Java 如何在 Maven 中显示消息
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How can I display a message in Maven
提问by David
How can I display a message in Maven?
如何在 Maven 中显示消息？
In ant, we do have "echo" to display a message, but in maven, how can I do that?
在 ant 中，我们确实有“echo”来显示消息，但是在 maven 中，我该怎么做？
回答by matt b
You can use the antrun plugin:
您可以使用 antrun 插件：
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<phase>generate-resources</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<echo>Hello world!</echo>
</tasks>
</configuration>
</execution>
</executions>
</plugin>
One issue though is that you have to choose what phase of the build lifecycleto bind this to (my example has the plugin bound to generate-resources). Unlike Ant, you aren't controlling the lifecycle yourself, but rather just binding plugins to certain points in a pre-defined lifecycle. Depending on what you are actually trying to do, this may or may not make sense for your use case.
但是，一个问题是您必须选择构建生命周期的哪个阶段将其绑定到（我的示例将插件绑定到generate-resources）。与 Ant 不同，您不是自己控制生命周期，而只是将插件绑定到预定义生命周期中的某些点。根据您实际尝试执行的操作，这可能对您的用例有意义，也可能没有意义。
回答by Venkatesh Dayawar
<plugin>
<artifactId>maven-antrun-plugin</artifactId>
<executions>
<execution>
<phase>generate-resources</phase>
<goals>
<goal>run</goal>
</goals>
<configuration>
<tasks>
<echo>[your message]:${Urkey}</echo>
</tasks>
</configuration>
</execution>
</executions>
</plugin>
回答by UnclickableCharacter
You can use Groovy Maven Pluginfor this.
您可以为此使用Groovy Maven 插件。
<plugin>
<groupId>org.codehaus.gmaven</groupId>
<artifactId>groovy-maven-plugin</artifactId>
<version>2.0</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>execute</goal>
</goals>
<configuration>
<source>
log.info('Test message: {}', 'Hello, World!')
</source>
</configuration>
</execution>
</executions>
</plugin>
The configuration above will produce the following output:
上面的配置将产生以下输出：
[INFO] Test message: Hello, World!
回答by Ben Hutchison
You can use Bj?rn Ekryd's Echo Maven Plugin, which is published in Maven Central:
您可以使用Bj?rn Ekryd的Echo Maven 插件，该插件在Maven Central 中发布：
<plugin>
<groupId>com.github.ekryd.echo-maven-plugin</groupId>
<artifactId>echo-maven-plugin</artifactId>
<version>1.2.0</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>echo</goal>
</goals>
<configuration>
<message>war has changed</message>
</configuration>
</execution>
</executions>
</plugin>
[INFO] --- maven-war-plugin:2.4:war (default-war) @ mymodule ---
[INFO] Packaging webapp
[INFO] Processing war project
[INFO]
[INFO] --- echo-maven-plugin:1.2.0:echo (default) @ mymodule ---
[INFO] war has changed
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
Also, this plugin has 95% code coverage, which is pretty cool.
此外，这个插件有95% 的代码覆盖率，这很酷。
