Maven - 传递参数以在exec-maven-plugin中使用

Question

在我的pom中,我添加了exec-maven-plugin来调用一个生成文件的java类.此类需要将一些参数传递给main方法,其中一个是输入文件的位置(在项目外部).到目前为止,我一直在使用相对路径,这工作正常:

        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <executions>
                <execution>
                    <phase>test</phase>
                    <goals>
                        <goal>java</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <mainClass>com.laco.projectmaster.util.LanguageGenerator</mainClass>
                <arguments>
                    <argument>../PM-Config/dev/PMLanguage.xls</argument>
                    <argument>PM4.0</argument>
                    <argument>${project.build.outputDirectory}/com/laco/projectmaster/props/resources</argument>
                    <argument>ProjectMaster</argument>
                    <argument>Created during maven build (POM Version: ${pom.version})</argument>
                </arguments>
            </configuration>
        </plugin>

现在我开始使用hudson来安装/打包和部署战争,我不能再使用这个相对路径了.简单我想,我只是在调用maven时传递输入文件的位置:

mvn clean package -Dlangdir = C:/ somedir

然后改变pom像:

<argument>${langdir}/PMLanguage.xls</argument>

但是,此参数在此处仅被忽略.主类作为参数接收的路径变为null/PMLanguage.xls.参数本身在maven中可用,我使用antrun插件中的echo测试成功.正确的道路得到了回应.

你传递给maven的参数是否默认无论你在pom中引用它们在哪里都没有？

感谢任何帮助,
Stijn

Answer 1

我无法重现这个问题.我使用了以下测试类:

package com.stackoverflow.q3421918;

public class Hello
{
    public static void main( String[] args )
    {
        System.out.println( args[0] + " " + args[1] );
    }
}

以下是pom.xml:

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.stackoverflow.q3421918</groupId>
  <artifactId>Q3421918</artifactId>
  <version>1.0-SNAPSHOT</version>

  <!-- this was a test for a workaround -->
  <properties>
    <myprop>${langdir}</myprop>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.2</version>
        <executions>
          <execution>
            <phase>test</phase>
            <goals>
              <goal>java</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <mainClass>com.stackoverflow.q3421918.Hello</mainClass>
          <arguments>
            <argument>${myprop}</argument>
            <argument>${langdir}</argument>
          </arguments>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

这是我得到的输出:

$ mvn clean package -Dlangdir=C:/somedir 
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Q3421918
[INFO]    task-segment: [clean, package]
[INFO] ------------------------------------------------------------------------
...
[INFO] Preparing exec:java
[WARNING] Removing: java from forked lifecycle, to prevent recursive invocation.
[INFO] No goals needed for project - skipping
[INFO] [exec:java {execution: default}]
Hello c:/somedir c:/somedir
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
...

用Maven 2.2.1测试.