maven依赖插件（目标“拷贝依赖”，“拆包”）不受m2e支持

本文介绍了maven依赖插件（目标“拷贝依赖”，“拆包”）不受m2e支持的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一个相当简单的Maven项目：

 < project> 
<依赖关系> 
 ... 
< / dependencies> 
 
< build> 
< plugins> 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-dependency-plugin< / artifactId> 
< version> 2.4< / version> 
<执行> 
< execution> 
< id> copy-dependencies< / id> 
< phase> package< / phase> 
< goals> 
< goal> copy-dependencies< / goal> 
< / goals> 
< configuration> 
< outputDirectory> $ {project.build.directory} / dependencies< / outputDirectory> 
< / configuration> 
< / execution> 
< / executions> 
< / plugin> 
< / plugins> 
< / build> 
< / project>

但是，我在m2eclipse中收到以下错误：

 描述资源路径位置类型
 maven-dependency-plugin（目标拷贝依赖，unpack）不受m2e支持。 pom.xml / jasperreports-test line 60 Maven项目构建生命周期映射问题

为什么我关心m2eclipse不支持这个任务吗？ Maven做，这就是我真正关心的。如何在我的项目中得到这个错误呢？

解决方案

这似乎是一个已知的问题。你可以指示m2e忽略这个。

选项1：pom.xml

在< build /> 标签：

 < pluginManagement> 
< plugins> 
<！ - 忽略/执行插件执行 - > 
< plugin> 
< groupId> org.eclipse.m2e< / groupId> 
< artifactId>生命周期映射< / artifactId> 
< version> 1.0.0< / version> 
< configuration> 
< lifecycleMappingMetadata> 
< pluginExecutions> 
<！ - 拷贝依赖插件 - > 
< pluginExecution> 
< pluginExecutionFilter> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-dependency-plugin< / artifactId> 
< versionRange> [1.0.0，）< / versionRange> 
< goals> 
< goal> copy-dependencies< / goal> 
< / goals> 
< / pluginExecutionFilter> 
< action> 
< ignore /> 
< / action> 
< / pluginExecution> 
< / pluginExecutions> 
< / lifecycleMappingMetadata> 
< / configuration> 
< / plugin> 
< / plugins>< / pluginManagement>

此后您将需要在项目中执行Maven ... - >更新项目配置。 / p>

阅读更多内容：

选项2：全局Eclipse覆盖

您的POM文件，忽略覆盖可以通过Eclipse设置应用于整个工作区。

将此文件保存在磁盘上的某个位置：

在 Eclipse / Preferences / Maven / Lifecycle Mappings 浏览到此文件，然后单击确定：

I have a fairly simple Maven project:

<project>
    <dependencies>
        ...
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.4</version>
                <executions>
                    <execution>
                        <id>copy-dependencies</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/dependencies</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

However, I get the following error in m2eclipse:

Description Resource    Path    Location    Type
maven-dependency-plugin (goals "copy-dependencies", "unpack") is not supported by m2e. pom.xml  /jasperreports-test line 60 Maven Project Build Lifecycle Mapping Problem

Why do I care if m2eclipse doesn't "support" this task? Maven does, and that's all I really care about. How can I get this error in my project to go away?

解决方案

It seems to be a known issue. You can instruct m2e to ignore this.

Option 1: pom.xml

Add the following inside your <build/> tag:

<pluginManagement>
<plugins>
    <!-- Ignore/Execute plugin execution -->
    <plugin>
        <groupId>org.eclipse.m2e</groupId>
        <artifactId>lifecycle-mapping</artifactId>
        <version>1.0.0</version>
        <configuration>
            <lifecycleMappingMetadata>
                <pluginExecutions>
                    <!-- copy-dependency plugin -->
                    <pluginExecution>
                        <pluginExecutionFilter>
                            <groupId>org.apache.maven.plugins</groupId>
                            <artifactId>maven-dependency-plugin</artifactId>
                            <versionRange>[1.0.0,)</versionRange>
                            <goals>
                                <goal>copy-dependencies</goal>
                            </goals>
                        </pluginExecutionFilter>
                        <action>
                            <ignore />
                        </action>
                    </pluginExecution>
                </pluginExecutions>
            </lifecycleMappingMetadata>
        </configuration>
    </plugin>
   </plugins></pluginManagement>

You will need to do Maven... -> Update Project Configuration on your project after this.

Option 2: Global Eclipse Override

To avoid changing your POM files, the ignore override can be applied to the whole workspace via Eclipse settings.

Save this file somewhere on the disk: https://gist.github.com/maksimov/8906462

In Eclipse/Preferences/Maven/Lifecycle Mappings browse to this file and click OK:

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