为什么我得到“没有找到汇编描述符。”构建此项目时出错?

时间:2016-03-29 19:38:21

标签: java maven maven-3 kotlin maven-assembly-plugin

我在Kotlin写了一点project。当我运行clean compile assembly:single install时,出现以下错误消息:

Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-5:single 
(default-cli) on project alma-econsim: Error reading assemblies: No assembly 
descriptors found. -> [Help 1]

我的jar-with-dependencies.xml位于src/main/assembly,并在pom.xml中引用,如下所示:

<plugin>
    <artifactId>maven-assembly-plugin</artifactId>
    <version>2.2-beta-5</version>
    <executions>
        <execution>
            <id>assembly</id>
            <goals>
                <goal>single</goal>
            </goals>
            <phase>package</phase>
            <configuration>
                <descriptors>
                    <descriptor>src/main/assembly/jar-with-dependencies.xml</descriptor>
                </descriptors>
            </configuration>
        </execution>
    </executions>
</plugin>

但我仍然得到错误。如何更正我的项目以便能够将其打包为具有依赖关系的jar?

1 个答案:

答案 0 :(得分:9)

首先使用maven-assembly-plugin的最新版本,而不是古代版本...此外,您应该通过mvn clean package调用它,因为您将maven-assembly-plugin绑定到package生命循环阶段...如果你试图做mvn ... assembly:single你没有调用生命周期...除此之外你想使用jar-with-dependencies描述符,你应该这样做:

<project>
  [...]
  <build>
    [...]
    <plugins>
      <plugin>
        <!-- NOTE: We don't need a groupId specification because the group is
             org.apache.maven.plugins ...which is assumed by default.
         -->
        <artifactId>maven-assembly-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <descriptorRefs>
            <descriptorRef>jar-with-dependencies</descriptorRef>
          </descriptorRefs>
        </configuration>
        [...]
</project>

除此之外,如果你像这样打电话给Maven:

mvn clean compile assembly:single install

比你调用编译阶段double,只是简单地说:

mvn clean install 

就足够了。我可以推荐阅读build life doc.