The maven project generated by gwt-maven-plugin can't be imported into eclipse via import existing maven project

I firstly generated a gwt maven project by executing --

mvn archetype:generate -DarchetypeGroupId=org.codehaus.mojo -DarchetypeArtifactId=gwt-maven-plugin -DarchetypeVersion=2.7.0

After that, the pom.xml is as follows:

        <?xml version="1.0" encoding="UTF-8"?>
    <project
      xmlns="http://maven.apache.org/POM/4.0.0"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

      <modelVersion>4.0.0</modelVersion>
      <groupId>com.boye.games</groupId>
      <artifactId>games-gwt</artifactId>
      <packaging>war</packaging>
      <version>1.0-SNAPSHOT</version>
      <name>GWT Maven Archetype</name>

      <properties>
        <!-- Convenience property to set the GWT version -->
        <gwtVersion>2.7.0</gwtVersion>

        <!-- GWT needs at least java 1.6 -->
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      </properties>

      <dependencyManagement>
        <dependencies>
          <dependency>
            <groupId>com.google.gwt</groupId>
            <artifactId>gwt</artifactId>
            <version>${gwtVersion}</version>
            <type>pom</type>
            <scope>import</scope>
          </dependency>
        </dependencies>
      </dependencyManagement>

      <dependencies>
        <dependency>
          <groupId>com.google.gwt</groupId>
          <artifactId>gwt-servlet</artifactId>
          <scope>runtime</scope>
        </dependency>
        <dependency>
          <groupId>com.google.gwt</groupId>
          <artifactId>gwt-user</artifactId>
          <scope>provided</scope>
        </dependency>
        <dependency>
          <groupId>com.google.gwt</groupId>
          <artifactId>gwt-dev</artifactId>
          <scope>provided</scope>
        </dependency>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
      </dependencies>

      <build>
        <!-- Output classes directly into the webapp, so that IDEs and "mvn process-classes" update them in DevMode -->
        <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>

        <plugins>

          <!-- GWT Maven Plugin -->
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>gwt-maven-plugin</artifactId>
            <version>2.7.0</version>
            <executions>
              <execution>
                <goals>
                  <goal>compile</goal>
                  <goal>test</goal>
                  <goal>generateAsync</goal>
                </goals>
              </execution>
            </executions>
            <!-- Plugin configuration. There are many available options, see 
              gwt-maven-plugin documentation at codehaus.org -->
            <configuration>
              <runTarget>LineThree.html</runTarget>
              <modules>
                <module>com.boye.games.linethree.LineThree</module>
              </modules>
            </configuration>
          </plugin>
        </plugins>
      </build>

    </project>

Then I imported this project into eclipse via built-in eclipse function -- import existing Maven project.

However, the process failed due to several reasons:

1. GreetingServiceAsync cannot be resolved to a type
2. Execution default of goal org.codehaus.mojo:gwt-maven-plugin:2.7.0:generateAsync failed:

Plugin org.codehaus.mojo:gwt-maven-plugin:2.7.0 or one of its dependencies could not be resolved: Failed to collect dependencies for org.codehaus.mojo:gwt-maven-plugin:jar:2.7.0 () (org.codehaus.mojo:gwt-maven-plugin:2.7.0:generateAsync:default:generate-sources)

3. google plugin can't identify this project as gwt web application automatically.

My environment as follows:

1. java version 1.7.0_03
2. eclipse version Kepler Service Release 2
3. gwt version 2.7.0

Please advice, thanks a lot!

I did another attempt to try in a win32 computer, the problem re-appeared even if I set up the environment as aforementioned working in my win64 computer.

So I really got confused, like Klarki said, I have to do some tweaks to get it work. I generated GreetingServiceAsync via mvn gwt:generateAsync then manually copy GreetingServiceAsync to source folder, then I remove <goal>generateAsync</goal> in pom.xml, then import project via eclipse's existing maven project. It works again!

Sadly see it not working intelligently.