Maven：无法解析的父POM和“parent.relativePath”指向错误的本地POM。

Question

Maven：无法解析的父POM和“parent.relativePath”指向错误的本地POM。

59

我正在使用Maven 3运行应用程序，但是出现了以下错误：

[ERROR] The build could not read 1 project -> [Help 1]
org.apache.maven.project.ProjectBuildingException: Some problems were encountered while processing the POMs:
[FATAL] Non-resolvable parent POM: Failure to find com.topdesk:tis-parent:pom:3.
4 in https://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 and 'parent.relativePath' points at wrong local POM @ line 3, column 11
at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:416)
at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:663)
    at org.apache.maven.DefaultMaven.getProjectsForMavenReactor(DefaultMaven.java:654)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:243)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
[ERROR]
[ERROR]   The project com.topdesk.test.junitcategorizer:junitcategorizer:0.0.1-SNAPSHOT (D:\Masters\thesis related papers and tools\junitcategorizer\pom.xml) has 1 error
[ERROR]     Non-resolvable parent POM: Failure to find com.topdesk:tis-parent:pom:3.4 in https://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 and 'parent.relativePath' points at wrong local POM@ line 3, column 11 -> [Help 2]org.apache.maven.model.resolution.UnresolvableModelException: Failure to find com.topdesk:tis-parent:pom:3.4 in https://repo.maven.apache.org/maven2 was cachedin the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
    at org.apache.maven.project.ProjectModelResolver.resolveModel(ProjectModelResolver.java:187)
    at org.apache.maven.project.ProjectModelResolver.resolveModel(ProjectModelResolver.java:236)
    at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultodelBuilder.java:898)
    at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:750)
    at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:309)
    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:463)
    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:432)
    at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:396)
    at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:663)
    at org.apache.maven.DefaultMaven.getProjectsForMavenReactor(DefaultMaven.java:654)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:243)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to find com.topdesk:tis-parent:pom:3.4 in https://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
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:459)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:262)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:239)
    at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:295)
    at org.apache.maven.project.ProjectModelResolver.resolveModel(ProjectModelResolver.java:183)
    ... 22 more
Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Failure to find com.topdesk:tis-parent:pom:3.4 in https://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
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:232)
    at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:206)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:599)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:518)
    at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:436)
    ... 26 more

我有以下父POM文件（其中的一部分）:

<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.topdesk</groupId>
<artifactId>tis-parent</artifactId>
<version>3.4</version>
</parent>

<groupId>com.topdesk.test.junitcategorizer</groupId>
<artifactId>junitcategorizer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>JUnitCategorizer</name>

<modules>
<module>junitcategorizer.instrument</module>
<module>junitcategorizer.examples</module>
<module>junitcategorizer.reporter.maven</module>
<module>junitcategorizer.reporter.maven.site</module>
<module>junitcategorizer.cutdetection</module>
</modules>
<organization>
    <name>TOP Informatie Systemen bv</name>
    <url>http://www.topdesk.com/</url>
</organization>

<properties>
    <project.build.sourceEncoding>utf-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>utf-8</project.reporting.outputEncoding>
    <surefire.version>2.12</surefire.version>
</properties>

<prerequisites>
    <maven>3.0</maven>
</prerequisites>

我有以下子模块的pom文件：

 <modelVersion>4.0.0</modelVersion>
 <parent>
<artifactId>junitcategorizer</artifactId>
<groupId>com.topdesk.test.junitcategorizer</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>..</relativePath>
</parent>
<artifactId>junitcategorizer.cutdetection</artifactId>
<name>Analysis of parameters for the CUT detection algorithm</name>
<description>Analysis of parameters for the CUT detection algorithm</description>
<dependencies>
<dependency>
    <groupId>com.topdesk.test.junitcategorizer</groupId>
    <artifactId>junitcategorizer.instrument</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>

我尝试在父pom文件中注释下面的部分(我不知道这样做是否正确)，然后这个错误就消失了，但构建失败并出现这个错误。

<parent>
<groupId>com.topdesk</groupId>
<artifactId>tis-parent</artifactId>
<version>3.4</version>
</parent>

请帮助我！

谢谢。

- Srinu

它抱怨的是找不到com.topdesk:tis-parent（或者至少不是正确的版本）。在您的父POM中，您已将tis-parent指定为父POM的父级。问题是，这是否是您想要做的。实际上，tis-parent是junitcategorizer的父级吗？如果是，则需要找出为什么无法找到它。如果不是正确的父级，则应将其删除或替换为正确的父级。 - DanielBarbarian

我从公司中删除了“tis-parent”，所以现在这个错误已经消失了，但是我仍然有这个问题。 - Srinu

那是一个不同的错误。你应该看看那个问题中的Stefan Iseles答案！ - DanielBarbarian

所有可能的问题总结如下：https://dev59.com/e2Ij5IYBdhLWcg3wHhz_#62704660 - Sumit Badsara

9个回答

13

可能我有点晚参加这个聚会，但我在TOPdesk的毕业项目中编写了junitcategorizer。早期版本确实使用了公司内部的Parent POM。所以你的问题是由于Parent POM无法解决，因为它对外部世界不可用。

你可以选择：

删除<parent>块，但是需要自己配置Surefire、Compiler和其他插件
(仅适用于此特定情况！)将其更改为指向我们的开源Parent POM，方法是设置：

<parent>
    <groupId>com.topdesk</groupId>
    <artifactId>open-source-parent</artifactId>
    <version>1.2.0</version>
</parent>

- Joep Weijers

7

Java版本冲突。使用1.8版本的Maven后得到解决。

- vbnr

6

您可以尝试以下方法：

 <parent>
    <groupId></groupId>
    <artifactId></artifactId>
    <version></version>
  </parent>

这样父级jar包将从代码库中获取。

- Baskar Felix

3

在我的情况下，在尝试了上述所有选项后，我意识到问题出现在VPN（公司防火墙）上。一旦连接并运行cmd：clean install spring-boot：run，问题就解决了。

步骤1：检查maven是否被正确配置。

步骤2：检查settings.xml是否被正确映射。

步骤3：如果你在任何防火墙后面，请相应地映射你的repo urls。

步骤4：运行clean install spring-boot：run。

步骤5：问题已得到解决。

- Venugopal

1

在Windows上使用Maven 3.8.3时，只需明确指定父pom.xml的相对路径（../pom.xml）即可，例如：

<parent>
    <groupId>org.example</groupId>
    <artifactId>example</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <relativePath>../pom.xml</relativePath>
</parent>

唯一让我失望的是误导性文档。

引用Maven source关于relativePath的说明：

在检出中父pom.xml文件的相对路径。默认值为../pom.xml。[...]

现在，虽然文档说明了../pom.xml应该是默认值，但将<relativePath>../pom.xml</relativePath>替换为<relativePath/>会产生与问题报告中完全相同的错误。

- GOTO 0

-1

将以下内容添加到pom.xml中将解决此问题：

<pluginRepositories>
    <pluginRepository>
        <id>central</id>
        <name>Central Repository</name>
        <url>https://repo.maven.apache.org/maven2</url>
        <layout>default</layout>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
        <releases>
            <updatePolicy>never</updatePolicy>
        </releases>
    </pluginRepository>
</pluginRepositories>

<repositories>
    <repository>
        <id>central</id>
        <name>Central Repository</name>
        <url>https://repo.maven.apache.org/maven2</url>
        <layout>default</layout>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
</repositories>

- rafee shaik

-1

标签在您的计算机上搜索父POM。修复步骤：

将下面文件的内容复制到本地文件中（不要复制第一行）。 https://repo1.maven.org/maven2/org/springframework/boot/spring-boot-starter-parent/2.6.9/spring-boot-starter-parent-2.6.9.pom

将路径（在我的情况下是“C:/Users/bharat/.m2/repository_saml/org/springframework/boot/spring-boot-starter-parent/2.0.4”）复制并添加到您的pom.xml文件中，如下所示。

<parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
     <version>2.0.4</version>
     <relativePath>C:/Users/bharat/.m2/repository_saml/org/springframework/boot/spring-boot-starter-parent/2.0.4</relativePath>
</parent>

无论什么情况，这都能解决问题。

- bharat_Chandra

-2

删除现有的本地Maven存储库可以帮助解决此错误。

--> 删除~/.m2/repository

- Jeetu J

在保存凭证以下载一个构件的目录中，这如何解决错误呢？ - Adi Prasetyo

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可以查看英文原文，
原文链接

- Stefan Isele - prefabware.com · Accepted Answer

Maven多模块项目的常规布局如下：

parent
├── pom.xml
├── module
    ├── pom.xml

请确认您是否使用了这个布局。

此外：

the relativePath looks strange. Instead of '..'
```
<relativePath>..</relativePath>
```
try '../' instead:
```
<relativePath>../</relativePath>
```
You can also remove relativePath if you use the standard layout. This is what I always do, and on the command line I can build as well the parent (and all modules) or only a single module.
The module path may be wrong. In the parent you define the module as:
```
<module>junitcategorizer.cutdetection</module>
```
You must specify the name of the folder of the child module, not an artifact identifier. If junitcategorizer.cutdetection is not the name of the folder than change it accordingly.

希望这能有所帮助。

编辑请看另一篇帖子，我在那里回答了。