在反应堆项目中的单个maven构建中运行java应用程序和Web应用程序

问题描述

我有一个具有以下结构的反应堆项目

I have a reactor project with the following structure

server
- pom.xml (parent)
-- appserver (has a server socket)
-- webserver (connects to the socket in appserver and gets data)

应用服务器 pom.xml 有一个 maven-exec-plugin ，运行主方法在我的java类 AppServer 中。

The appserver pom.xml has a maven-exec-plugin that runs the main method in my java class AppServer.

当我在最顶层（服务器）项目中执行目标验证时，我的构建将停留在appserver - exec目标中，从不继续构建/运行我的Web服务器。

When I run goal verify in my topmost (server) project my build gets stuck at appserver - exec goal and never proceeds to building / running my webserver.

理想情况下，我想首先运行我的应用服务器，然后在单个安装中验证我的网络服务器，或验证我的最顶级项目运行。

Ideally I would like to run my appserver first and then my webserver in a single install or verify run on my top most project.

这是我的appserver pom中的exec maven插件配置。

Here is the exec maven plugin configuration in my appserver pom.

<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
  <execution>
    <goals>
      <goal>java</goal>
    </goals>
  </execution>
</executions>
<configuration>
  <mainClass>somepackage.AppServer</mainClass>
</configuration>

我知道许多其他类似性质的问题已经被问过，大多数答案围绕着shell脚本与antrun插件，几乎所有的至少3/4岁，我希望有一个更多的平台独立方式可用的新解决方案现在可用。

I am aware that many other questions of similar nature have been asked before and most answers revolve around use of shell scripts with antrun plugin and almost all of them atleast 3 / 4 years old and I hope there is new solution in a more platform independent manner available now.

推荐答案

不幸的是，与使用 maven-antrun-plugin 的用例相比，没有更好的解决方案。 目标，或者在带有目标，但在这两种情况下，它将被阻止;这意味着插件将等待执行完成。 和在Linux环境中运行良好。但是，由于您需要支持多种环境，因此您无法使用。

There are unfortunately no better solutions than using the maven-antrun-plugin for your use-case. maven-exec-plugin can be used to launch an external process, either in the same VM with the java goal or in a forked VM with the exec goal, but in both cases, it will be blocking; meaning that the plugin will wait for the execution to finish. The possible work-around of starting a Shell script as mentioned here and here works well in Linux environment. It won't work in your case however because you need to support multiple environments.

使用，您可以使用任务，并将 spawn 属性设置为真。这将导致Ant在后台运行任务。示例配置将是：

With the maven-antrun-plugin, you can use the Exec task and set the spawn attribute to true. This will cause Ant to run the task in the background. A sample configuration would be:

<plugin>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>1.8</version>
  <executions>
    <execution>
      <phase> <!-- a lifecycle phase --> </phase>
      <configuration>
        <target>
          <property name="runtime_classpath" refid="maven.runtime.classpath" />
          <exec executable="java" spawn="true">
            <arg value="-classpath"/>
            <arg value="${runtime_classpath}"/>
            <arg value="somepackage.AppServer"/>
          </exec>
        </target>
      </configuration>
      <goals>
        <goal>run</goal>
      </goals>
    </execution>
  </executions>
</plugin>

请注意，这使用来引用包含所有内容的Maven类路径运行时依赖关系（有关详细信息，请参阅）。

这篇关于在反应堆项目中的单个maven构建中运行java应用程序和Web应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！