JDK tools.jar作为maven依赖

问题描述

我想将JDK tools.jar作为编译依赖项。我找到了一些示例，表明要使用 systemPath 属性，如下所示：

I would like to put JDK tools.jar as compile dependency. I found some examples that indicate to use the systemPath property like the following:

<dependency>
  <groupId>com.sun</groupId>
  <artifactId>tools</artifactId>
  <scope>system</scope>
  <systemPath>${java.home}/../lib/tools.jar</systemPath>
</dependency>

问题是Mac OS X的路径不正确（但是对于Windows和Linux的）。对于它，正确的路径是 $ {java.home} /../ Classes / classes.jar 。

The problem is that the path is not correct for Mac Os X (however it is correct for Windows and Linux). For it, the correct path is ${java.home}/../Classes/classes.jar.

我正在寻找一个为了定义maven属性，如果系统被检测为Mac Os X，则将值设置为 $ {java.home} /../ Classes / classes.jar ，否则设置为到$ {java.home} /../ lib / tools.jar （就像可以用ANT一样）。有人有想法吗？

I am looking for a way in order to define a maven property such that if system is detected as Mac Os X, value is set to ${java.home}/../Classes/classes.jar, otherwise it is set to ${java.home}/../lib/tools.jar (like it is possible to do with ANT). Does someone has an idea ?

推荐答案

感谢您介绍我的maven个人资料。

Thank you for introducing me maven profiles.

我使用了上面提到的配置文件，并根据所需文件的存在激活配置文件：

I have used profile as mentioned above and by activating a profile based on the presence of the desired file :

<profiles>
    <profile>
        <id>default-profile</id>
        <activation>
            <activeByDefault>true</activeByDefault>
            <file>
                <exists>${java.home}/../lib/tools.jar</exists>
            </file>
        </activation>
        <properties>
            <toolsjar>${java.home}/../lib/tools.jar</toolsjar>
        </properties>
    </profile>
    <profile>
        <id>mac-profile</id>
        <activation>
            <activeByDefault>false</activeByDefault>
            <file>
                <exists>${java.home}/../Classes/classes.jar</exists>
            </file>
        </activation>
        <properties>
            <toolsjar>${java.home}/../Classes/classes.jar</toolsjar>
        </properties>
    </profile>
</profiles>

我发布此答案以突出显示上一篇文章中的错误：属性部分只能用于激活部分，以便根据指定属性的存在激活配置文件。为了定义属性，必须像上面一样使用属性部分。

I posted this answer to highlight a mistake in the previous post : the property section can only be used in activation section in order to activate a profile based on the existence of the specified property. In order to define a property, the properties section must be used like above.

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