找不到 org.springframework.boot:spring-boot-dependencies:2.6.1

Question

我按照here 的说明获取最新的spring.framework.boot 插件。

我的build.gradle 有

plugins {
  id 'java-library'
  id 'eclipse'
  id 'io.spring.dependency-management' version '1.0.11.RELEASE'
  id 'org.springframework.boot' version '2.6.2'
  id 'org.springframework.boot.experimental.thin-launcher' version '1.0.23.RELEASE'
}

但是 gradle 任务有错误

> Could not resolve all dependencies for configuration ':detachedConfiguration1'.
   > Could not find org.springframework.boot:spring-boot-dependencies:2.6.2.

更新我忽略了添加错误描述的最后几行，实际上这对于回答它很重要。

 Searched in the following locations:
   - https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-dependencies/2.6.2/spring-boot-dependencies-2.6.2.pom
   - https://repo.spring.io/milestone/org/springframework/boot/spring-boot-dependencies/2.6.2/spring-boot-dependencies-2.6.2.pom

Answer 1

这是一个完整的文件作为示例：（这是 ROOT build.gradle）（如果您编写单体应用程序，您将只有一个 root build.gradle，如果您编写多个“gradle 模块”，您将将有一个根和子项目 build.gradle 文件）（如果您不知道我在说什么，请参阅底部的 docs.gradle.org 链接）

（您可以删除依赖项，但我更愿意提供完整的工作）

plugins {
    id 'org.springframework.boot' version '2.6.2'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
}

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '11'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-actuator'
    implementation 'org.springframework.boot:spring-boot-starter-batch'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-data-ldap'
    implementation 'org.springframework.boot:spring-boot-starter-integration'
    implementation 'org.springframework.boot:spring-boot-starter-oauth2-client'
    implementation 'org.springframework.boot:spring-boot-starter-oauth2-resource-server'
    implementation 'org.springframework.boot:spring-boot-starter-security'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-web-services'
    implementation 'org.springframework.boot:spring-boot-starter-webflux'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    implementation 'com.h2database:h2'
    implementation 'mysql:mysql-connector-java'


    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    testImplementation 'io.projectreactor:reactor-test'
    testImplementation 'org.springframework.batch:spring-batch-test'
    testImplementation 'org.springframework.integration:spring-integration-test'
    testImplementation 'org.springframework.security:spring-security-test'
}

test {
    useJUnitPlatform()
}


allprojects {

    /* custom task to show dependencies.  run "gradle printAllDependencies" from commandline.  see https://stackoverflow.com/questions/44266687/how-to-print-out-all-dependencies-in-a-gradle-multi-project-build/54436979#54436979 */
    task printAllDependencies(type: DependencyReportTask) {}

}

或者，您可以尝试“gradle FLUSH”

Gradle FLUSH Cache
(Optional, but preferred).  Close all instances of IntelliJ or any other Java IDE.

./gradlew --stop        
      OR
gradle --stop

(now delete the folders)

rm -rf $HOME/.gradle/caches/

rm -rf $HOME/.gradle/build-cache-tmp/

(now resume normal gradlew commands like:)

./gradlew clean build

或者，你可以做一个 intelliJ "FLUSH"

(tested with IntelliJ version 2020.1 or later)
    Close IntelliJ.
    Delete the ".idea" folder off of the root folder.
    Re OPEN the project.
    Wait for Gradle imports and indices rebuild to complete
    Try the IDE build again.

And the big hammer: "Invalidate IntelliJ caches".  see https://www.jetbrains.com/help/rider/Cleaning_System_Cache.html and/or https://www.jetbrains.com/help/idea/invalidate-caches.html

如果您使用的是 Eclipse 或 NetBeans 或其他，则必须找到“等价物”。这个想法是 IDE 变得“混乱”。

奖金

多 Gradle 模块：

https://docs.gradle.org/current/samples/sample_building_java_applications_multi_project.html

Answer 2

感谢上面的@granadaCoder，在将 Gradle 重新安装到最新版本 7.3.3 后，实际问题是第二个存储库设置已经潜入我的 build.gradle

repositories {
  maven { url "https://repo.spring.io/snapshot" }
  maven { url "https://repo.spring.io/milestone" }
}

这正是错误表明未找到依赖项的地方。我把它改成了

repositories {
  mavenCentral()
}

然后事情就开始起作用了。