无法在 Maven 依赖管理中找到 jar

Unable to locate the jar in Maven Dependency Management

我有 2 个项目 testing.parenttesting.child。 项目结构如下:

他们各自的pom如下:

testing.parent

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>testing.group</groupId>
    <artifactId>testing.parent</artifactId>
    <version>1.0</version>
    <packaging>pom</packaging>
    <name>testing.parent</name>
    <url>http://maven.apache.org</url>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>1.2.17</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>    

testing.child

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>testing.group</groupId>
    <artifactId>testing.child</artifactId>
    <version>1.1</version>
    <packaging>jar</packaging>
    <name>testing.child</name>
    <url>http://maven.apache.org</url>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>testing.group</groupId>
                <artifactId>testing.parent</artifactId>
                <version>1.0</version>
                <scope>import</scope>
                <type>pom</type>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

为了测试 dependency management 我尝试 importlog4j jar 添加到 child 项目,但该 jar 在子项目中仍然不可用。这是导入罐子的正确方法吗?

Is this the correct way to import the jars?

,在childpom.xmldependency部分包含log4j。

<dependencies>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version> <!-- version is optional when using dependency management -->
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>3.8.1</version>
        <scope>test</scope>
    </dependency>
</dependencies>

此外,请务必参考 child 中的 parent,为此在 child pom.xml 中包含以下内容:

<parent>
    <artifactId>testing.parent</artifactId>
    <groupId>testing.group</groupId>
    <version>1.0</version>
</parent>

确保 parent pom.xml 中的引用与

相似
<modules>
    <module>testing.child</module>
</modules>

如果将以下部分添加到子 pom.xml 文件中,则不需要通过子 pom.xml 单独导入 lof4j 依赖项。

<parent>
    <artifactId>testing.parent</artifactId>
    <groupId>testing.group</groupId>
    <version>1.0</version>
</parent>