Maven项目中缺少神器?

时间:2013-07-11 18:37:16

标签: java eclipse maven

我正在尝试遵循MapR / Hadoop教程,当我引用此依赖项时,它会说缺少工件。有关如何解决此问题的任何建议吗?

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>FirstHadoopProject</groupId>
    <artifactId>FirstHadoopProject</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.apache.hadoop</groupId>
            <artifactId>hadoop-core</artifactId>
            <version>1.0.3-mapr-2.1.2.1</version>
        </dependency>
    </dependencies>
</project>

它突出了依赖性并说:缺少工件org.apache.hadoop:hadoop-core:jar:1.0.3-mapr-2.1.2.1

教程没有说明如果发生这种情况该怎么做:/

1 个答案:

答案 0 :(得分:1)

1.0.3-mapr-2.1.2.1不是中央存储库中的有效版本。尝试将依赖项更新为:

    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-core</artifactId>
        <version>1.0.3</version>
    </dependency>

或者更好的是,如果该示例仍将编译,则为hadoop-core的最新版本:

    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-core</artifactId>
        <version>1.2.0</version>
    </dependency>

修改

您可以通过中央仓库检查版本:

http://search.maven.org/#search%7Cga%7C1%7Ca%3A%22hadoop-core%22