Maven程序集-读取程序集时出错
Maven程序集-读取程序集时出错
提问于 2010-03-17 23:50:53
我已经定义了一个个性化的带有依赖项的jar程序集描述符。但是，当我使用mvn assembly:assembly执行时，我得到：
...
[INFO] META-INF/ already added, skipping
[INFO] META-INF/MANIFEST.MF already added, skipping
[INFO] javax/ already added, skipping
[INFO] META-INF/ already added, skipping
[INFO] META-INF/MANIFEST.MF already added, skipping
[INFO] META-INF/maven/ already added, skipping
[INFO] [assembly:assembly {execution: default-cli}]
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error reading assemblies: No assembly descriptors found.我的jar-with-dependencies.xml在src/main/resources/assemblies/.中
我的程序集描述符如下：
<?xml version='1.0' encoding='UTF-8'?>
<assembly>
<id>jar-with-dependencies</id>
<formats>
<format>jar</format>
</formats>
<dependencySets>
<dependencySet>
<scope>runtime</scope>
<unpack>true</unpack>
<unpackOptions>
<excludes>
<exclude>**/LICENSE*</exclude>
<exclude>**/README*</exclude>
</excludes>
</unpackOptions>
</dependencySet>
</dependencySets>
<fileSets>
<fileSet>
<directory>${project.build.outputDirectory}</directory>
<outputDirectory>/</outputDirectory>
</fileSet>
<fileSet>
<directory>src/main/resources/META-INF/services</directory>
<outputDirectory>META-INF/services</outputDirectory>
</fileSet>
</fileSets>
</assembly>我的项目pom.xml是：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-5</version>
<executions>
<execution>
<id>jar-with-dependencies</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<descriptors>
<descriptor>jar-with-dependencies.xml</descriptor>
</descriptors>
<archive>
<manifest>
<mainClass>org.my.app.HowTo</mainClass>
</manifest>
</archive>
</configuration>
</execution>
</executions>
</plugin>当mvn assembly:assembly被执行时，依赖项被解包，并且当解包完成时我得到先前的错误。
此外，如果我执行META:assembly，它说没有找到描述符，但是它试图解包依赖项，并创建了一个具有依赖项JAR，但它不包含描述符中指定的META- -e /-e/*：
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error reading assemblies: No assembly descriptors found.
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Error reading assemblies: No assembly descriptors found.
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:284)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
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.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: Error reading assemblies: No assembly descriptors found.
at org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:356)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
... 17 more
Caused by: org.apache.maven.plugin.assembly.io.AssemblyReadException: No assembly descriptors found.
at org.apache.maven.plugin.assembly.io.DefaultAssemblyReader.readAssemblies(DefaultAssemblyReader.java:206)
at org.apache.maven.plugin.assembly.mojos.AbstractAssemblyMojo.execute(AbstractAssemblyMojo.java:352)
... 19 more我看不到我的错误。有人有解决方案吗？
回答 2
Stack Overflow用户
回答已采纳
发布于 2010-03-18 01:16:21
这里有两个问题。首先，当使用您自己的描述符时，您必须指定您的自定义描述符文件的路径(顺便说一句，您可以使用任何位置，但是将描述符放在src/main/resources中可能不是最好的选择，您并不希望将描述符打包到您的应用程序中，我会使用this page中提到的标准位置src/main/assembly )。
<descriptors>
<descriptor>src/main/assembly/jar-with-dependencies.xml</descriptor>
</descriptors>其次，您的configuration元素当前位于execution块中，因此特定于此执行。换句话说，如果您在命令行上运行assembly:assembly，它将不适用。因此，如果您想使用自定义描述符调用assembly:assembly，可以使用：
mvn assembly:assembly -Ddescriptor=path/to/descriptor.xml或者将configuration移到execution元素之外(以使配置成为全局配置)：
<project>
...
<build>
...
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2-beta-5</version>
<configuration>
<descriptors>
<descriptor>path/to/descriptor.xml</descriptor>
</descriptors>
...
</configuration>
</plugin>
</plugins>
...
</build>
...
</project>Stack Overflow用户
发布于 2010-07-20 00:36:47
程序集正在尝试打开类路径中的/assemblies/${ref}.xml检查这一点
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2463721
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