gwt

问题 To clarify what double submit is: When the user clicks on a submit button twice, the server will process the same POST data twice. To avoid this (apart from disabling the button after a single submit), most web frameworks like Struts provide a token mechanism. I am searching for the equivalent of this in GWT. 回答1: If you want to avoid submitting twice, how about: boolean processing = false; button.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { if (

问题 I require retrying to send a GWT RPC request if it fails (any response code other then HTTP 200). Reasons are complex so I won't elaborate on that. What I have so far is I treat all request responses in the same place like this: // We override the RpcRequestBuilder.doSetCallback method and force your service to use it // With this we can read the response headers if we need to. ((ServiceDefTarget)serviceRPC).setRpcRequestBuilder(new RpcRequestBuilder() { @Override protected void doSetCallback

问题 i recently updated from GWT 2.0.4 to 2.1.0. Since then I cannot compile my GWT application anymore. When I click on the GWT compile button of the GWT eclipse plugin I get the following error: java.lang.NoClassDefFoundError: com/google/gwt/dev/Compiler Caused by: java.lang.ClassNotFoundException: com.google.gwt.dev.Compiler at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader

问题 I would like to initialize my local data store with some data using a regular Java program (I do not want to start the Development Server and call a service/servlet), and I'm getting the following exception EXCEPTION : Exception in thread "main" java.lang.NullPointerException: No API environment is registered for this thread. at com.google.appengine.api.datastore.DatastoreApiHelper.getCurrentAppId(DatastoreApiHelper.java:108) at com.google.appengine.api.datastore.DatastoreApiHelper

问题 Greetings, I am developing GWT application where user can enter his details in Japanese. But the 'userid' and 'password' should only contain English characters(Latin Alphabet). How to validate Strings for this? 回答1: You can use String#matches() with a bit regex for this. Latin characters are covered by \w . So this should do: boolean valid = input.matches("\\w+"); This by the way also covers numbers and the underscore _ . Not sure if that harms. Else you can just use [A-Za-z]+ instead. If you

问题 I need to get the day, month, year details from a Date value but getYear() is deprecated, gives year on 2 digits, and has problems with Y2K (2008 gives 108). The java doc recommends using java.util.calendar but it is not supported in GWT. I want to avoid sending all the info back and forth between the server and client just to deal with dates. Edit: Calendar might be supported Date handling functions should be implemented in GWT futur versions : http://code.google.com/p/google-web-toolkit

问题 I want to set gwt-locale taking user chosen locale with the help of Spring LocaleContextHolder . public static final String getCurrentLocale() { return LocaleContextHolder.getLocale().getLanguage(); } I actually have login interface in Spring MVC and inner Dashboard in gwtp . The same locale user chooses in outer interface before login has to be passed to gwt as well. Unfortunately, I don't see any gwt inbuilt Locale setters. My X.gwt.xml with default locale as kh is : <inherits name="com

问题 I have tried to deploy the application with tomcat and I am succeeded. Now instead of internal GWT server I need to set tomcat as default inbuilt server and debug my application with it. The problem here I am facing is I am able to upload file into hosted mode successfully but when I tried to deploy my application to tomcat it gives me error to Struts interceptor. ERROR ParametersInterceptor.setParameters():242 - ParametersInterceptor - [setParameters]: Unexpected Exception caught setting

问题 I need a maven project configuration for a gwt project. The configuration should run in Eclipse (3.7!?) and from console (mvn, jenkins...). I tried webAppCreator delivered with gwt: webAppCreator.cmd -noant -maven -XnoEclipse -out WebAppCreated com.example.MyApp And gwt-maven-plugin Archetype. Both project look very similar in Eclipse but they have very different configurations (different directories, and use of different plugins). I think they will behave very different if project evolves

问题 The following question almost entirely describes what I'm trying to to... Add custom text to Google Visualization tooltip ... basically to add extra information to google-viz tooltips. The accepted answer looked pretty good but I'm using the GWT API. From the look of the latest version (1.1) data table doesn't support this... http://gwt-google-apis.googlecode.com/svn/javadoc/visualization/1.1/com/google/gwt/visualization/client/DataTable.html ... is anyone aware of any fix or workaround for