从 Spring Boot 1.5.10 迁移到 2.0.0 时无法解析依赖项

Question

所以，我将我的基本应用程序从 Spring Boot 1.5.10 迁移到了 2.0.0。我正在使用 Gradle，在迁移之前，我总是排除编译依赖项的工件的版本号。迁移后，gradle build task 开始抛出如下错误：

BUILD FAILED in 0s
2 actionable tasks: 1 executed, 1 up-to-date

During the build, one or more dependencies that were declared without a version failed to resolve:
    org.springframework.boot:spring-boot-starter-data-rest:
    org.springframework.boot:spring-boot-starter-web:
    org.springframework.boot:spring-boot-starter-data-jpa:

Did you forget to apply the io.spring.dependency-management plugin to the llutrackr project?

我的build.gradle（我排除了不相关的部分）：

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.0.RELEASE")
    }
}

dependencies {
    compile("org.springframework.boot:spring-boot-starter-data-rest")
    compile('org.springframework.boot:spring-boot-starter-data-jpa')
    compile('org.springframework.boot:spring-boot-starter-web')
}

我给对应的依赖加上版本号后，问题就解决了。为什么使用 gradle 构建 Spring Boot 2.0 项目需要进行此更改？即使是弹簧指南也不包括工件版本号。 An example

Answer 1

尝试将以下内容添加到您的 build.gradle 文件中

apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

https://docs.spring.io/spring-boot/docs/2.0.0.BUILD-SNAPSHOT/gradle-plugin/reference/html/