java - 使用 mvn install 命令更新 Maven 最新版本失败

Question

我使用的是最新版本的MAVEN。我必须使用 MAVEN 构建我的项目。我的第一个项目是一个基于模块的项目，有两个模块。该项目的父 POM 包含 2 个子 POMS。我将通过命令提示符将版本作为变量传递，以使此构建独立于静态版本。

我的父 POM 看起来像:

<modelVersion>4.0.0</modelVersion>
<groupId>A.B.C</groupId>
<artifactId>D</artifactId>
<version>${major.version}.${build.version}</version>
<packaging>pom</packaging>

<!-- Some further code-->

一个模块的 POM 如下:

<parent>
    <groupId>A.B.C</groupId>
    <artifactId>D</artifactId>
    <version>${major.version}.${build.version}</version>
</parent>

**<groupId>A.B.C</groupId> 
<artifactId>E</artifactId>**
<version>${major.version}.${build.version}</version>

<!-- Some further code-->

第二个模块的 POM 如下:

<parent>
    <groupId>A.B.C</groupId>
    <artifactId>F</artifactId>
    <version>${major.version}.${build.version}</version>
</parent>

**<groupId>A.B.C</groupId> 
<artifactId>G</artifactId>**
<version>${major.version}.${build.version}</version>

<!-- Some further code-->

我的第二个项目在其 POM 中使用上述依赖项，例如:

<modelVersion>4.0.0</modelVersion>
<groupId>A.B.C</groupId>
<artifactId>T</artifactId>
<version>0.0.1</version>

<packaging>jar</packaging>

<dependencies>

    <dependency>
        **<groupId>A.B.C</groupId> 
        <artifactId>E</artifactId>
        <version>LATEST</version>**
    </dependency>

    <dependency>
        **<groupId>A.B.C</groupId> 
        <artifactId>G</artifactId>
        <version>LATEST</version>**
    </dependency>

但是在使用mvn clean install时，它会给出错误

[错误] 无法在项目 T 上执行目标:无法解析项目的依赖关系原因:org.eclipse.aether.resolution.ArtifactResolutionException:无法从/到 nexus-all-repos 传输 Artifact A.B.C:D:pom:${major.version}.${build.version} :IllegalArgumentException

但是如果我使用命令mvn versions:use-latest-versions，它就可以正常工作。我想使用 mvn install 因为我只想对某些依赖项使用最新版本。

可能是什么问题？

添加完整的错误堆栈

   [ERROR] Failed to execute goal on project T: Could not resolve dependencies for project A.B.C:T:jar:5.6.0.15: Failed to collect dependencies at A.B.C:E:jar:LATEST: Failed to read artifact descriptor for A.B.C:E:jar:LATEST: Could not tran
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal on project T: Could not resolve dependencies for project A.B.C:T:jar:5.6.0.15: Failed to collect dependencies at A.B.C:E:jar:LATEST
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:220)
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.resolveProjectDependencies(LifecycleDependencyResolver.java:127)
        at org.apache.maven.lifecycle.internal.MojoExecutor.ensureDependenciesAreResolved(MojoExecutor.java:257)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:200)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
        at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
        at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
        at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
        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:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        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.apache.maven.project.DependencyResolutionException: Could not resolve dependencies for project A.B.C:T:jar:5.6.0.15: Failed to collect dependencies at A.B.C:E:jar:LATEST
        at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:167)
        at org.apache.maven.lifecycle.internal.LifecycleDependencyResolver.getDependencies(LifecycleDependencyResolver.java:195)
        ... 22 more
Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to collect dependencies at A.B.C:E:jar:LATEST
        at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:292)
        at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:317)
        at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:159)
        ... 23 more
Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for A.B.C:E:jar:LATEST
        at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:384)
        at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:231)
        at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:461)
        at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:261)
        ... 25 more
Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Could not transfer artifact A.B.C:D:pom:${major.version}.${build.version} from/to nexus-all-repos (http://eqmavenrepo.technologic.com/nexus/content/groups/allrepo/): IllegalArgumentException
        at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:170)
        at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:219)
        at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.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.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:375)
        ... 28 more
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Could not transfer artifact A.B.C:D:pom:${major.version}.${build.version} from/to nexus-all-repos (http://eqmavenrepo.technologic.com/nexus/content/groups/allrepo/): IllegalArgumentException
        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.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:166)
        ... 33 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact A.B.C:D:pom:${major.version}.${build.version} from/to nexus-all-repos (http://eqmavenrepo.technologic.com/nexus/content/groups/allrepo/): IllegalArgumentException
        at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$6.wrap(WagonRepositoryConnector.java:1016)
        at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$6.wrap(WagonRepositoryConnector.java:1004)
        at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:725)
        at org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.IllegalArgumentException
        at java.net.URI.create(URI.java:842)
        at org.apache.maven.wagon.providers.http.httpclient.client.methods.HttpGet.<init>(HttpGet.java:69)
        at org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:841)
        at org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)
        at org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
        at org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
        at org.eclipse.aether.connector.wagon.WagonRepositoryConnector$GetTask.run(WagonRepositoryConnector.java:660)
        ... 4 more
Caused by: java.net.URISyntaxException: Illegal character in path at index 119: http://eqmavenrepo.technologic.com/nexus/content/groups/allrepo/A/B/C/D/${major.version}.${build.version}/D-${major.version}.${build.version}.pom
        at java.net.URI$Parser.fail(URI.java:2809)
        at java.net.URI$Parser.checkChars(URI.java:2982)
        at java.net.URI$Parser.parseHierarchical(URI.java:3066)
        at java.net.URI$Parser.parse(URI.java:3014)
        at java.net.URI.<init>(URI.java:578)
        at java.net.URI.create(URI.java:840)
        ... 10 more
[ERROR]
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

删除非法字符后仍然出现错误

Answer 1

这不是 Maven 的工作方式。不要将 POM 视为单纯的构建脚本，而更多地将其视为与 Artifact 一起交付的交付单，解释了它如何与世界其他地方连接，例如就依赖关系和如何它构建(注意过去时态)而言，而不是如何构建它，就像 Ant 一样。

问题是 if Maven 将允许您在安装时参数化 ${major.version}.${build.version} 并使用它们作为坐标/deploys 它可能能够做正确的事情并将您的 Artifact 部署到http://.../E/X.Y/E-X.Y.pom(如果您使用mvn -Dmajor.version=X -Dbuild.version=Y ...)。

但是问题稍后就会出现。另一个用户可能正确下载您的 Artifact ，但是当 Maven 尝试解析 POM 时，它将遇到 ${major.version}.${build.version} 并且不会'不知道该怎么做，因为实际值是您在部署时提供的，但在此过程中丢失了。

这就是为什么 Maven 坐标需要固定并且不能用属性推断的原因；它为您(也许更重要的是，任何其他依赖者)提供控制和可追溯性。当然，其他非坐标属性可以随心所欲地参数化，只是坐标对此更敏感。

Maven coordinates uses five values, three of them more common than the other: groupId, artifactId and version. The other two are packaging and classifier, but are used for more exotic use-cases.

如果您打算使用 Maven，我建议您重新考虑您的构建方法。它的学习曲线很陡峭，但从顶部看到的景色很壮丽。使用 Maven 发布 Artifact 最好通过，例如 Maven Release plugin 来完成。 .