在maven中更改资源的目标文件夹

Question

我从 doc 中复制粘贴了以下片段到我的 pom.xml

  <plugin>
    <!-- <groupId>org.apache.maven.plugins</groupId>-->
    <artifactId>maven-resources-plugin</artifactId>
    <version>3.2.0</version>
    <executions>
      <execution>
        <id>copy-resources</id>
        <phase>validate</phase>
        <goals>
          <goal>copy-resources</goal>
        </goals>
        <configuration>
          <outputDirectory>${basedir}/resources</outputDirectory>
          <resources>                                        
            <resource>
              <directory>${basedir}/template</directory>
              <filtering>true</filtering>
            </resource>             
          </resources>   
        </configuration>            
      </execution>
    </executions>
  </plugin>

但是当我尝试触发部署时收到以下消息：

$ mvn resources:copy-resources 
[INFO] Scanning for projects...
[INFO] 
[INFO] ------------------------< org.test:myproject >------------------------
[INFO] Building myproject-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:3.2.0:copy-resources (default-cli) @ myproject ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.440 s
[INFO] Finished at: 2021-12-26T12:30:59+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:copy-resources (default-cli) on project myproject: The parameters 'resources', 'outputDirectory' for goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:copy-resources are missing or invalid -> [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/PluginParameterException

这是我的目录结构：

./resources
./template
./template/test.txt
./pom.xml

如何更改资源的目标文件夹？为什么maven没有解析插件中的配置指令？

Answer 1

执行特定 Maven 目标的完整命令语法是：

mvn <plugin>:<goal>@<executionId>

不指定executionId时，默认等于default-cli。

现在你执行 mvn resources:copy-resources 相当于 mvn resources:copy-resources@default-cli 但你的 pom.xml 没有为这个目标定义这个执行 ID。所以它抱怨一些参数丢失并且没有配置好。

当你定义执行 id 为 copy-resources 时，这意味着你应该执行 :

mvn resources:copy-resources@copy-resources

或者当您将此目标绑定到 validate 阶段时，这意味着您也可以通过以下方式简单地执行它：

mvn validate

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