build-scan' version '3.2

构建过两次spring的源码，第一次很顺利就完成了，第二次倒是遇到了不少问题。记录一下

需要注意的几点：

• gradle的版本选择，需要跟下载的spring源码对应，具体在gradle/wrapper/gradle-wrapper.properties
  的distributionUrl中指出 distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-bin.zip
  gradle版本一开始我选择的是6.0.11版本，在build的时候由于gradle版本太高，id 'com.gradle.build-scan' version '3.2'这个插件无法下载
  还有需要注意idea版本和gradle版本的兼容性，亲测2018版的idea不兼容gradle 5.6，而spring 5.2.8版本的编译又要求gradle版本不低于5.6，后来我升级idea到2020才没有问题
• build的过程中，遇到了以下错误

Build file 'F:\idea_code\enjoy\spring源码相关\spring-source-5.2.8\build.gradle' line: 6

Error resolving plugin [id: 'io.spring.gradle-enterprise-conventions', version: '0.0.2']
> Could not resolve all dependencies for configuration 'detachedConfiguration5'.
   > Could not determine artifacts for io.spring.gradle-enterprise-conventions:io.spring.gradle-enterprise-conventions.gradle.plugin:0.0.2
      > Could not get resource 'https://repo.spring.io/plugins-release/io/spring/gradle-enterprise-conventions/io.spring.gradle-enterprise-conventions.gradle.plugin/0.0.2/io.spring.gradle-enterprise-conventions.gradle.plugin-0.0.2.jar'.
         > Could not HEAD 'https://repo.spring.io/plugins-release/io/spring/gradle-enterprise-conventions/io.spring.gradle-enterprise-conventions.gradle.plugin/0.0.2/io.spring.gradle-enterprise-conventions.gradle.plugin-0.0.2.jar'. Received status code 401 from server: Unauthorized

 
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不知道什么时候开始，从spring的官网仓库下载包或插件需要认证了，这里很明显的一个灭有授权的错误401，但是此时我的build.gradle以及setting.gradle是这样配置的：

	repositories {
			maven { url 'https://maven.aliyun.com/nexus/content/groups/public/' }
			maven { url 'https://maven.aliyun.com/nexus/content/repositories/jcenter'}
			mavenCentral()
			jcenter()
			google()
			maven { url "https://repo.spring.io/libs-spring-framework-build" }
		}
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	repositories {
		gradlePluginPortal()
		maven { url 'https://maven.aliyun.com/repository/public' }
		maven { url 'https://repo.spring.io/plugins-release' }
	}
	
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我已经加了阿里云的源，但似乎不起作用，还是首先去spring官网去加载，于是我只好先把spring的源注释掉，只保留阿里云的。这样开始下一步执行gradlew :spring-oxm:compileTestJava
先编译spring-oxm模块。编译成功之后，再导入到idea中点击build做全局编译。

• 此时还有一个问题，build.gradle中有个插件无法下载

plugins {
	id 'io.spring.dependency-management' version '1.0.8.RELEASE' apply false
	id 'org.jetbrains.kotlin.jvm' version '1.3.72' apply false
	id 'org.jetbrains.dokka' version '0.10.1' apply false
	id 'org.asciidoctor.jvm.convert' version '2.4.0'
//	id 'io.spring.gradle-enterprise-conventions' version '0.0.2'
	id 'io.spring.nohttp' version '0.0.5.RELEASE'
	id 'de.undercouch.download' version '4.0.0'
	id 'com.gradle.build-scan' version '3.2'
	id "com.jfrog.artifactory" version '4.12.0' apply false
	id "io.freefair.aspectj" version '4.1.1' apply false
	id "com.github.ben-manes.versions" version '0.24.0'
}
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就是注释掉的那个id ‘io.spring.gradle-enterprise-conventions’ version ‘0.0.2’，可以先注释掉

• plugin with id ‘java-test-fixtures‘ not found
  gradle版本要求在5.6.4-6.0之间

• 这时候大部分模块都编译好了，只剩下一个spring-tx包，它依赖了一个包我这里找不到资源，

Could not find com.ibm.websphere:uow:6.0.2.17.
Required by:
    project :spring-tx

Possible solution:
 - Declare repository providing the artifact, see the documentation at https://docs.gradle.org/current/userguide/declaring_repositories.html

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这时候可以再把前面注释掉的spring官网的源给放开，就下载下来了。