Running an Ant-builded project as web-application - eclipse

Question

I'm trying to run a "project.zip" I've downloaded from the official GWT site about RPC and Hibernate at http://www.gwtproject.org/articles/using_gwt_with_hibernate.html .
The guide suggests:
"you can use Ant to build the project, as well as start up hosted mode
to see the UI and our Hibernate instance setup in the embedded Jetty
server."
So I have imported it on Eclipse with New > Project menu-> Java Project from Existing Ant Buildfile wizard.
My final goal is to run it on Eclipse as web-application, but it gives me every types of errors and above all there's no run as-> web application but only as ->ant build ! And all the War directory is missing in Eclipse.
How can change this Ant build project.zip to a normal project GWT? I'm amazed how an official Google guide can give so many problems!
If you need it this is the build.xml :
<?xml version="1.0" encoding="utf-8" ?>
<project name="Guestbook" default="build" basedir=".">
<!-- Define gwt.home, gwt.dev.jar, appengine.sdk.home -->
<property file="build.properties"/>
<path id="project.class.path">
<pathelement location="war/WEB-INF/classes"/>
<pathelement location="${gwt.home}/gwt-user.jar"/>
<!-- Add any additional non-server libs (such as JUnit) -->
<fileset dir="war/WEB-INF/lib">
<include name="**/*.jar"/>
</fileset>
</path>
<target name="libs" description="Copy libs to WEB-INF/lib">
<mkdir dir="war/WEB-INF/lib" />
<copy todir="war/WEB-INF/lib" file="${gwt.home}/gwt-servlet.jar" />
<!-- Add any additional server libs that need to be copied -->
<copy todir="war/WEB-INF/lib" flatten="true">
<fileset dir="lib/">
<include name="**/*.jar"/>
</fileset>
</copy>
</target>
<target name="javac" depends="libs" description="Compile java source">
<mkdir dir="war/WEB-INF/classes"/>
<javac srcdir="src" includes="**" encoding="utf-8"
destdir="war/WEB-INF/classes"
source="1.5" target="1.5" nowarn="true"
debug="true" debuglevel="lines,vars,source">
<classpath refid="project.class.path"/>
</javac>
</target>
<!-- can add additional arguments like -logLevel INFO or -style PRETTY -->
<target name="gwtc" depends="javac" description="GWT compile to JavaScript">
<java failonerror="true" fork="true" classname="com.google.gwt.dev.Compiler">
<classpath>
<pathelement location="src"/>
<path refid="project.class.path"/>
<pathelement location="${gwt.home}/${gwt.dev.jar}"/>
</classpath>
<!-- add jvmarg -Xss16M or similar if you see a StackOverflowError -->
<jvmarg value="-Xmx256M"/>
<arg value="com.google.musicstore.MusicStore"/>
</java>
</target>
<target name="hosted" depends="javac" description="Run hosted mode">
<java failonerror="true" fork="true" classname="com.google.gwt.dev.HostedMode">
<classpath>
<pathelement location="src"/>
<path refid="project.class.path"/>
<pathelement location="${gwt.home}/${gwt.dev.jar}"/>
</classpath>
<jvmarg value="-Xmx256M"/>
<arg value="-startupUrl"/>
<arg value="MusicStore.html"/>
<arg value="com.google.musicstore.MusicStore"/>
<!-- Additional arguments like -style PRETTY or -logLevel DEBUG -->
</java>
</target>
<target name="build" depends="gwtc" description="Build this project" />
<target name="clean" description="Cleans this project">
<delete dir="war/WEB-INF/classes" failonerror="false" />
<delete dir="war/musicstore" failonerror="false" />
</target>
</project>

Answer 1

run
ant
to build the project.
run
ant hosted
to run the project.
I'm confused by the concept of a normal GWT project ... I'm not sure to understand what it means. But if it means an eclipse-ready-GWT-project, you will probably be disappointed because as you noted yourself:
you can use Ant to build the project
It is an ant based project, not en eclipse project. You can call ant from eclipse, but there is no specic eclipse files (.project and .classpath) so that it can run with gwt eclipse plugin without configuring it yourself.