Maven：如果属性标签中的pom.xml中的sentense [英] Maven: If sentense in pom.xml in the property tag

问题描述

如果设置了环境变量，我想设置属性。我在google上搜索了很多内容，我发现的内容与下面的代码类似，但我一直收到错误：

I'd like to set a property if an environment variable is set. I googled a lot on it and all I found is something similar to the code below, but I keep getting the error:

[致命]不可解析的POM Y：\ Maven \ parent-pom \ pom.xml：TEXT必须紧跟END_TAG，而不是START_TAG（位置：START_TAG
s een ... roperties \\\\ n
classpathref =maven.plugin.classpath/> ... @ 29:55）@第29行，第25列

[FATAL] Non-parseable POM Y:\Maven\parent-pom\pom.xml: TEXT must be immediately followed by END_TAG and not START_TAG (position: START_TAG s een ...roperties"\r\n
classpathref="maven.plugin.classpath" />... @29:55) @ line 29, column 55

这是我正在尝试的代码，它在pom.xml中，我运行命令 -

That's the code I'm trying, its inside a pom.xml and I ran the command -

mvn --errors deploy

当然，我很乐意得到任何其他解决方案，如果你有关于如何根据环境变量内容在pom.xml中设置属性的其他建议。

Of course, I'll be happy to get any other solution, if you have other suggestion on how to set a property in pom.xml depending on an environment variable content.

谢谢，
Eli

Thanks, Eli

    <distributionManagement>
       .....
    </distributionManagement>

    <properties>
          <tasks>
        <taskdef resource="net/sf/antcontrib/antcontrib.properties"
          classpathref="maven.plugin.classpath" />

        <if>
           <condition>
             <equals arg1="${env.WAS60_HOME}" arg2=""\>
           </condition>
           <then>
             <was60.home>${env.WAS60_HOME}</was60.home>
             <javac>${was60.home}/java/bin/javac</javac>
           </then>
        </if>

         <if>
           <condition>
             <equals arg1="${env.WAS85_HOME}" arg2=""\>
           </condition>
           <then>
             <was85.home>${env.WAS85_HOME}</was60.home>
             <javac>${was85.home}/java/bin/javac</javac>
           </then>
        </if>
      </tasks>
</properties>
    <profiles>
       <profile>
    <id>was.base.v60</id>
            <dependencies>
               <dependency>
                 ....
                  <systemPath>${was60.home}/java/jre/lib/xml.jar</systemPath>
               </dependency>
               .....
            </dependencies>
        </profile>
        <profile>
    <id>was.base.v85</id>
            <dependencies>
               <dependency>
                 ....
                  <systemPath>${was85.home}/java/jre/lib/xml.jar</systemPath>
               </dependency>
               .....
            </dependencies>
        </profile>
    </profiles>

推荐答案

显然没有办法做正确的IF- Maven中的那句话。我发现至少没有。

Apparently there is no way to do a proper IF-THEN-ELSE sentence in Maven. At least none that I found.

我发现最接近的是使用激活标签。如果满足条件，它将激活配置文件。

The closest thing I found was using the "activation" tag. which will activate the profile if the condition in it is met.

Maven 2.0.X中的多个条件存在一些错误，不确定它现在的状态是什么 -

There is some bug on multiple conditions in Maven 2.0.X, not sure what's the status of it now -

http：//jira.codehaus .org / browse / MNG-4565

所以，这里的问题回答了代码示例 -

So, a code example is answered on the question here -

Maven 2：运行maven-replacer-带有条件替换值的插件？

但是如果你想做一些像<<如果......那么......其他>>你要打你的头撞墙。还有其他方法，当然我认为它是有目的的，所以你必须遵循Maven方式。

But if you want to do something like << IF ... Then ... Else >> You're going to hit you head on a wall doing it. There are other ways, of course and I assume it is done in purpose, so you'll have to follow Maven way.

感谢所有试图帮助$ b的人$ b Elyahu

Thanks to all that tried to help Elyahu

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