http://repo.spring.io/webapp/mavensettings.html?21

Maven Releases

<repositories>
    <repository>
        <id>repository.springsource.release</id>
        <name>Spring GA Repository</name>
        <url>http://repo.spring.io/release</url>
    </repository>
</repositories>

Maven Milestones and Release Candidates

<repositories>
    <repository>
        <id>repository.spring.milestone</id>
        <name>Spring Milestone Repository</name>
        <url>http://repo.spring.io/milestone</url>
    </repository>
</repositories>

Maven Snapshots

<repositories>
    <repository>
        <id>repository.spring.snapshot</id>
        <name>Spring Snapshot Repository</name>
        <url>http://repo.spring.io/snapshot</url>
    </repository>
</repositories>

参考：
   http://www.baeldung.com/spring-maven-repository

Spring Maven Repositories