问题1 . 下载插件或者gradle以及gradle plus有问题

        报错：Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.3.0-RC

解决方法：使用如下配置

settings.gradle的 pluginManagement下 repositories是插件的依赖或者插件的下载地址

pluginManagement {
	repositories {
		maven {
			url "https://plugins.gradle.org/m2/"
		}
		maven { url 'https://repo.spring.io/milestone' }
		gradlePluginPortal()
	}
}
rootProject.name = 'demo'

build.gradle的  repositories是项目的依赖的

推荐配置

plugins {
	id 'java'
	id 'org.springframework.boot' version '3.2.5'
	id 'io.spring.dependency-management' version '1.1.4'
}

group = 'com.doushuang'
version = '0.0.1-SNAPSHOT'

java {
	sourceCompatibility = '17'
}

repositories {
//	maven {
//		url "https://mvn.cloud.alipay.com/nexus/content/repositories/open/"
//	}
	maven{
		allowInsecureProtocol = true
		url 'http://maven.aliyun.com/nexus/content/groups/public/'
	}
//	maven{url 'http://maven.aliyun.com/nexus/content/repositories/google'}

	mavenCentral()
	maven { url 'https://repo.spring.io/milestone' }
}

dependencies {
	implementation 'org.springframework.boot:spring-boot-starter'
	testImplementation 'org.springframework.boot:spring-boot-starter-test'
}

tasks.named('test') {
	useJUnitPlatform()
}

问题2 . Could not resolve all dependencies for configuration ':detachedConfiguration5'.

解决：

如上配置  添加 allowInsecureProtocol = true

	maven{
		allowInsecureProtocol = true
		url 'http://maven.aliyun.com/nexus/content/groups/public/'
	}