无法执行目标 org.apache.maven.plugins:maven-dependency-plugin:2.10

Question

尝试installMaven 项目时出现此错误：

[错误] 无法在项目功能测试中执行目标 org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functions-tests: Dependency Problems found -> [Help 1]

它出现在集成测试之后，在该verify阶段。由于日志提供的其他信息不多，我几乎无法猜测该在哪里查看。我尝试使用-X参数运行 maven 以进行更深入的了解，但这是唯一出现的错误。在详细日志中出现错误之前，我看到的最后一件事是下面的警告（我怀疑与错误有关）：

[WARNING] Used undeclared dependencies found:
[WARNING]    javax.activation:activation:jar:1.1:test
[WARNING] Unused declared dependencies found:
[WARNING]    org.slf4j:slf4j-log4j12:jar:1.7.6:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 27.090 s
[INFO] Finished at: 2017-06-28T10:58:54+08:00
[INFO] Final Memory: 60M/1042M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
    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:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
    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.apache.maven.plugin.MojoExecutionException: Dependency problems found
    at org.apache.maven.plugin.dependency.analyze.AbstractAnalyzeMojo.execute(AbstractAnalyzeMojo.java:260)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 20 more
[ERROR] 
[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/MojoExecutionException

什么可能导致这个问题？

更新：我已经解决了导致上述警告的问题，它确实有助于消除错误。现在我只是想知道为什么使用未声明的依赖项或声明未使用的依赖项会导致整个构建失败？

UPDATE2：将slf4j范围更改为runtime也解决了问题。

Answer 1

其原因在于：

[WARNING] Used undeclared dependencies found:
[WARNING]    javax.activation:activation:jar:1.1:test
[WARNING] Unused declared dependencies found:
[WARNING]    org.slf4j:slf4j-log4j12:jar:1.7.6:compile

您应该删除org.slf4j:slf4j-log4j12依赖项并添加javax.activation:activation依赖项。

Answer 2

显然，使用的未声明依赖项警告是我问题的罪魁祸首。将依赖项显式添加到 pom 文件后，问题就解决了。