Question

我刚遇到一个非常奇怪的依赖问题，以前从未见过。

我有一个父项目，该项目在dependencyManagement中声明了Netty库的版本：

<dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-bom</artifactId>
    <version>4.1.29.Final</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>

我有一些子模块声明对Netty JAR的依赖，例如：

<dependency>
    <groupId>io.netty</groupId>
    <artifactId>netty-transport</artifactId>
</dependency>

由于某些原因，保留的Netty版本为4.1.27。最终并且在任何地方都没有提及！

我认为Eclipse可能是造成此问题的原因，所以我尝试在命令行上使用mvn可执行文件-一样。我以为可能与本地Maven存储库中已安装的POM / JAR冲突，所以我删除了com目录中的整个目录-同样。

我不知道这是怎么回事-从未见过Maven这样的行为。

使用Eclipse，如果我查看父项目的有效POM，则会在dependencyManagement内看到所有具有 4.1.27.Final 版本的Netty依赖项。但是我不知道它从哪里得到这些依赖...

父POM（仅依赖关系和dependencyManagement）：

<dependencies>
    <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.3</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.session</groupId>
            <artifactId>spring-session-bom</artifactId>
            <version>Apple-SR1</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring.boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <!-- Apache Commons -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.8</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.5</version>
        </dependency>
        <dependency>
            <groupId>commons-cli</groupId>
            <artifactId>commons-cli</artifactId>
            <version>1.4</version>
        </dependency>

        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-bom</artifactId>
            <version>1.11.401</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>${c3p0.version}</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.connector.version}</version>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>io.netty</groupId>
            <artifactId>netty-bom</artifactId>
            <version>4.1.29.Final</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>dnsjava</groupId>
            <artifactId>dnsjava</artifactId>
            <version>2.1.8</version>
        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>26.0-jre</version>
        </dependency>

        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${aspectjrt.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>

儿童POM：

<dependencies>
    <!-- dependency to other child modules -->

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jetty</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-json</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-websocket</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-messaging</artifactId>
    </dependency>

    <dependency>
        <groupId>org.eclipse.jetty.websocket</groupId>
        <artifactId>websocket-client</artifactId>
    </dependency>

    <dependency>
        <groupId>io.netty</groupId>
        <artifactId>netty-transport</artifactId>
    </dependency>

    <dependency>
        <groupId>commons-cli</groupId>
        <artifactId>commons-cli</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
    </dependency>

    <dependency>
        <groupId>dnsjava</groupId>
        <artifactId>dnsjava</artifactId>
    </dependency>

    <dependency>
        <groupId>com.github.kenglxn.qrgen</groupId>
        <artifactId>javase</artifactId>
        <version>2.4.0</version>
    </dependency>

    <dependency>
        <groupId>com.google.guava</groupId>
        <artifactId>guava</artifactId>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
    </dependency>

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
    </dependency>
</dependencies>

Answer 1

它也来自spring-boot-dependencies，它也声明了netty-bom。也许更改顺序会有所帮助。您也可以排除它。

Maven Phantom管理的依赖项

1 个答案: