【问题标题】:Maven dependencyManagement WARNING on clean project generated from start.spring.io从 start.spring.io 生成的干净项目上的 Maven 依赖管理警告
【发布时间】:2017-07-09 22:07:30
【问题描述】:

我正在从 start.spring.io 创建一个 Spring Boot 1.5.1 项目,包括以下依赖项:Web、HATEOAS、Stream Kafka、Zookeeper Configuration、Zookeeper Discovery、Actuator。该服务本身是一个 spring-cloud-stream 测试服务。

在不更改生成代码的任何内容的情况下,mvn package 我收到了以下消息。这只是一个警告,但是自从编译其他 maven 项目后,我在其他项目中遇到了构建问题,我想解决它。 (我试图通过从 start.spring.io 创建这个干净的项目来隔离问题)。

这是确切的警告日志,在生成的pom.xml 下方。请注意,dependencyManagement 警告提到了com.netflix.eureka,但在此项目中没有包含 Eureka 依赖项。

我还尝试从本地 maven 存储库中删除所有内容并重新构建,以确保它处于一致状态但不断收到警告。

[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for eu.myapp.services.testsource:test:jar:0.0.1-SNAPSHOT
[WARNING] 'dependencyManagement.dependencies.dependency.exclusions.exclusion.artifactId' for com.netflix.eureka:eureka-core:jar with value '*' does not match a valid id pattern. @ org.springframework.cloud:spring-cloud-netflix-dependencies:1.3.0.BUILD-SNAPSHOT, /home/vagrant/.m2/repository/org/springframework/cloud/spring-cloud-netflix-dependencies/1.3.0.BUILD-SNAPSHOT/spring-cloud-netflix-dependencies-1.3.0.BUILD-SNAPSHOT.pom, line 273, column 19
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]

这里是pom.xml

    <?xml version="1.0" encoding="UTF-8"?>
<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>eu.myapp.services.testsource</groupId>
    <artifactId>test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>test</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-stream-binder-kafka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-hateoas</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.BUILD-SNAPSHOT</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

【问题讨论】:

    标签: maven spring-boot spring-cloud


    【解决方案1】:

    很可能该依赖项正在被另一个依赖项使用我建议您首先通过搜索您的依赖项树来找到问题。

    mvn dependency:tree
    

    看起来 spring-cloud-starter-zookeeper-discovery 可能是罪魁祸首 https://cloud.spring.io/spring-cloud-zookeeper/

    现在只需找出排除它的内容。你接下来要做的事情可能会变得很棘手,因为如果你排除它,zookeeper 现在可能不再工作了

    【讨论】:

    • 我尝试从依赖项中删除 spring-cloud-starter-zookeeper-discovery,但仍然收到警告(顺便删除了 spring-cloud-starter-zookeeper-config,结果相同)。此外,从dependency:tree 我看不到对尤里卡的引用。
    【解决方案2】:

    【讨论】:

    • 但是警告不应该出现在 Maven 3.2.1 或更高版本中:issues.apache.org/jira/browse/MNG-2315
    • 如果您使用 maven 包装器(如推荐的那样),您将使用 3.3.9 版
    • 是的。我只是用 3.1.1、3.2.5 和包装器尝试过,只有 3.1.1 给了我警告。所以 OP 接缝使用那个或旧版本的 Maven。
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