使用不同的分类器构建工件

Question

<dependency>
    <groupId>com.example</groupId>
    <artifactId>example</artifactId>
    <version>1.0</version>
    <classifier>jdk6</classifier>
</dependency>

我也想让他们在一次通过中建立起来。所以档案可能不是一个好办法。我尝试使用多个插件执行。

首先，我创建两个单独的构建目录：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-antrun-plugin</artifactId>
    <executions>
        <execution>
            <id>createClassesDir</id>
            <phase>process-resources</phase>
            <configuration>
                <tasks>
                    <mkdir dir="${project.build.outputDirectory}/jdk6" />
                    <mkdir dir="${project.build.outputDirectory}/jdk7" />
                </tasks>
            </configuration>
            <goals>
                <goal>run</goal>
            </goals>
        </execution>
    </executions>
</plugin>

然后我尝试将maven-compiler-plugin配置为build两次，在两个目录中：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>2.3.2</version>
    <executions>
        <execution>
            <id>jdk6</id>
            <phase>compile</phase>
            <goals>
                <goal>compile</goal>
            </goals>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
                <fork>true</fork>
                <compilerArguments>
                    <d>${project.build.outputDirectory}/jdk6</d>
                </compilerArguments>
            </configuration>
        </execution>
        <execution>
            <id>jdk7</id>
            <phase>compile</phase>
            <goals>
                <goal>compile</goal>
            </goals>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
                <fork>true</fork>
                <compilerArguments>
                    <d>${project.build.outputDirectory}/jdk7</d>
                </compilerArguments>
            </configuration>
        </execution>
    </executions>
</plugin>

[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ example ---
[INFO] Compiling 1 source file to [...]/example/target/classes
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (jdk6) @ example ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (jdk7) @ example ---
[INFO] Nothing to compile - all classes are up to date

Answer 1

老实说，您不应该从同一个maven项目创建两个maven JAR。可以读到这里，背后是有原因的。

同一篇文章还解释了两种方法，如果您愿意，您仍然可以这样做

    Using profiles
    By doing two executions of maven jar plugin

你也可以在SO上提这个问题。

  pom-jdk6.xml
  pom-jdk7.xml