Intellij IDEA artifact 'XXXX:war exploded' has invalid extension

Question

Every time I make even the tiniest change to my POM Intellij removes the .war extension for my exploded artifact in the Project Structure output directory setting. This causes an error in Intellij's Run/Debug configuration:

Artifact 'XXXX:war exploded' has invalid extension.

In order to resolve the issue I must manually override the Project Structure output directory setting. Every time I make even the tiniest change to the POM I must go back to the Output directory setting and manually append ".war" to the end of the Output directory setting. This is getting very old and frustrating.

e.g. I must change this:

E:\workarea\enterp\application\target\application

to this:

E:\workarea\enterp\application\target\application.war

If I manually set the Maven WAR plugin outputDirectory configuration as follows, this does not help at all:

<plugin>
    <artifactId>maven-war-plugin</artifactId>
    <version>${maven.war.plugin.version}</version>
    <configuration>

        <!-- Output directory of artifact:war exploded keeps losing the .war extension -->
        <outputDirectory>${project.build.directory}.war</outputDirectory>

    </configuration>
</plugin>

How can I resolve this problem?

EDIT:

Here's the complete build config:

    <build>
    <!-- Maven will append the version to the finalName (which is the name
        given to the generated war, and hence the context root) -->
    <finalName>${project.artifactId}</finalName>

    <plugins>
        <!-- Compiler plugin enforces Java 1.6 compatibility and activates annotation
            processors -->
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${maven.compiler.plugin.version}</version>
            <configuration>
                <source>${maven.compiler.source}</source>
                <target>${maven.compiler.target}</target>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>${maven.war.plugin.version}</version>
            <configuration>
                <!-- Output directory of artifact:war exploded keeps losing the .war extension -->
                <outputDirectory>${project.build.directory}/${project.artifactId}.war</outputDirectory>

                <!-- Java EE 7 doesn't require web.xml, Maven needs to catch up! -->
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>
        <!-- The WildFly plugin deploys your war to a local WildFly container -->
        <!-- To use, run: mvn package wildfly:deploy -->
        <plugin>
            <groupId>org.wildfly.plugins</groupId>
            <artifactId>wildfly-maven-plugin</artifactId>
            <version>${version.wildfly.maven.plugin}</version>
        </plugin>
    </plugins>

</build>

SECOND EDIT:

I discovered that one solution is to append ".war" to ${project.artifactId} in the build configuration, e.g.:

<finalName>${project.artifactId}.war</finalName>

and remove outputDirectory from the plugin configuration. So the build config should look like this:

<build>
    <!--
        Maven will make finalName the name of the generated war.

        NOTE:   Output directory of artifact:war exploded keeps losing the .war extension
                http://youtrack.jetbrains.com/issue/IDEA-86484
                http://youtrack.jetbrains.com/issue/IDEA-95162

                The solution is to append ".war" to ${project.artifactId}, below:
    -->
    <finalName>${project.artifactId}.war</finalName>

    <plugins>
        <!-- Compiler plugin enforces Java 1.6 compatibility and activates annotation
            processors -->
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${maven.compiler.plugin.version}</version>
            <configuration>
                <source>${maven.compiler.source}</source>
                <target>${maven.compiler.target}</target>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-war-plugin</artifactId>
            <version>${maven.war.plugin.version}</version>
            <configuration>
                <!-- Java EE 7 doesn't require web.xml, Maven needs to catch up! -->
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>
        <!-- The WildFly plugin deploys your war to a local WildFly container -->
        <!-- To use, run: mvn package wildfly:deploy -->
        <plugin>
            <groupId>org.wildfly.plugins</groupId>
            <artifactId>wildfly-maven-plugin</artifactId>
            <version>${version.wildfly.maven.plugin}</version>
        </plugin>
    </plugins>

</build>

DISCLAIMER: If you use this workaround just be aware that when you deploy an unexploded WAR artifact the file name will be named XXXX.war.war. It works -- I deployed the artifact as a WAR file in Intellij -- but it's ugly.

INFO [org.jboss.as.server.deployment] (MSC service thread 1-7) JBAS015876: Starting deployment of "XXXX.war.war" (runtime-name: "XXXX.war.war)"

If someone can tell me how to configure the Intellij project to work with Maven to select one or the other finalName values depending on whether I'm deploying a WAR file vs. exploded artifact then this question will be sufficiently answered.

<!-- Exploded artifact --> 
<finalName>${project.artifactId}.war</finalName>

<!-- WAR file (unexploded) artifact --> 
<finalName>${project.artifactId}</finalName>

Answer 1

There's a way to fix this in IntelliJ, without changing your pom.xml file(s), by adding an artifact with a reference to the exploded war (or in my case, the exploded ear) and it won't get stomped every time IntelliJ re-imports the maven pom(s). Here's how:

1. Stop/undeploy your current artifact deployment

2. Edit your run config, and in the Deployment tab, remove the current exploded war/ear artifact

3. Open the project's Artifacts settings and add a new artifact

4. Use the plus button to add a new war or (in my case) ear exploded artifact

5. Give it a name, then edit the Output directory to add the appropriate extension (.war or .ear)

6. In the Output Layout section where you see <output root>, use the plus button to add an Artifact

7. Select the desired exploded artifact

8. Edit your run config again, and in the Deployment tab, add the new workaround exploded artifact

Thanks to Nikolay Chashnikov for describing this in his comment on the bug report