Gradle fails to resolve spring dependency - maven

Question

I am trying to build my project with the following build.gradle file.
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath('org.springframework.boot:spring-boot-gradle-plugin:1.2.1.RELEASE')
}
}
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'spring-boot'
repositories {
maven {
url 'https://repo.spring.io/milestone'
}
mavenCentral()
}
dependencies {
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.boot:spring-boot-starter-data-mongodb:1.2.2.RELEASE')
compile('org.springframework.data:spring-data-mongodb:1.7.0.RC1')
compile('org.springframework.cloud:spring-cloud-spring-service-connector')
compile('org.springframework.cloud:spring-cloud-cloudfoundry-connector')
compile 'org.springframework:spring-test:4.1.5.RELEASE'
compile 'de.grundid.opendatalab:geojson-jackson:1.3'
compile 'com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.5.1'
compile 'org.apache.httpcomponents:httpclient:4.4'
testCompile('junit:junit')
}
task wrapper(type: Wrapper) {
gradleVersion = '2.3'
}
I added the milestone repository because I need the spring-data-mongodb 1.7.0.RC1 dependency. However, there seems to be something wrong with the references of the parent-poms because gradle is unable to fetch the following dependency: org.springframework.data.build:spring-data-parent:1.6.0.RC1
It exits with the following error:
Could not find org.springframework.data.build:spring-data-parent:1.6.0.RC1.
Searched in the following locations:
https://repo.spring.io/milestone/org/springframework/data/build/spring-data-parent/1.6.0.RC1/spring-data-parent-1.6.0.RC1.pom
https://repo.spring.io/milestone/org/springframework/data/build/spring-data-parent/1.6.0.RC1/spring-data-parent-1.6.0.RC1.jar
https://repo1.maven.org/maven2/org/springframework/data/build/spring-data-parent/1.6.0.RC1/spring-data-parent-1.6.0.RC1.pom
https://repo1.maven.org/maven2/org/springframework/data/build/spring-data-parent/1.6.0.RC1/spring-data-parent-1.6.0.RC1.jar
The output of the gradlew build --debug command can be found here: http://pastebin.com/seYRMFQP
The command additionally produced the following output to stdout: http://pastebin.com/atcWQsKF
I already tried to clean my local gradle cache but it did not resolve the problem.

Answer 1

Sorry for the inconvenience, the artifact is currently misplaced in the release repository, though it should be in milestone.
We'll move it to milestone asap. Until that happens please add the release repository url 'https://repo.spring.io/release' to your build.

Answer 2

seems the repositories you defined in your build do not contain the libraries you're looking for. but it seems the lib is available in jcenter. to add jcenter add the following snippet to your build.gradle file:
repositories {
jcenter()
}
cheers,
René