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    copied!<p><strong>EDIT:</strong> I've updated my answer with additional steps provided by the OP. Credits to the OP for the details.</p> <p>I just broke my Eclipse setup trying to install the latest version of the Google Plugin for Eclipse (for GWT 2.0) so I can't confirm everything but, let's assume the following prerequisites are fulfilled:</p> <ul> <li>Eclipse 3.5</li> <li>Google Plugin for Eclipse (installed from <a href="http://dl.google.com/eclipse/plugin/3.5" rel="noreferrer">http://dl.google.com/eclipse/plugin/3.5</a>, see <a href="http://code.google.com/intl/en/eclipse/docs/getting_started.html" rel="noreferrer">instructions</a>)</li> <li>m2eclipse Plugin for Eclipse (installed from <a href="http://m2eclipse.sonatype.org/update" rel="noreferrer">http://m2eclipse.sonatype.org/update</a>)</li> </ul> <p>Did you try to:</p> <ol> <li><p>Create a new project from Eclipse (<em>New > Other...</em> then select <em>Maven Project</em> and choose the <em>gwt-maven-plugin</em> archetype).</p></li> <li><p>Edit the generated <code>pom.xml</code>, update the <code>gwt.version</code> property to <code>2.0.0</code> (which has been released in the central repo), <strike>add the <a href="http://mojo.codehaus.org/using-sandbox-plugins.html" rel="noreferrer">Codehaus Snapshot</a> repository</strike> and set the <code>gwt-maven-plugin</code> version to <strike><code>1.2-SNAPSHOT</code> (the version 1.2 isn't released in central, this should happen soon)</strike> <code>1.2</code> (which has been released in central too).</p></li> <li><p>Add a <code>&lt;runTarget&gt;</code> to the gwt-maven-plugin configuration as documented in <a href="http://mojo.codehaus.org/gwt-maven-plugin-1.1/eclipse/google_plugin.html" rel="noreferrer">Using the Google Eclipse Plugin</a>.</p></li> <li><p>Configure the maven-war-plugin as documented in the page mentioned in the previous step. </p></li> <li><p><strike>Manually enable GWT on the project from project preference by setting the <em>Use Google Web Toolkit</em> checkbox</strike> This step is unnecessary since you'll be building/running with a Maven run configuration, not the GWT Plugin for Eclipse.</p></li> </ol> <p>This is how my <code>pom.xml</code> actually looks like:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;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"&gt; &lt;!-- GWT-Maven archetype generated POM --&gt; &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; &lt;groupId&gt;com.mycompany.demo&lt;/groupId&gt; &lt;artifactId&gt;my-gwtapp&lt;/artifactId&gt; &lt;packaging&gt;war&lt;/packaging&gt; &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt; &lt;name&gt;gwt-maven-archetype-project&lt;/name&gt; &lt;properties&gt; &lt;!-- convenience to define GWT version in one place --&gt; &lt;gwt.version&gt;2.0.0&lt;/gwt.version&gt; &lt;!-- tell the compiler we can use 1.5 --&gt; &lt;maven.compiler.source&gt;1.5&lt;/maven.compiler.source&gt; &lt;maven.compiler.target&gt;1.5&lt;/maven.compiler.target&gt; &lt;/properties&gt; &lt;dependencies&gt; &lt;!-- GWT dependencies (from central repo) --&gt; &lt;dependency&gt; &lt;groupId&gt;com.google.gwt&lt;/groupId&gt; &lt;artifactId&gt;gwt-servlet&lt;/artifactId&gt; &lt;version&gt;${gwt.version}&lt;/version&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;com.google.gwt&lt;/groupId&gt; &lt;artifactId&gt;gwt-user&lt;/artifactId&gt; &lt;version&gt;${gwt.version}&lt;/version&gt; &lt;scope&gt;provided&lt;/scope&gt; &lt;/dependency&gt; &lt;!-- test --&gt; &lt;dependency&gt; &lt;groupId&gt;junit&lt;/groupId&gt; &lt;artifactId&gt;junit&lt;/artifactId&gt; &lt;version&gt;4.4&lt;/version&gt; &lt;scope&gt;test&lt;/scope&gt; &lt;/dependency&gt; &lt;/dependencies&gt; &lt;build&gt; &lt;outputDirectory&gt;war/WEB-INF/classes&lt;/outputDirectory&gt; &lt;plugins&gt; &lt;plugin&gt; &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; &lt;artifactId&gt;gwt-maven-plugin&lt;/artifactId&gt; &lt;version&gt;1.2&lt;/version&gt; &lt;executions&gt; &lt;execution&gt; &lt;goals&gt; &lt;goal&gt;compile&lt;/goal&gt; &lt;goal&gt;generateAsync&lt;/goal&gt; &lt;goal&gt;test&lt;/goal&gt; &lt;/goals&gt; &lt;/execution&gt; &lt;/executions&gt; &lt;configuration&gt; &lt;runTarget&gt;com.mycompany.demo.gwt.Application/Application.html&lt;/runTarget&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;!-- If you want to use the target/web.xml file mergewebxml produces, tell the war plugin to use it. Also, exclude what you want from the final artifact here. &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt; &lt;configuration&gt; &lt;webXml&gt;target/web.xml&lt;/webXml&gt; &lt;warSourceExcludes&gt;.gwt-tmp/**&lt;/warSourceExcludes&gt; &lt;/configuration&gt; &lt;/plugin&gt; --&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt; &lt;version&gt;2.0.2&lt;/version&gt; &lt;configuration&gt; &lt;warSourceDirectory&gt;war&lt;/warSourceDirectory&gt; &lt;webXml&gt;src/main/webapp/WEB-INF/web.xml&lt;/webXml&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;/plugins&gt; &lt;/build&gt; &lt;/project&gt; </code></pre> <p>Run the <code>gwt:eclipse</code> goal (using m2eclipse Maven2 > build...) to setup your environment and create the launch configuration for your GWT modules.</p> <p>Run <code>gwt:compile gwt:run</code> to compile and run a GWT module in the GWT Hosted mode.</p>
 

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