Maven, GWT and Eclipse project

Question

I'm trying to setup new web project using newest Maven, GWT and Eclipse. I'm trying to generate it with available archetype from GWT Maven Plugin with command:

mvn archetype:generate -DarchetypeGroupId=org.codehaus.mojo -DarchetypeArtifactId=gwt-maven-plugin -DarchetypeVersion=2.4.0 -DarchetypeRepository=repo1.maven.org

Running mvn gwt:run builds project, appication starts and everything seems to be ok. The problem appears when I'm trying to import this project as "Maven Project" into Eclipse Indigo. I'm getting mvn warning

Description Resource Path Location Type maven-war-plugin goals "inplace", "exploded", "manifest" are ignored by m2e pom.xml /contactmanager line 93 Maven Project Build Lifecycle Mapping Problem

and many Java errors like

Resource Path Location Type GreetingService cannot be resolved to a type GwtTestContactManager.java /contactmanager/src/test/java/com/jeffmaury/contactmanager/client

Missing asynchronous interface GreetingServiceAsync

It seems like something has changed and the newest gwt, m2eclipse, eclipse indigo and mvn can't work together properly.

Is there any way to fix this basic GWT project after importing into Eclipse? And to run this generated application from IDE?

Btw I've followed also many tutorials (e.g. http://riadiscuss.jeffmaury.com/2011/06/tutorial-maven-gwt-plugin-google.html) but without success. Almost all of them were deprecated...

Thanks.

See stackoverflow.com/questions/6352208/… for you issue with M2Eclipse, and stackoverflow.com/questions/9703599/… for an advice about how to create a GWT maven project (i.e. do not use that archetype); see also github.com/tbroyer/gwt-maven-archetypes for alternative archetypes. — Thomas Broyer

Sinisha Mihajlovski Sinisha Mihajlovski · Accepted Answer · 2012-05-31T15:27:51

Can you try adding something like this in your projects pom:

<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>org.apache.maven.plugins</groupId>
                                    <artifactId>maven-war-plugin</artifactId>
                                    <versionRange>[2.0,)</versionRange>
                                    <goals>
                                        <goal>inplace</goal>
                                        <goal>exploded</goal>
                                        <goal>manifest</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <ignore />
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

Maven, GWT and Eclipse project

2 Answers