maven-2 - 属性-maven-插件 : Error loading properties-file

Question

我想将 pom.xml 中的所有属性提取到属性文件中。这些是常见的属性，如依赖版本、插件版本和目录。我正在使用properties-maven-plugin，但它没有按照我想要的方式工作。

我的 pom.xml 的重要部分:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>properties-maven-plugin</artifactId>
  <version>1.0-alpha-1</version>
  <executions>
    <execution>
      <phase>initialize</phase>
      <goals>
        <goal>read-project-properties</goal>
      </goals>
      <configuration>
       <files>
          <file>${basedir}/pom.properties</file>
        </files>
      </configuration>
    </execution>
  </executions>
</plugin>

现在，当我运行“mvnproperties:read-project-properties”时，出现以下错误:

[INFO] One or more required plugin parameters are invalid/missing for 'properties:read-project-properties'

[0] Inside the definition for plugin 'properties-maven-plugin' specify the following:

<configuration>
  ...
  <files>VALUE</files>
</configuration>.

pom.properties 文件与 pom.xml 位于同一目录中。我该怎么做才能让properties-maven-plugin读取我的properties-file？

编辑

我在 http://jira.codehaus.org/browse/MOJO-1523 提交了一个问题。它已被关闭为“不是错误”，原因是:

It's by design. The project definition has to be self-contained, otherwise it is no longer complete if it is refered from elsewhere as part of the transitive deps.

Answer 1

您的configuration元素定义在 execution 内因此适用于此execution仅有的。

所以要么调用 mvn initialize (或 initialize 之后的阶段)使用 configuration您当前的execution捆绑。

或者使用全局 configuration :

  <plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>properties-maven-plugin</artifactId>
    <version>1.0-alpha-2</version>
    <configuration>
     <files>
        <file>etc/config/dev.properties</file>
      </files>
    </configuration>
    ...
  </plugin>

然后调用

mvn properties:read-project-properties

但这在这个插件的特定情况下没有多大意义(您希望属性在构建期间可用)，因此这给您留下了第一个解决方案。

<小时/>

更新:我自己做了一个测试，确实使用了以下 POM:

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.stackoverflow</groupId>
  <artifactId>Q2664362</artifactId>
  <version>1.0-SNAPSHOT</version>
  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>properties-maven-plugin</artifactId>
        <version>1.0-alpha-2</version>
        <executions>
          <execution>
            <phase>initialize</phase>
            <goals>
              <goal>read-project-properties</goal>
            </goals>
            <configuration>
              <files>
                <file>etc/config/dev.properties</file>
              </files>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

正在运行mvn test不起作用:maven 将尝试下载 junit:jar:${junit.version} (即它不使用属性的值)，这显然会失败。

$ mvn test[INFO] Scanning for projects...[INFO] ------------------------------------------------------------------------[INFO] Building SO - Q2664362 - maven-properties-plugin demo[INFO]    task-segment: [test][INFO] ------------------------------------------------------------------------[INFO] [properties:read-project-properties {execution: default}][INFO] [resources:resources {execution: default-resources}][INFO] Using 'UTF-8' encoding to copy filtered resources.[INFO] skip non existing resourceDirectory /home/pascal/Projects/stackoverflow/Q2664362/src/main/resourcesDownloading: http://repo1.maven.org/maven2/junit/junit/${junit.version}/junit-${junit.version}.pom[INFO] Unable to find resource 'junit:junit:pom:${junit.version}' in repository central (http://repo1.maven.org/maven2)[INFO] [compiler:compile {execution: default-compile}][INFO] Nothing to compile - all classes are up to date[INFO] [resources:testResources {execution: default-testResources}][INFO] Using 'UTF-8' encoding to copy filtered resources.[INFO] skip non existing resourceDirectory /home/pascal/Projects/stackoverflow/Q2664362/src/test/resourcesDownloading: http://repo1.maven.org/maven2/junit/junit/${junit.version}/junit-${junit.version}.jar[INFO] Unable to find resource 'junit:junit:jar:${junit.version}' in repository central (http://repo1.maven.org/maven2)[INFO] ------------------------------------------------------------------------[ERROR] BUILD ERROR[INFO] ------------------------------------------------------------------------[INFO] Failed to resolve artifact....

奇怪的是，依赖项的下载发生在 properties:read-project-properties 之后。我不确定，但这听起来像是一个错误，您应该打开 an issue .