java - couchbase java 客户端 1.2.* 因 maven 依赖而失败

Question

我正在尝试根据 this tutorial 创建一个基本的 java-couchbase hello world 应用程序.

将以下依赖项添加到我的 pom.xml 中:

<dependencies>
    <dependency>
        <groupId>couchbase</groupId>
        <artifactId>couchbase-client</artifactId>
        <version>1.2.1</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.2.2</version>
    </dependency>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-web-api</artifactId>
        <version>6.0</version>
        <scope>provided</scope>
    </dependency>
</dependencies>

但随后我在 pom.xml 中收到此错误:

ArtifactDescriptorException: Failed to read artifact descriptor for
couchbase:couchbase-client:jar:1.2.1: ArtifactResolutionException: 
Failure to transfer couchbase:couchbase-client:pom:1.2.1 from 
http://repo.maven.apache.org/maven2 was cached in the local 
repository, resolution will not be reattempted until the update interval 
of central has elapsed or updates are forced. Original error: Could 
not transfer artifact couchbase:couchbase-client:pom:1.2.1 from/to 
central (http://repo.maven.apache.org/maven2): null to 
http://repo.maven.apache.org/maven2/couchbase/couchbase-client/1.2.1/couchbase-client-1.2.1.pom

我可以看到 jar 存在 in maven central distribution ，我不明白为什么会出现此错误以及如何克服它。

Answer 1

关于错误的异常非常简单:

Failure to transfer couchbase:couchbase-client:pom:1.2.1 from 
http://repo.maven.apache.org/maven2 was cached in the local repository

然后它说明应该如何解决这个问题:

resolution will not be reattempted until the update interval of central has 
elapsed or updates are forced. 

为了FORCE更新使用参数-U

 -U,--update-snapshots    Forces a check for updated
                          releases and snapshots on remote
                          repositories

来自 mvn --help 选项。