[英]Maven: Only execute plugin when a command line flag is present
I want Maven to only run a certain plugin when there is a flag on the command line when I call the mvn
command. 我希望Maven仅在调用mvn
命令时在命令行上有标志时才运行某个插件。
for example: 例如:
Let's say I have a plugin called maven-foo-plugin
. 假设我有一个名为maven-foo-plugin
。 I only want maven to run this plugin when the flag --foo
is present when I call the maven command. 我只希望当调用maven命令时出现--foo
标志时,maven才能运行此插件。
So, instead of saying... 所以,不用说...
mvn install
...I would say... ...我会说...
mvn install --foo
The first one should NOT use/call the plugin maven-foo-plugin
, but the second one should. 第一个不应该使用/调用插件maven-foo-plugin
,但是第二个应该。 By default, I don't want this plugin to run, but if and only if, the --foo
is present. 默认情况下,我不希望此插件运行,但是当且仅当--foo
存在。 Is there another parameter that I add to this maven-foo-plugin
to make it do this? 我是否要在此maven-foo-plugin
添加另一个参数以使其执行此操作?
The plugin I'm using is the maven-antrun-plugin
that has the task that unzips a file. 我使用的插件是maven-antrun-plugin
,其任务是将文件解压缩。 Of course, sometimes this file is present and sometimes not. 当然,有时此文件存在,有时不存在。 Sometimes, it's not present and I don't need it. 有时,它不存在,我不需要它。 So, I need a way (Preferably through command line unless someone has a better idea) to turn on/off this plugin. 因此,我需要一种方法(最好是通过命令行,除非有人有更好的主意)打开/关闭此插件。
The correct way to trigger conditional action in maven is to use profile. 在Maven中触发条件操作的正确方法是使用配置文件。 You can so configure a specific profile including the plugin activation, you will then trigger the execution using 您可以配置一个特定的配置文件,包括激活插件,然后使用
mvn targetPhase -P myprofile
(you can also specify a specific property value to activate the profile) (您也可以指定特定的属性值来激活配置文件)
see Maven: Using a Plugin Based On Profile 请参阅Maven:使用基于配置文件的插件
As @Gab has mentioned, using Maven profiles is the way to go. 正如@Gab提到的,使用Maven配置文件是正确的方法。 Create a profile and configure your plugin in the profile. 创建一个配置文件并在该配置文件中配置您的插件。 Then in the profile's activation
section, reference the environment variable, with or without a value: 然后,在配置文件的activation
部分中,引用环境变量(带或不带值):
<profiles>
<profile>
<activation>
<property>
<name>debug</name>
</property>
</activation>
...
</profile>
</profiles>
The above example would activate the profile if you define the debug
variable when calling Maven: 如果在调用Maven时定义了debug
变量,则上面的示例将激活配置文件:
mvn install -Ddebug
Please note that you have to prefix environment variables with -D
in order to pass them to the JVM running Maven. 请注意,必须将环境变量添加-D
前缀,才能将其传递给运行Maven的JVM。
More details can be found here: http://maven.apache.org/guides/introduction/introduction-to-profiles.html 可以在这里找到更多详细信息: http : //maven.apache.org/guides/introduction/introduction-to-profiles.html
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