【发布时间】:2015-10-09 15:33:36
【问题描述】:
我是 Maven 的新手,正在学习教程。
在本教程中,我有以下 pom.xml 配置文件:
<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>com.denofprogramming</groupId>
<artifactId>maventutorial1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>MavenTutorial1</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>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<configuration>
<descriptors>
<descriptor>jar-with-dependencies</descriptor>
</descriptors>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-math3</artifactId>
<version>3.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
正如你在这个配置文件中看到的,它被声明为使用 assembly 插件,这部分:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<configuration>
<descriptors>
<descriptor>jar-with-dependencies</descriptor>
</descriptors>
</configuration>
</plugin>
作为 descripor 字段,它设置的值 jar-with-dependencies (据我所知)必须创建一个新的目标 jar 文件,其中还包含删除了我项目的 .jar 依赖项。
所以,进入 Eclipse,我选择我的项目和 Run as ---> Maven Build 并进入 Goal 输入部分 I写下这句话:
clean package assembly:single
必须清理我的项目的目标目录,创建包并调用 assembly 插件上的 single 目标,将 jar 依赖项放入我的最终 jar 目标我的项目的文件。
问题是这样做我会在 Eclipse 控制台中获得以下错误消息:
.......................................................
.......................................................
.......................................................
Results :
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ maventutorial1 ---
[INFO] Building jar: /home/andrea/git/maven-java-console-application/mvntutorial1/target/maventutorial1-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- maven-assembly-plugin:2.5.5:single (default-cli) @ maventutorial1 ---
[INFO] Reading assembly descriptor: jar-with-dependencies
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.767 s
[INFO] Finished at: 2015-07-20T15:12:19+01:00
[INFO] Final Memory: 19M/155M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.5.5:single (default-cli) on project maventutorial1: Error reading assemblies: Error locating assembly descriptor: jar-with-dependencies
[ERROR]
[ERROR] [1] [INFO] Searching for file location: /home/andrea/git/maven-java-console-application/mvntutorial1/jar-with-dependencies
[ERROR]
[ERROR] [2] [INFO] File: /home/andrea/git/maven-java-console-application/mvntutorial1/jar-with-dependencies does not exist.
[ERROR]
[ERROR] [3] [INFO] File: /home/andrea/git/maven-java-console-application/mvntutorial1/jar-with-dependencies does not exist.
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[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/MojoExecutionException
好像找不到这个文件:/home/andrea/git/maven-java-console-application/mvntutorial1/jar-with-dependencies
但是根据我对教程的理解,这不是一个配置文件,而是一个特定的 Maven 值,表示将所有 .jar 依赖项放入代表我打包项目的最终目标 jar 文件中。
为什么会出现这个错误?我错过了什么?我该如何解决?
【问题讨论】:
标签: java maven maven-3 maven-plugin maven-assembly-plugin