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GWT & Google App Eclipse Plugin

Par PlaceOweb le lundi, décembre 22 2014, 20:23 - JAVA - Lien permanent

Que vaut le nouveau plugin Eclipse pour GWT (Google Web Toolkit) ?

GWT et ses versions, son dépôt et snapshots

Versions de GWT

Dépôt des fichiers de GWT et snapshots

Plugin Google pour Eclipse

Ce plugin Google Plugin for Eclipse est initialement destiné à :

En tant qu'ancien utilisateur de Cypal, le passage en Google Web Toolkit 1.6 a nécessité des modifications supplémentaires au changement des chemin vers C:\gwt-windows-1.6.4 pour charger les librairies gwt-user.jar et gwt-servlet.jar

Dans un premier temps, je me suis donc orienté vers le nouveau plugin Eclipse pour GWT,

Lors de la création du projet selon le Quick Start, la validation nécessite d'avoir les 2 SDK (GWT et Google App Engine) installés en plus du simple plugin Google Plugin for Eclipse, et ce même si l'on crée un Web Application Project seulement de type Google Web Toolkit.

Si l'on suit le Google Web Toolkit - Quick Start (avec Eclipse), on est orienté sur Using the Google Plugin for Eclipse qui ressemble fortement au Google Plugin for Eclipse - Quick Start que j'ai suivi pour générer le nouveau projet.

Il ne reste plus qu'a faire un "Run as > Web Application" pour voir le Hosted Browser utilisant Jetty et tournant sur le port 8080 à l'adresse http://localhost:8080/WebApp.html proposant par défaut à un appel RPC exécuté depuis un formulaire html dans la page web.

Et vu que cela fonctionne je ne vais pas perdre mon temps à faire fonctionner Cypal Studio for GWT (2.0 - Alpha)

Dommage par contre que l'on ne puisse pas simplement changer le Projet Facets, pour passer de Cypal vers Google. Vous trouverez sur Using Google Plugin for Eclipse with existing project les méthodes pour importer vers votre nouveau projet.

Les nouveautés de GWT 1.6

Quoi de neuf dans GWT 1.6? indique la correction du bug des @Override interdis sur les implémentations d'interfaces, et explique comment mettre à jour son code.

Les pages HTML ne seront plus généralement situé dans le dossier "public" du module du GWT.

En remplacement du Serveur Tomcat le HostedMode lance désormais Jetty et un nouveau bouton utile a fait son apparition : "Restart Server" permettant de recharger contexte, et servlet.

Déclaration des servlets

Notez que pour la déclaration des servlets, un seul fichier suffit désormais : /war/WEB-INF/web.xml

Les projets avec du code côté serveur (GWT RPC) doivent configurer un fichier web.xml dans /war/WEB-INF/ web.xml. Ce fichier web.xml doit définir et publier tous les servlets associés à l'application Web.

Nom du module ou de l'application

Pour simplifier, on peut renommer le module dans le module.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<module rename-to='myprojectgwtgoogleeclipse'>
 
<!-- Le reste -->
 
</module>

Que l'on inclue :

[html]
<html>
	<head>
	
		<!--                                           -->
		<!-- Any title is fine                         -->
		<!--                                           -->
		<title>Mon Application</title>

		<!--                                           -->
		<!-- This script loads your compiled module.   -->
		<!-- If you add any GWT meta tags, they must   -->
		<!-- be added before this line.                -->
		<!--                                           -->
    	        <script type="text/javascript" language="javascript" src="myprojectgwtgoogleeclipse/myprojectgwtgoogleeclipse.nocache.js"></script>
    	
	</head>

Les premières erreurs rencontrées

Déclaration des servlets

[WARN] Server class 'org.jboss.logging.Logger' could not be found in the web app, but was found on the system classpath  

[WARN] Unable to process 'file:/C:/workspaceEclipse/AppPlanningSmartGwtGoogleEclipse/war/WEB-INF/web.xml' for servlet validation java.lang.IllegalStateException: No such servlet: CheckInfo

[WARN] Module declares 1 <servlet> declaration(s), but a valid 'web.xml' was not found at 'C:\workspaceEclipse\AppPlanningSmartGwtGoogleEclipse\war\WEB-INF\web.xml'

[WARN] Module declares a servlet class 'com.placeoweb.app.ihm.server.debug.CheckInfo' with a mapping to '/com.placeoweb.app.ihm.ModuleAccueil/Info', but the web.xml has no corresponding mapping; please add the following lines to your web.xml:
<servlet-mapping>
  <servlet-name>CheckInfo</servlet-name>
  <url-pattern>/com.placeoweb.app.ihm.ModuleAccueil/Info</url-pattern>
</servlet-mapping>

Compilation nécessitant de la mémoire

[ERROR] Out of memory; to increase the amount of memory, use the -Xmx flag at startup (java -Xmx128M ...)

Création d'un EAR incluant le Web Application Project

A la compilation du EAR, Eclipse n'inclus pas le .war uniquement le .jar de votre projet, contrairement à l'utilisation d'un Dynamic Web Project

Voyez les post dans les groupes :

Announcing GWT 1.6...and quite a bit more

Question : I have an interesting question about the Plugin. How do I export a "Web Application Project" to a WAR and/or how do I add that project to an EAR Project?

Réponse : We did not enable the export webapp project as WAR feature for the first release. As a work around, you should be able to build the java project,

EAR + "Web Application Project" instead of "Dynamic Web Project"

Hy, i try GWT 1.6, but, because my new project is "Web Application Project" (created by Google Eclipse Plugin) instead of "Dynamic Web Project", my EAR not contain the .war (there is only include the .jar) How to publish an EAR including a "Web Application Project (Google)" ?

Effectivement en compressant le contenu du dossier war/myApp + war/WEB-INF en file.war et en les rajoutant au fichier.ear on peut déployer son web en même temps que ses beans inclus dans le EAR.

gwt.xml :

<!-- Examiner la requete -->
    <servlet class="com.placeoweb.app.ihm.server.debug.CheckInfo" path="/Info"/>

war/WEB-INF/web.xml :

<servlet>
    <servlet-name>CheckInfo</servlet-name>
    <servlet-class>com.placeoweb.app.ihm.server.debug.CheckInfo</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>CheckInfo</servlet-name>
    <url-pattern>/Info</url-pattern>
  </servlet-mapping>
<!-- Nécessite en plus -->
  <servlet-mapping>
    <servlet-name>CheckInfo</servlet-name>
    <url-pattern>/com.placeoweb.app.ihm.ModuleAccueil/Info</url-pattern>
  </servlet-mapping>

Nouveautés de GWT 2.0

Le mode devel est accessible depuis le navigateur (après avoir installer le plugin) et avoir accéder à votre page GWT suffixée du paramètre d'appel "gwt.codesvr" au serveur en écoute par défaut sur l'une de vos IP et le port 9997

&gwt.codesvr=192.168.10.20:9997

Quand vous utilisez GWT v2.0 sans -noserver, vous naviguez sur quelque de similaire à

http://localhost:3010/index.html?gwt.hosted=192.168.1.5:9997

où l'option -port est utilisée pour changer le port par défaut de Jetty (hosted devel mod : 8888) en 3010.

Pour changer le port par défaut (9997) du serveur de code GWT en 3060, ajoutez

-codeServerPort 3060

dans la boîte des arguments du programme Program arguments du lanceur de programmes d'Eclipse Run As > Run Configuration...

Voyez dans les même rubriques sur le développement de GWT

Différences du compilateur GWT

Options Google Web Toolkit 1.5.3 Compiler

WARNING: 'com.google.gwt.dev.GWTCompiler' is deprecated and will be removed in a future release.
Use 'com.google.gwt.dev.Compiler' instead.
(To disable this warning, pass -Dgwt.nowarn.legacy.tools as a JVM arg.)

Google Web Toolkit 1.5.3 (com.google.gwt.dev.GWTCompiler)
GWTCompiler [-logLevel level] [-treeLogger] [-workDir dir] [-gen dir] [-style style] [-ea] [-validateOnly] [-out dir] [-localWorkers count] module[s] 
where 
  -logLevel      The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -treeLogger    Logs output in a graphical tree view
  -workDir       The compiler work directory (must be writeable; defaults to a system temp dir)
  -gen           The directory into which generated files will be written for review
  -style         Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea            Debugging: causes the compiled output to check assert statements.
  -validateOnly  Validate all source code, but do not compile
  -out           The directory to write output files into (defaults to current)
  -localWorkers  Specifies the number of local workers to use when compiling permutations
and 
  module[s]      Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit 1.6.4 Compiler

Google Web Toolkit 1.6.4 (com.google.gwt.dev.Compiler)
Compiler [-logLevel level] [-treeLogger] [-workDir dir] [-gen dir] [-style style] [-ea] [-validateOnly] [-localWorkers count] [-war dir] [-extra dir] module[s] 
where 
  -logLevel      The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -treeLogger    Logs output in a graphical tree view
  -workDir       The compiler work directory (must be writeable; defaults to a system temp dir)
  -gen           The directory into which generated files will be written for review
  -style         Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea            Debugging: causes the compiled output to check assert statements.
  -validateOnly  Validate all source code, but do not compile
  -localWorkers  Specifies the number of local workers to use when compiling permutations
  -war           The war directory to write output files into (defaults to war)
  -extra         The directory into which extra, non-deployed files will be written
and 
  module[s]      Specifies the name(s) of the module(s) to compile

Vous constaterez que la différence majeure se situe dans la classe utilisée et l'option "out" en 1.5 (com.google.gwt.dev.GWTCompiler) qui est désormais "war" sur la 1.6 (com.google.gwt.dev.Compiler).

Options Google Web Toolkit 2.0.0 Compiler

C:\java\java.libs\gwt-2.0.0>"C:\Program Files (x86)\Java\jre6\bin\java" -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module[s]'
Google Web Toolkit 2.0.0
Compiler [-logLevel level] [-workDir dir] [-gen dir] [-style style] [-ea] [-XdisableClassMetadata] [-XdisableCastChecking] [-validateOnly] [-draftCompile] [-compileReport] [-localWorkers count] [-war dir] [-extra dir] module[s]

where
  -logLevel               The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -gen                    Debugging: causes normally-transient generated types to be saved in the specified directory
  -style                  Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea                     Debugging: causes the compiled output to check assert statements
  -XdisableClassMetadata  EXPERIMENTAL: Disables some java.lang.Class methods (e.g. getName())
  -XdisableCastChecking   EXPERIMENTAL: Disables run-time checking of cast operations
  -validateOnly           Validate all source code, but do not compile
  -draftCompile           Enable faster, but less-optimized, compilations
  -compileReport          Create a compile report that tells the Story of Your Compile
  -localWorkers           The number of local workers to use when compiling permutations
  -war                    The directory into which deployable output files will be written (defaults to 'war')
  -extra                  The directory into which extra files, not intended for deployment, will be written
and
  module[s]               Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit 2.4.0 Compiler

D:\java\java.libs\gwt-2.4.0>java -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module [s]'
Google Web Toolkit 2.4.0
Compiler  [-logLevel level]  [-workDir dir]  [-gen dir]  [-style style]  [-ea]  [-XdisableClassMetadata]  [-XdisableCastChecking]  [-validateOnly]  [-draftCompile]  [-optimize level]  [-compileReport]  [-strict]  [-localWorkers count]  [-war dir]  [-deploy dir]  [-extra dir] module [s]

where
  -logLevel               The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -gen                    Debugging: causes normally-transient generated types to be saved in the specified directory
  -style                  Script output style: OBF [USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea                     Debugging: causes the compiled output to check assert statements
  -XdisableClassMetadata  EXPERIMENTAL: Disables some java.lang.Class methods (e.g. getName())
  -XdisableCastChecking   EXPERIMENTAL: Disables run-time checking of cast operations
  -validateOnly           Validate all source code, but do not compile
  -draftCompile           Enable faster, but less-optimized, compilations
  -optimize               Sets the optimization level used by the compiler.  0=none 9=maximum.
  -compileReport          Create a compile report that tells the Story of Your Compile
  -strict                 Only succeed if no input files have errors
  -localWorkers           The number of local workers to use when compiling permutations
  -war                    The directory into which deployable output files will be written (defaults to 'war')
  -deploy                 The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                  The directory into which extra files, not intended for deployment, will be written
and
  module [s]               Specifies the name(s) of the module(s) to compile

Pour GWT 2 voyez les articles :

Options Google Web Toolkit 2.5.0 Compiler

D:\java\java.libs\gwt-2.5.0>java -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module [s]'
Google Web Toolkit 2.5.0
Compiler  [-logLevel level]  [-workDir dir]  [-gen dir]  [-style style]  [-ea]  [-XdisableClassMetadata]  [-XdisableCastChecking]  [-validateOnly]  [-draftCompile]  [-optimize level]  [-compileReport]  [-strict]  [-XenableClosureCompiler]  [-XfragmentMerge numFragments]  [-XfragmentCount numFragments]  [-localWorkers count]  [-war dir]  [-deploy dir]  [-extra dir] module [s]

where
  -logLevel                The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                 The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -gen                     Debugging: causes normally-transient generated types to be saved in the specified directory
  -style                   Script output style: OBF [USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea                      Debugging: causes the compiled output to check assert statements
  -XdisableClassMetadata   EXPERIMENTAL: Disables some java.lang.Class methods (e.g. getName())
  -XdisableCastChecking    EXPERIMENTAL: Disables run-time checking of cast operations
  -validateOnly            Validate all source code, but do not compile
  -draftCompile            Enable faster, but less-optimized, compilations
  -optimize                Sets the optimization level used by the compiler.  0=none 9=maximum.
  -compileReport           Create a compile report that tells the Story of Your Compile
  -strict                  Only succeed if no input files have errors
  -XenableClosureCompiler  EXPERIMENTAL: Enables Closure Compiler optimizations
  -XfragmentMerge          DEPRECATED (use -XfragmentCount instead): Enables Fragment merging code splitter.
  -XfragmentCount          EXPERIMENTAL: Limits of number of fragments using a code splitter that merges split points.
  -localWorkers            The number of local workers to use when compiling permutations
  -war                     The directory into which deployable output files will be written (defaults to 'war')
  -deploy                  The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                   The directory into which extra files, not intended for deployment, will be written
and
  module [s]                Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit 2.5.1 Compiler

D:\java\java.libs\gwt-2.5.1>java -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module [s]'
Google Web Toolkit 2.5.1
Compiler  [-logLevel level]  [-workDir dir]  [-gen dir]  [-style style]  [-ea]  [-XdisableClassMetadata]  [-XdisableCastChecking]  [-validateOnly]  [-draftCompile]  [-optimize level]  [-compileReport]  [-strict]  [-XenableClosureCompiler]  [-XfragmentMerge numFragments]  [-XfragmentCount numFragments]  [-localWorkers count]  [-war dir]  [-deploy dir]  [-extra dir] module [s]

where
  -logLevel                The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                 The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -gen                     Debugging: causes normally-transient generated types to be saved in the specified directory
  -style                   Script output style: OBF [USCATED], PRETTY, or DETAILED (defaults to OBF)
  -ea                      Debugging: causes the compiled output to check assert statements
  -XdisableClassMetadata   EXPERIMENTAL: Disables some java.lang.Class methods (e.g. getName())
  -XdisableCastChecking    EXPERIMENTAL: Disables run-time checking of cast operations
  -validateOnly            Validate all source code, but do not compile
  -draftCompile            Enable faster, but less-optimized, compilations
  -optimize                Sets the optimization level used by the compiler.  0=none 9=maximum.
  -compileReport           Create a compile report that tells the Story of Your Compile
  -strict                  Only succeed if no input files have errors
  -XenableClosureCompiler  EXPERIMENTAL: Enables Closure Compiler optimizations
  -XfragmentMerge          DEPRECATED (use -XfragmentCount instead): Enables Fragment merging code splitter.
  -XfragmentCount          EXPERIMENTAL: Limits of number of fragments using a code splitter that merges split points.
  -localWorkers            The number of local workers to use when compiling permutations
  -war                     The directory into which deployable output files will be written (defaults to 'war')
  -deploy                  The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                   The directory into which extra files, not intended for deployment, will be written
and
  module [s]                Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit 2.6.0 Compiler

D:\java\java.libs\gwt-2.6.0>java -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module [s]'
Google Web Toolkit 2.6.0
Compiler  [-logLevel level]  [-workDir dir]  [- [no]compileReport]  [-X [no]checkCasts]  [-X [no]classMetadata]  [- [no]draftCompile]  [- [no]checkAssertions]  [-X [no]closureCompiler]  [-XfragmentCount numFragments]  [-XfragmentMerge numFragments]  [-gen dir]  [-optimize level]  [- [no]saveSource]  [-style style]  [- [no]failOnError]  [-X [no]enforceStrictResources]  [- [no]validateOnly]  [-sourceLevel  [auto, 1.6, 1.7]]  [-localWorkers count]  [-war dir]  [-deploy dir]  [-extra dir]  [-saveSourceOutput dir] module [s]

where
  -logLevel                     The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                      The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  - [no]compileReport            Compile a report that tells the "Story of Your Compile". (defaults to OFF)
  -X [no]checkCasts              EXPERIMENTAL: Insert run-time checking of cast operations. (defaults to ON)
  -X [no]classMetadata           EXPERIMENTAL: Include metadata for some java.lang.Class methods (e.g. getName()). (defaults to ON)
  - [no]draftCompile             Compile quickly with minimal optimizations. (defaults to OFF)
  - [no]checkAssertions          Include assert statements in compiled output. (defaults to OFF)
  -X [no]closureCompiler         EXPERIMENTAL: Compile output Javascript with the Closure compiler for even further optimizations. (defaults to OFF)
  -XfragmentCount               EXPERIMENTAL: Limits of number of fragments using a code splitter that merges split points.
  -XfragmentMerge               DEPRECATED (use -XfragmentCount instead): Enables Fragment merging code splitter.
  -gen                          Debugging: causes normally-transient generated types to be saved in the specified directory
  -optimize                     Sets the optimization level used by the compiler.  0=none 9=maximum.
  - [no]saveSource               Enables saving source code needed by debuggers. Also see -debugDir. (defaults to OFF)
  -style                        Script output style: OBF [USCATED], PRETTY, or DETAILED (defaults to OBF)
  - [no]failOnError              Fail compilation if any input file contains an error. (defaults to OFF)
  -X [no]enforceStrictResources  EXPERIMENTAL: Avoid adding implicit dependencies on "client" and "public" for modules that don't define any dependencies. (defaults to OFF)
  - [no]validateOnly             Validate all source code, but do not compile. (defaults to OFF)
  -sourceLevel                  Specifies Java source level (defaults to auto:1.7)
  -localWorkers                 The number of local workers to use when compiling permutations
  -war                          The directory into which deployable output files will be written (defaults to 'war')
  -deploy                       The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                        The directory into which extra files, not intended for deployment, will be written
  -saveSourceOutput             Overrides where source files useful to debuggers will be written. Default: saved with extras.
and
  module [s]                     Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit 2.7.0 Compiler

D:\java\java.libs\gwt-2.7.0>java -cp gwt-dev.jar com.google.gwt.dev.Compiler
Missing required argument 'module[s]'
Google Web Toolkit 2.7.0
Compiler [-logLevel level] [-workDir dir] [-[no]compileReport] [-X[no]checkCasts] [-X[no]classMetadata] [-[no]draftCompile] [-[no]checkAssertions] [-X[no]closureCompiler] [-XfragmentCount numFragments] [-XfragmentMerge numFragments] [-gen dir] [-[no]incrementalCompileWarnings] [-XjsInteropMode [NONE, JS, CLOSURE]] [-missingDepsFile file] [-Xnamespace PACKAGE, NONE] [-optimize level] [-[no]overlappingSourceWarnings] [-[no]saveSource] [-style style] [-[no]failOnError] [-X[no]enforceStrictResources] [-[no]validateOnly] [-sourceLevel [auto, 1.6, 1.7]] [-localWorkers count] [-[no]incremental] [-war dir] [-deploy dir] [-extra dir] [-saveSourceOutput dir] [-XmethodNameDisplayMode NONE | ONLY_METHOD_NAME | ABBREVIATED | FULL] module[s]

where
  -logLevel                        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -workDir                         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -[no]compileReport               Compile a report that tells the "Story of Your Compile". (defaults to OFF)
  -X[no]checkCasts                 EXPERIMENTAL: Insert run-time checking of cast operations. (defaults to ON)
  -X[no]classMetadata              EXPERIMENTAL: Include metadata for some java.lang.Class methods (e.g. getName()). (defaults to ON)
  -[no]draftCompile                Compile quickly with minimal optimizations. (defaults to OFF)
  -[no]checkAssertions             Include assert statements in compiled output. (defaults to OFF)
  -X[no]closureCompiler            EXPERIMENTAL: Compile output Javascript with the Closure compiler for even further optimizations. (defaults to OFF)
  -XfragmentCount                  EXPERIMENTAL: Limits of number of fragments using a code splitter that merges split points.
  -XfragmentMerge                  DEPRECATED (use -XfragmentCount instead): Enables Fragment merging code splitter.
  -gen                             Debugging: causes normally-transient generated types to be saved in the specified directory
  -[no]incrementalCompileWarnings  Whether to show warnings during monolithic compiles for issues that will break in incremental compiles (strict compile errors, strict source directory inclusion, missing dependencies). (defaults to OFF)
  -XjsInteropMode                  Specifies JsInterop mode, either NONE, JS, or CLOSURE (defaults to NONE)
  -missingDepsFile                 Specifies a file into which detailed missing dependency information will be written.
  -Xnamespace                      Puts most JavaScript globals into namespaces. Default: PACKAGE for -draftCompile, otherwise NONE
  -optimize                        Sets the optimization level used by the compiler.  0=none 9=maximum.
  -[no]overlappingSourceWarnings   Whether to show warnings during monolithic compiles for overlapping source inclusion. (defaults to OFF)
  -[no]saveSource                  Enables saving source code needed by debuggers. Also see -debugDir. (defaults to OFF)
  -style                           Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)
  -[no]failOnError                 Fail compilation if any input file contains an error. (defaults to OFF)
  -X[no]enforceStrictResources     EXPERIMENTAL: Avoid adding implicit dependencies on "client" and "public" for modules that don't define any dependencies. (defaults to OFF)
  -[no]validateOnly                Validate all source code, but do not compile. (defaults to OFF)
  -sourceLevel                     Specifies Java source level (defaults to auto:1.7)
  -localWorkers                    The number of local workers to use when compiling permutations
  -[no]incremental                 Compiles faster by reusing data from the previous compile. (defaults to OFF)
  -war                             The directory into which deployable output files will be written (defaults to 'war')
  -deploy                          The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                           The directory into which extra files, not intended for deployment, will be written
  -saveSourceOutput                Overrides where source files useful to debuggers will be written. Default: saved with extras.
  -XmethodNameDisplayMode          Emit extra information allow chrome dev tools to display Java identifiers in many places instead of JavaScript functions.
and
  module[s]                        Specifies the name(s) of the module(s) to compile

Options Google Web Toolkit Development Mode (HostedMode)

Options Google Web Toolkit 1.6.4 HostedMode

HostedMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logLevel level] [-gen dir] [-style style] [-ea] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] [-localWorkers count] module[s] 

where 
 -noserver      Prevents the embedded web server from running
 -port          Specifies the TCP port for the embedded web server (defaults to 8888)
 -whitelist     Allows the user to browse URLs that match the specified regexes (comma or space separated)
 -blacklist     Prevents the user browsing URLs that match the specified regexes (comma or space separated)
 -logLevel      The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
 -gen           The directory into which generated files will be written for review
 -style         Script output style: OBF[USCATED], PRETTY, or DETAILED (defaults to OBF)
 -ea            Debugging: causes the compiled output to check assert statements.
 -server        Specifies a different embedded web server to run (must implement ServletContainerLauncher)
 -startupUrl    Automatically launches the specified URL
 -war           The war directory to write output files into (defaults to war)
 -extra         The directory into which extra, non-deployed files will be written
 -workDir       The compiler work directory (must be writeable; defaults to a system temp dir)
 -localWorkers  Specifies the number of local workers to use when compiling permutations
and 
 module[s]      Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.0.0 DevMode

C:\java\java.libs\gwt-2.0.0>"C:\Program Files (x86)\Java\jre6\bin\java" -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module[s]'
Google Web Toolkit 2.0.0
DevMode [-noserver] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logdir directory] [-logLevel level] [-gen dir] [-codeServerPort port-number | "auto"] [-server servletContainerLauncher] [-startupUrl url] [-war dir] [-extra dir] [-workDir dir] module[s]

where
  -noserver        Prevents the embedded web server from running
  -port            Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist       Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist       Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir          Logs to a file in the given directory, as well as graphically
  -logLevel        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen             Debugging: causes normally-transient generated types to be saved in the specified directory
  -codeServerPort  Specifies the TCP port for the code server (defaults to 9997)
  -server          Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl      Automatically launches the specified URL
  -war             The directory into which deployable output files will be written (defaults to 'war')
  -extra           The directory into which extra files, not intended for deployment, will be written
  -workDir         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
and
  module[s]        Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.4.0 DevMode

D:\java\java.libs\gwt-2.4.0>java -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module [s]'
Google Web Toolkit 2.4.0
DevMode  [-noserver]  [-port port-number | "auto"]  [-whitelist whitelist-string]  [-blacklist blacklist-string]  [-logdir directory]  [-logLevel level]  [-gen dir]  [-bindAddress host-name-or-address]  [-codeServerPort port-number | "auto"]  [-server servletContainerLauncher [:args]]  [-startupUrl url]  [-war dir]  [-deploy dir]  [-extra dir]  [-workDir dir] module [s]

where
  -noserver        Prevents the embedded web server from running
  -port            Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist       Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist       Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir          Logs to a file in the given directory, as well as graphically
  -logLevel        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen             Debugging: causes normally-transient generated types to be saved in the specified directory
  -bindAddress     Specifies the bind address for the code server and web server (defaults to 127.0.0.1)
  -codeServerPort  Specifies the TCP port for the code server (defaults to 9997)
  -server          Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl      Automatically launches the specified URL
  -war             The directory into which deployable output files will be written (defaults to 'war')
  -deploy          The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra           The directory into which extra files, not intended for deployment, will be written
  -workDir         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
and
  module [s]        Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.5.0 DevMode

D:\java\java.libs\gwt-2.5.0>java -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module [s]'
Google Web Toolkit 2.5.0
DevMode  [-noserver]  [-port port-number | "auto"]  [-whitelist whitelist-string]  [-blacklist blacklist-string]  [-logdir directory]  [-logLevel level]  [-gen dir]  [-bindAddress host-name-or-address]  [-codeServerPort port-number | "auto"]  [-server servletContainerLauncher [:args]]  [-startupUrl url]  [-war dir]  [-deploy dir]  [-extra dir]  [-workDir dir] module [s]

where
  -noserver        Prevents the embedded web server from running
  -port            Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist       Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist       Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir          Logs to a file in the given directory, as well as graphically
  -logLevel        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen             Debugging: causes normally-transient generated types to be saved in the specified directory
  -bindAddress     Specifies the bind address for the code server and web server (defaults to 127.0.0.1)
  -codeServerPort  Specifies the TCP port for the code server (defaults to 9997)
  -server          Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl      Automatically launches the specified URL
  -war             The directory into which deployable output files will be written (defaults to 'war')
  -deploy          The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra           The directory into which extra files, not intended for deployment, will be written
  -workDir         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
and
  module [s]        Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.5.1 DevMode

D:\java\java.libs\gwt-2.5.1>java -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module [s]'
Google Web Toolkit 2.5.1
DevMode  [-noserver]  [-port port-number | "auto"]  [-whitelist whitelist-string]  [-blacklist blacklist-string]  [-logdir directory]  [-logLevel level]  [-gen dir]  [-bindAddress host-name-or-address]  [-codeServerPort port-number | "auto"]  [-server servletContainerLauncher [:args]]  [-startupUrl url]  [-war dir]  [-deploy dir]  [-extra dir]  [-workDir dir] module [s]

where
  -noserver        Prevents the embedded web server from running
  -port            Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist       Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist       Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir          Logs to a file in the given directory, as well as graphically
  -logLevel        The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen             Debugging: causes normally-transient generated types to be saved in the specified directory
  -bindAddress     Specifies the bind address for the code server and web server (defaults to 127.0.0.1)
  -codeServerPort  Specifies the TCP port for the code server (defaults to 9997)
  -server          Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl      Automatically launches the specified URL
  -war             The directory into which deployable output files will be written (defaults to 'war')
  -deploy          The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra           The directory into which extra files, not intended for deployment, will be written
  -workDir         The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
and
  module [s]        Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.6.0 DevMode

D:\java\java.libs\gwt-2.6.0>java -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module [s]'
Google Web Toolkit 2.6.0
DevMode  [- [no]startServer]  [-port port-number | "auto"]  [-whitelist whitelist-string]  [-blacklist blacklist-string]  [-logdir directory]  [-logLevel level]  [-gendir]  [-bindAddress host-name-or-address]  [-codeServerPort port-number | "auto"]  [-server servletContainerLauncher [:args]]  [-startupUrl url]  [-war dir]  [-deploydir]  [-extra dir]  [-workDir dir]  [-sourceLevel  [auto, 1.6, 1.7]] module [s]

where
  - [no]startServer  Starts a servlet container serving the directory specified by the -war flag. (defaults to ON)
  -port             Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist        Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist        Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir           Logs to a file in the given directory, as well as graphically
  -logLevel         The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen              Debugging: causes normally-transient generated types to be saved in the specified directory
  -bindAddress      Specifies the bind address for the code server and web server (defaults to 127.0.0.1)
  -codeServerPort   Specifies the TCP port for the code server (defaults to 9997)
  -server           Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl       Automatically launches the specified URL
  -war              The directory into which deployable output files will be written (defaults to 'war')
  -deploy           The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra            The directory into which extra files, not intended for deployment, will be written
  -workDir          The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -sourceLevel      Specifies Java source level (defaults to auto:1.7)
and
  module [s]         Specifies the name(s) of the module(s) to host

Options Google Web Toolkit 2.7.0 DevMode

D:\java\java.libs\gwt-2.7.0>java -cp gwt-dev.jar com.google.gwt.dev.DevMode
Missing required argument 'module[s]'
Google Web Toolkit 2.7.0
DevMode [-[no]startServer] [-port port-number | "auto"] [-whitelist whitelist-string] [-blacklist blacklist-string] [-logdir directory] [-logLevel level] [-gendir] [-bindAddress host-name-or-address] [-codeServerPort port-number | "auto"] [-[no]superDevMode] [-server servletContainerLauncher[:args]] [-startupUrl url][-war dir] [-deploy dir] [-extra dir] [-modulePathPrefix ] [-workDir dir] [-XmethodNameDisplayMode NONE | ONLY_METHOD_NAME | ABBREVIATED | FULL] [-sourceLevel [auto, 1.6, 1.7]] [-XjsInteropMode [NONE, JS, CLOSURE]] [-[no]incremental] module[s]

where
  -[no]startServer         Starts a servlet container serving the directory specified by the -war flag. (defaults to ON)
  -port                    Specifies the TCP port for the embedded web server (defaults to 8888)
  -whitelist               Allows the user to browse URLs that match the specified regexes (comma or space separated)
  -blacklist               Prevents the user browsing URLs that match the specified regexes (comma or space separated)
  -logdir                  Logs to a file in the given directory, as well as graphically
  -logLevel                The level of logging detail: ERROR, WARN, INFO, TRACE, DEBUG, SPAM, or ALL
  -gen                     Debugging: causes normally-transient generated types to be saved in the specified directory
  -bindAddress             Specifies the bind address for the code server and web server (defaults to 127.0.0.1)
  -codeServerPort          Specifies the TCP port for the code server (defaults to 9997 for classic Dev Mode or 9876 for Super Dev Mode)
  -[no]superDevMode        Runs Super Dev Mode instead of classic Development Mode. (defaults to ON)
  -server                  Specify a different embedded web server to run (must implement ServletContainerLauncher)
  -startupUrl              Automatically launches the specified URL
  -war                     The directory into which deployable output files will be written (defaults to 'war')
  -deploy                  The directory into which deployable but not servable output files will be written (defaults to 'WEB-INF/deploy' under the -war directory/jar, and may be the same as the -extra directory/jar)
  -extra                   The directory into which extra files, not intended for deployment, will be written
  -modulePathPrefix        The subdirectory inside the war dir where DevMode will create module directories. (defaults empty for top level)
  -workDir                 The compiler's working directory for internal use (must be writeable; defaults to a system temp dir)
  -XmethodNameDisplayMode  Emit extra information allow chrome dev tools to display Java identifiers in many places instead of JavaScript functions.
  -sourceLevel             Specifies Java source level (defaults to auto:1.7)
  -XjsInteropMode          Specifies JsInterop mode, either NONE, JS, or CLOSURE (defaults to NONE)
  -[no]incremental         Compiles faster by reusing data from the previous compile. (defaults to ON)
and
  module[s]                Specifies the name(s) of the module(s) to host

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