Correct Way to Reference a Serialized Class in Scala - java

I am trying to reference another class that has been serialized in Scala and I am new to Java in general. Here is the code sample I am having problems with
import scala.io.Source
import java.io._
class testcl extends Serializable {
val teststr = "serializestring"
}
class revivetest {
val file = "file.serial"
val fis = new FileInputStream(file)
val ois = new ObjectInputStream(fis)
val revived = ois.readObject.asInstanceOf[testcl]
}
Here is the behavior when I load the class through the REPL:
scala> val test = new revivetest
java.lang.ClassNotFoundException: testcl
at scala.tools.nsc.interpreter.AbstractFileClassLoader.findClass(AbstractFileClassLoader.scala:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:625)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at revivetest.(:26)
at .(:20)
at .()
at .(:7)
at .()
at $print()
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:734)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:983)
at scala.tools.nsc.interpreter.IMain.loadAndRunReq$1(IMain.scala:573)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:604)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:568)
at scala.tools.nsc.interpreter.ILoop.reallyInterpret$1(ILoop.scala:760)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:805)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:717)
at scala.tools.nsc.interpreter.ILoop.processLine$1(ILoop.scala:581)
at scala.tools.nsc.interpreter.ILoop.innerLoop$1(ILoop.scala:588)
at scala.tools.nsc.interpreter.ILoop.loop(ILoop.scala:591)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:882)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:837)
at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:837)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:83)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:105)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
Question: What is the correct way to reference another class that has been serialized in order to avoid the java.lang.ClassNotFoundException?

Related

JavaFX MediaPlayer throws java.lang.reflect.InvocationTargetException

I've been trying to experiment with the JavaFX MediaPlayer class, and found the following example code in a different thread:
import java.net.URI;
import java.net.URISyntaxException;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.media.MediaView;
import javafx.stage.Stage;
public class test extends Application {
#Override
public void start(Stage primaryStage)
{
//Add a scene
Group root = new Group();
Scene scene = new Scene(root, 500, 200);
URI file = null;
try {
file = new URI("/home/thomas/voodoo.mp3");
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.out.println("POOR URI SYNTAX");
}
Media pick = new Media(file.toString());
MediaPlayer player = new MediaPlayer(pick);
player.play();
//Add a mediaView, to display the media. Its necessary !
//This mediaView is added to a Pane
MediaView mediaView = new MediaView(player);
((Group)scene.getRoot()).getChildren().add(mediaView);
//show the stage
primaryStage.setTitle("Media Player");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
I adjusted the file path to point to a real audio file (/home/thomas/voodoo.mp3) and tried running it, but the console output is the following:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: uri.getScheme() == null! uri == '/home/thomas/voodoo.mp3'
at com.sun.media.jfxmedia.locator.Locator.<init>(Locator.java:211)
at javafx.scene.media.Media.<init>(Media.java:393)
at test.start(test.java:28)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$5(GtkApplication.java:139)
... 1 more
Exception running application test
Is there something wrong with my setup, or with my code?
Thanks for the help!
EDIT:
Changed to Media pick = new Media(new File("/home/thomas/voodoo.mp3").toURI().toString()); as per Nash's suggestion, but it still doesn't work. The console output is a little different now, though.
Exception in Application start method
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:389)
at com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:328)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:767)
Caused by: java.lang.RuntimeException: Exception in Application start method
at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:917)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$1(LauncherImpl.java:182)
at java.lang.Thread.run(Thread.java:745)
Caused by: MediaException: UNKNOWN : com.sun.media.jfxmedia.MediaException: Could not create player! : com.sun.media.jfxmedia.MediaException: Could not create player!
at javafx.scene.media.MediaException.exceptionToMediaException(MediaException.java:146)
at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:511)
at javafx.scene.media.MediaPlayer.<init>(MediaPlayer.java:414)
at test.start(test.java:20)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$7(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$5(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$6(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$5(GtkApplication.java:139)
... 1 more
Caused by: com.sun.media.jfxmedia.MediaException: Could not create player!
at com.sun.media.jfxmediaimpl.NativeMediaManager.getPlayer(NativeMediaManager.java:274)
at com.sun.media.jfxmedia.MediaManager.getPlayer(MediaManager.java:118)
at javafx.scene.media.MediaPlayer.init(MediaPlayer.java:467)
... 11 more
Exception running application test
The problem is your url /home/thomas/voodoo.mp3 that is not valid, indeed the scheme is missing as described into your error message (uri.getScheme() == null! uri == '/home/thomas/voodoo.mp3'), it should start with file:// as it is a file in your local file system such that it should be file:///home/thomas/voodoo.mp3.
But since it is too error prone to build the URI as you currently do because you must ensure that it is properly URL encoded (spaces should be for example replaced with %20) and you need to provide a valid scheme, you had better to use new File(path).toURI().toString() as proposed by Nash.
Try
Media pick = new Media(new File("/home/thomas/voodoo.mp3").toURI().toString());

JMockit throws "No class with name java_lang_System$currentTimeMillis" when used from Groovy

A test that works in a .java file throws an exception when put into a .groovy file. Why is that?
Groovy: 2.3.9
JMockit: 1.20
Java: 1.8.0_60
The code:
#Test
public void testSystemCurrentTimeMillis(#Mocked final System unused) {
new NonStrictExpectations() {{
System.currentTimeMillis(); result = 1438357206679L;
}};
long currentTime = System.currentTimeMillis();
Assert.assertEquals(1438357206679L, currentTime);
}
The exception:
java.lang.IllegalArgumentException: No class with name "java_lang_System$currentTimeMillis" found
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
at x.GroovyTest$1.<init>(GroovyTest.groovy:12)
at x.GroovyTest.testSystemCurrentTimeMillis(GroovyTest.groovy:11)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)

Caused by: java.lang.ClassNotFoundException: Log

When doing a remote EJB lookup (from JBoss 4.3) in J2SE, I'm encountering the following exception:
Exception in thread "main" java.lang.NoClassDefFoundError: LLog;
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Class.java:2499)
at java.lang.Class.getDeclaredField(Class.java:1951)
at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1659)
at java.io.ObjectStreamClass.access$700(ObjectStreamClass.java:72)
at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:480)
at java.io.ObjectStreamClass$2.run(ObjectStreamClass.java:468)
at java.security.AccessController.doPrivileged(Native Method)
at java.io.ObjectStreamClass.<init>(ObjectStreamClass.java:468)
at java.io.ObjectStreamClass.lookup(ObjectStreamClass.java:365)
at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:602)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1622)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.rmi.MarshalledObject.get(MarshalledObject.java:159)
at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:737)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:654)
at javax.naming.InitialContext.lookup(InitialContext.java:411)
at com.example.ShoppingBasketServiceClient.main(ShoppingBasketServiceClient.java:44)
Caused by: java.lang.ClassNotFoundException: Log
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 32 more
Here is teh codez, line 44 is the one doing the lookup:
package com.example;
import java.util.Properties;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class ShoppingBasketServiceClient {
public static void main(String[] args) throws NamingException {
Properties props = new Properties();
props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
props.setProperty("java.naming.provider.url", "jnp://localhost:1099");
String Lookup = "ejb/ShoppingBasketService/remote";
try {
InitialContext ic = new InitialContext(props);
// ShoppingBasketServiceRemote shoppingBasketService = (ShoppingBasketServiceRemote) ic.lookup(Lookup);
Object shoppingBasketService = (Object) ic.lookup(Lookup);
} catch (NamingException e) {
System.out.println("Exception:" + e);
}
}
}
I'm confused as to why it's looking for a Log class (and why the exception is not package-qualified)?
ShoppingBasketServiceRemote is just an interface that imports the javax.ejb.Remote annotation and extends another interface - neither make any reference to a Log class? Additionally, you'll see my example only casts the result to Object (but the result is the same if I swap out for the service interface)?
ShoppingBasketServiceRemote is just an interface that imports the
javax.ejb.Remote annotation and extends another interface - neither
make any reference to a Log class?
Examine all the objects referenced in the interface & their
transitive dependencies. Something will point to the "Log" class.
Also check the remote server for errors, maybe the error is on the
remote server
Try doing a simple
Class.forName("ShoppingBasketServiceRemote") - you might see it failing with the same error.
Additionally, you'll see my example only casts the result to Object
(but the result is the same if I swap out for the service interface)?
Casting the object happens after your jvm is able to load the object returned by ic.lookup(Lookup) - so the error will happen whether you cast or not.

How to use Genson provider as default in Jersey client?

I have simple client based on Jersey framework.
I want to use Genson as default JSON provider.
Firstly I created some class which implemented ContextResolver:
#Provider
public class GensonCustomResolver implements ContextResolver<Genson> {
private final Genson genson = new Genson.Builder().setSkipNull(true).setDateFormat(new UtcDateFormat()).create();
#Override
public Genson getContext(Class<?> type) {
return genson;
}
}
And UtcDateFormat class:
public class UtcDateFormat extends DateFormat {
#Override
public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition fieldPosition) {
return new StringBuffer("" + date.getTime());
}
#Override
public Date parse(String source, ParsePosition pos) {
return new Date(Long.parseLong(source));
}
}
Then I used this:
ClientConfig cfg = new DefaultClientConfig(GensonCustomResolver.class);
Client client = Client.create(cfg);
Integer meetingId = 1;
Meeting result = client.resource("http://mywebservise.com/").path("meeting")
.path(meetingId.toString()).get(ClientResponse.class).getEntity(Meeting.class);
But, it failed. Here are log:
javax.ws.rs.WebApplicationException: com.owlike.genson.TransformationException: Could not deserialize to property 'created' of class class com.mypack.model.Meeting
at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:127)
at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:565)
at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:517)
at com.mypack.ws.MeetingsTest.getItem(MeetingsTest.java:159)
at com.mypack.ws.MeetingsTest.getItem(MeetingsTest.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:85)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:659)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:845)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1153)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:108)
at org.testng.TestRunner.privateRun(TestRunner.java:771)
at org.testng.TestRunner.run(TestRunner.java:621)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:357)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:352)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:310)
at org.testng.SuiteRunner.run(SuiteRunner.java:259)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1199)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1124)
at org.testng.TestNG.run(TestNG.java:1032)
at org.gradle.api.internal.tasks.testing.testng.TestNGTestClassProcessor.stop(TestNGTestClassProcessor.java:110)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.stop(SuiteTestClassProcessor.java:58)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
at com.sun.proxy.$Proxy2.stop(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.stop(TestWorker.java:113)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:355)
at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:66)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: com.owlike.genson.TransformationException: Could not deserialize to property 'created' of class class com.mypack.model.Meeting
at com.owlike.genson.reflect.PropertyMutator.couldNotDeserialize(PropertyMutator.java:56)
at com.owlike.genson.reflect.PropertyMutator.deserialize(PropertyMutator.java:39)
at com.owlike.genson.reflect.BeanDescriptor.deserialize(BeanDescriptor.java:116)
at com.owlike.genson.reflect.BeanDescriptor.deserialize(BeanDescriptor.java:98)
at com.owlike.genson.convert.NullConverter$NullConverterWrapper.deserialize(NullConverter.java:61)
at com.owlike.genson.Genson.deserialize(Genson.java:452)
at com.owlike.genson.ext.jaxrs.GensonJsonConverter.readFrom(GensonJsonConverter.java:125)
... 48 more
Caused by: com.owlike.genson.TransformationException: Could not parse date 1432800716000
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:824)
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:788)
at com.owlike.genson.convert.NullConverter$NullConverterWrapper.deserialize(NullConverter.java:61)
at com.owlike.genson.reflect.PropertyMutator.deserialize(PropertyMutator.java:37)
... 53 more
Caused by: java.text.ParseException: Unparseable date: "1432800716000"
at java.text.DateFormat.parse(DateFormat.java:357)
at com.owlike.genson.convert.DefaultConverters$DateConverter.read(DefaultConverters.java:830)
at com.owlike.genson.convert.DefaultConverters$DateConverter.deserialize(DefaultConverters.java:822)
... 56 more
What's wrong?
P.S. Jersey client 1.8
Genson 0.98
You should upgrade to the latest Genson version, there have been some improvements and providing a custom instance to jersey is easier.
In the newer versions, Genson will automatically detect if the input is the time in millis or a date string and deser it accordingly.
The dateformat registered with useDateFormat(...) will be used during deserialization, but this will also serialize the dates as strings. If you want to serialize them as a long (which is the default in the newever versions), you have define it with useDateAsTimestamp(true).
I hope this makes things a bit more clear. You can have a look at the config options for more details.

Gdata API blogger example

I'm having trouble running this sample code for the gdata java library:
import java.net.URL;
import com.google.gdata.client.Query;
import com.google.gdata.client.blogger.BloggerService;
import com.google.gdata.data.Feed;
public class AccessBloggerSample {
public static void main(String[] args) throws Exception {
BloggerService service = new BloggerService("Testing-Blogger");
service.setUserCredentials("tmerachli#gmail.com", "XXX");
System.out.println("Google: " + BloggerService.getVersion());
URL feedUrl = new URL("http://minhchaunyc.blogspot.com/feeds/posts/default ");
Query query = new Query(feedUrl);
System.out.println("service: ");
Feed resultFeed = service.getFeed(query, Feed.class);
System.out.println("blogs: " + resultFeed.getEntries().size());
}
}
And I get the following error:
java.lang.NoClassDefFoundError: com/google/common/collect/Maps
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:118)
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:100)
at com.google.gdata.client.Service.<clinit>(Service.java:555)
at AccessBloggerSample.main(AccessBloggerSample.java:23)
Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Maps
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:118)
at com.google.gdata.wireformats.AltRegistry.<init>(AltRegistry.java:100)
at com.google.gdata.client.Service.<clinit>(Service.java:555)
at AccessBloggerSample.main(AccessBloggerSample.java:23)
at __SHELL0.run(__SHELL0.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at bluej.runtime.ExecServer$3.run(ExecServer.java:724)`
Any ideas why I'm getting this? I'm compiling and running my code through BlueJ and I extracted all the jar files into the lib directory of BlueJ and the code compiles.
You need to add guava to your Java Build-Patproject: http://code.google.com/p/guava-libraries/

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