properties-maven-plugin系统属性

Question

System.getProperty（＆＃34; hello.world.two＆＃34;）返回null。尝试编译/初始化/包阶段。

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>properties-maven-plugin</artifactId>
    <version>1.0-alpha-2</version>
    <executions>
        <execution>
            <!-- any phase before your app deploys -->
            <phase>prepare-package</phase>
            <goals>
                <goal>set-system-properties</goal>
            </goals>
            <configuration>
                <properties>
                    <property>
                        <name>hello.world.two</name>
                        <value>Hello World!</value>
                    </property>
                </properties>
            </configuration>
        </execution>
    </executions>
</plugin>