Hi, I have exactly the same error I cannot resolve it. I am using google eclipse plug in to create my project. Google is not providing a simple working demo of RequestFactory (including all the jar references the web.xml etc). They make things difficult for no reason.
So far I am using RPC to manipulate read/write/edit data. Thanks Savilak On Sun, Dec 5, 2010 at 6:41 AM, ali <[email protected]> wrote: > I am hitting the following error when using RequestFactory (it's about > ValidatorFactory impl not available). Does any one know why ? > > 20:32:35.092 [ERROR] [Skulgia] Uncaught exception escaped > java.lang.RuntimeException: Server Error 500 <html> > <head> > <meta http-equiv="Content-Type" content="text/html; > charset=ISO-8859-1"/> > <title>Error 500 javax/validation/ValidatorFactory</title> > </head> > <body><h2>HTTP ERROR 500</h2> > <p>Problem accessing /Skulgia/gwtRequest. Reason: > <pre> javax/validation/ValidatorFactory</pre></p><h3>Caused by:</ > h3><pre>java.lang.NoClassDefFoundError: javax/validation/ > ValidatorFactory > at > > com.google.gwt.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java: > 111) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 58) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 122) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 388) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 182) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 765) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:349) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 542) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:938) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java: > 218) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java: > 404) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 409) > at org.mortbay.thread.QueuedThreadPool > $PoolThread.run(QueuedThreadPool.java:582) > Caused by: java.lang.ClassNotFoundException: > javax.validation.ValidatorFactory > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at > > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: > 151) > at java.lang.ClassLoader.loadClass(Unknown Source) > ... 28 more > </pre> > <h3>Caused by:</h3><pre>java.lang.ClassNotFoundException: > javax.validation.ValidatorFactory > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at > > com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java: > 151) > at java.lang.ClassLoader.loadClass(Unknown Source) > at > > com.google.gwt.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java: > 111) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: > 511) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1166) > at > > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java: > 58) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: > 43) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java: > 122) > at org.mortbay.jetty.servlet.ServletHandler > $CachedChain.doFilter(ServletHandler.java:1157) > at > org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: > 388) > at > org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: > 216) > at > org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: > 182) > at > org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: > 765) > at > org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418) > at > > com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java: > 70) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at com.google.appengine.tools.development.JettyContainerService > $ApiProxyHandler.handle(JettyContainerService.java:349) > at > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: > 152) > at org.mortbay.jetty.Server.handle(Server.java:326) > at > org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: > 542) > at org.mortbay.jetty.HttpConnection > $RequestHandler.content(HttpConnection.java:938) > at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755) > at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java: > 218) > at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java: > 404) > at > org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java: > 409) > at org.mortbay.thread.QueuedThreadPool > $PoolThread.run(QueuedThreadPool.java:582) > </pre> > <hr /><i><small>Powered by Jetty://</small></i><br/> > <br/> > <br/> > <br/> > > > On Dec 4, 8:14 pm, ali <[email protected]> wrote: > > I haven't seen any of this in the documentation either! > > > > On Nov 18, 4:57 pm, Nicholas <[email protected]> wrote: > > > > > > > > > > > > > > > > > One more thing I forgot to mention. You have to add an init-param to > > > therequestFactoryServletto identify your implementation class for > > > the user information class. (This is in your web.xml). Mine looks > > > like this. > > > > > <servlet> > > > <servlet-name>requestFactoryServlet</servlet-name> > > > <servlet- > > > class>com.google.gwt.requestfactory.server.RequestFactoryServlet</ > > > servlet-class> > > > <init-param> > > > <param-name>userInfoClass</param-name> > > > > <param-value>com.eatrightapp.server.domain.GaeUserInformation</ > > > param-value> > > > </init-param> > > > </servlet> > > > > > Without that specified, your login widget will always show the user as > > > "Dummy User" and the logout link will not be functional. Now that all > > > this is in place, mine is completely working as expected. > > > > > Thanks, > > > Nick > > > > > On Nov 18, 6:18 pm, Nicholas <[email protected]> wrote: > > > > > > Richard, I was missing that initialization to requestFactory as well. > > > > I had to add that, and I had to add the following sections to my > > > > web.xml: > > > > > > <servlet> > > > > <servlet-name>requestFactoryServlet</servlet-name> > > > > <servlet- > > > > class>com.google.gwt.requestfactory.server.RequestFactoryServlet</ > > > > servlet-class> > > > > </servlet> > > > > > > <servlet> > > > > <servlet-name>remoteapi</servlet-name> > > > > <servlet- > > > > > class>com.google.apphosting.utils.remoteapi.RemoteApiServlet</servlet- > > > > class> > > > > </servlet> > > > > > > <servlet-mapping> > > > > <servlet-name>remoteapi</servlet-name> > > > > <url-pattern>/remote_api</url-pattern> > > > > </servlet-mapping> > > > > > > <servlet-mapping> > > > > <servlet-name>requestFactoryServlet</servlet-name> > > > > <url-pattern>/gwtRequest</url-pattern> > > > > </servlet-mapping> > > > > > > In addition, I added the appengine-tools-api.jar files to my web-inf/ > > > > lib folder. > > > > > > I had to add the following to my apps gwt.xml file: > > > > > > <inherits name='com.google.gwt.json.JSON'/> > > > > > > Finally, I added json.jar to my web-inf/lib folder. I'm not sure > > > > where this file originated, but I finally tracked down a copy at: > http://google-web-toolkit.googlecode.com/svn-history/r7687/trunk/bike... > > > > > > Now the app seems to be running without any errors. I think some of > > > > this needs to go into the RequestBuilder/MVP documentation. If it's > > > > there I completely overlooked it. > > > > > > Nick > > > > > > On Nov 18, 2:05 pm, Richard Berger <[email protected]> wrote: > > > > > > > As is typical - after working on this for hours, I think I found my > > > > > problem 10 minutes after posting. Since I am trying to avoid MVP > (for > > > > > now, until the brain cell count improves), I had not initialized my > > > > > RequestFactory. Adding: > > > > > final EventBus eventBus = new SimpleEventBus(); > > > > > requestFactory.initialize(eventBus); > > > > > has moved me past my NPE. Into other errors of course... > > > > > > > Thanks for listening.... > > > > > > > RB > > > > > > > On Nov 18, 11:50 am, Richard Berger <[email protected]> > wrote: > > > > > > > > I am having a very similar problem - NullPointerException when I > call > > > > > > fire() (the NPE is in AbstractRequestContext.doFire()). So I am > > > > > > wondering if you have found a solution to your problem. > > > > > > > > The code with the fire() is: > > > > > > CommitmentSystemRequestFactory requestFactory = > > > > > > GWT.create(CommitmentSystemRequestFactory.class); > > > > > > requestFactory.commitmentRequest().countCommitments().fire( > > > > > > new Receiver<Long>() { > > > > > > @Override > > > > > > public void onSuccess(Long response) { > > > > > > Window.alert("Done!"); > > > > > > } > > > > > > }); > > > > > > > > My CommitmentRequest class has: > > > > > > @Service (Commitment.class) > > > > > > public interface CommitmentRequest extends RequestContext { > > > > > > Request<Long> countCommitments(); > > > > > > > > My Commitment.java class has: > > > > > > public static long countCommitments() { > > > > > > .... > > > > > > } > > > > > > > > Some other notes... > > > > > > * I have also been going through the Expenses sample app, both > the > > > > > > description at: > http://code.google.com/webtoolkit/doc/latest/DevGuideRequestFactory.h... > > > > > > and the sample code. > > > > > > * I am NOT using JPA. My first learning project for GWT/GAE was > with > > > > > > JPA, but now I wanted to try the RequestFactory and then add > > > > > > Objectify. > > > > > > * I am NOT using MVP. I just don't yet have the critical mass of > > > > > > brain cells necessary. > > > > > > > > Thanks for any updates or advice... > > > > > > RB > > > > > > > > On Nov 18, 9:05 am, Nicholas <[email protected]> wrote: > > > > > > > > > Thanks, you got me on the right rack. I didn't realize that > more > > > > > > > information on the exceptions was available in the dev mode > console of > > > > > > > eclipse. My domain entity objects had some Boolean accessors > which I > > > > > > > had named isProperty() instead of getProperty(). I changed all > of > > > > > > > those, and also made the domain service methods 'static' like > you > > > > > > > suggested. > > > > > > > > > Now the application is running, but when it fires a request for > > > > > > > UserInformation, I get a null pointer exception. After > debugging, it > > > > > > > gets into AbstractRequestContext.doFire(receiver) method, which > > > > > > > attempts to call > requestFactory.getRequestTransport().send(...). > > > > > > > requestFactory.getRequestTransport() returns NULL so it throws > a Null > > > > > > > Pointer Exception. Do I need to configure the transport > somewhere? I > > > > > > > didn't see anything in the documentation or the Expenses sample > app. > > > > > > > > > The portion of my code that is initiating this is (~ line 60) > in:http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src. > .. > > > > > > > > > On Nov 17, 6:28 pm, Thomas Broyer <[email protected]> wrote: > > > > > > > > > > On 17 nov, 21:06, Nicholas <[email protected]> wrote: > > > > > > > > > > > I am working on a small GWT app (I have used GWT in the > past but it > > > > > > > > > was a while ago), trying to learn the new MVP and > RequestFactory. I > > > > > > > > > am not sure if I am just approaching this wrong, or have > some error I > > > > > > > > > can't spot. When I add a call to instantiate my app's > RequestFactory, > > > > > > > > > it no longer runs. It gives me "Deferred Binding Failed" > for my > > > > > > > > > request factory. > > > > > > > > > > > I went back and double-checked the domain / entity objects > and I think > > > > > > > > > I have the required pattern in place (implicit no-arg > constructor, > > > > > > > > > getId(), findEntity(id) and getVersion()). > > > > > > > > > > > Some of the relevant code: > > > > > > > > > > > Domain objects: > http://code.google.com/p/eatright/source/browse/#svn/trunk/EatRightAp... > > > > > > > > > > > EntityRequest and Proxy objects: > http://code.google.com/p/eatright/source/browse/#svn/trunk/EatRightAp... > > > > > > > > > > > This class instantiates the RequestFactory (line 35) and > passes it to > > > > > > > > > the Activity (line 41) > http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src... > > > > > > > > > > > This class is where I have a method utilizing the request > factory. (~ > > > > > > > > > line 49) > http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src... > > > > > > > > > > > > http://code.google.com/p/eatright/source/browse/trunk/EatRightApp/src... > > > > > > > > > > > Any ideas? > > > > > > > > > > Your "service methods" in your domain objects aren't static, > but > > > > > > > > aren't declared as InstanceRequest in your RequestContext. > > > > > > > > (don't you have more specific errors than "deferred binding > failed"?) > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-web-toolkit%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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