我正在尝试使用来自https://github.com/petrabarus/HiveUDFs的HiveUDF。我下载了UDF，打开了一个Cygwin终端，将目录（cd）更改为包含pom.xml的文件夹，然后运行mvn。它给出了错误，我根据Maven 3 warnings about build.plugins.plugin.version中第一个答案中的说明编辑了pom.xml。
我仍然遇到以下错误，尽管谷歌搜索，我仍然无法解决它们。
$ mvn -e
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for net.petrabarus.:HiveUDFs:jar:1.0-SN APSHOT
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-compiler-plugin is missing. @ line 18, column 33
[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]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.081 s
[INFO] Finished at: 2017-03-23T15:47:49-07:00
[INFO] Final Memory: 7M/180M
[INFO] ------------------------------------------------------------------------
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the form at <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile , process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, te st-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-inte gration-test, verify, install, deploy, pre-clean, clean, post-clean, pre-site, site, post-site, site-deploy. -> [He lp 1]
org.apache.maven.lifecycle.NoGoalSpecifiedException: No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or <plugin-group-id>:<plugin-artifact-id>[:< plugin-version>]:<goal>. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, g enerate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, genera te-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre- integration-test, integration-test, post-integration-test, verify, install, deploy, pre-clean, clean, post-clean, p re-site, site, post-site, site-deploy.
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:94)
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:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
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:498)
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] 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/NoGoalSpecifiedException
pom.xml：
<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>net.petrabarus.</groupId>
<artifactId>HiveUDFs</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>HiveUDFs</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>Sonatype-public</id>
<name>SnakeYAML repository</name>
<url>http://oss.sonatype.org/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-exec</artifactId>
<version>0.9.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-core</artifactId>
<version>1.1.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.jdo</groupId>
<artifactId>jdo2-api</artifactId>
<version>2.3-20090302111651</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>3.3.9</version>
</dependency>
</dependencies>
</project>
答案 0 :(得分：0)
[错误]没有为此版本指定目标
您必须在调用mvn命令时为Maven指定目标，或在defaultGoal
pom.xml
<project>
...
<build>
<defaultGoal>install</defaultGoal>
...
</build>
...
</project>
答案 1 :(得分：0)
使用
运行构建mvn install