GWT Autobeans / NoClassDefFoundError: What am I doing wrong? - gwt

Question

I am trying to serialize a POJO to JSON in GWT using Autobeans, an I keep receiving a NoClassDefFoundError and ClassNotFoundException, both looking for org.json.JSONObject. This is in the context of tokenizing a Place.
I created a JUnit test to isolate the problem. The test is:
#Test public void testGetToken() {
SearchCriterion searchCriterion = new JavaSearchCriterion("a", "b", ImmutableList.of("c"));
ResourcesPlace place = new ResourcesPlace(ImmutableList.of(searchCriterion));
String token = new Tokenizer().getToken(place);
assertNotNull(token);
}
And my stack trace is
java.lang.NoClassDefFoundError: org/json/JSONObject
at com.google.web.bindery.autobean.shared.impl.StringQuoter.quote(StringQuoter.java:69)
at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyGetter.encodeProperty(AutoBeanCodexImpl.java:411)
at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl$PropertyGetter.visitValueProperty(AutoBeanCodexImpl.java:397)
at com.google.web.bindery.autobean.vm.impl.ProxyAutoBean.traverseProperties(ProxyAutoBean.java:260)
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.traverse(AbstractAutoBean.java:166)
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.accept(AbstractAutoBean.java:101)
at com.google.web.bindery.autobean.shared.impl.AutoBeanCodexImpl.doEncode(AutoBeanCodexImpl.java:558)
at com.google.web.bindery.autobean.shared.AutoBeanCodex.encode(AutoBeanCodex.java:83)
at com.redacted.client.place.ResourcesPlace$Tokenizer.getToken(ResourcesPlace.java:62)
at com.redacted.client.place.ResourcesPlaceTokenizerTest.testGetToken(ResourcesPlaceTokenizerTest.java:19)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassNotFoundException: org.json.JSONObject
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 32 more
And here is the relevant bit of the Tokenizer:
private MyFactory factory = AutoBeanFactorySource.create(MyFactory.class);
interface MyFactory extends AutoBeanFactory {
// Factory method for a simple AutoBean
AutoBean<SearchCriterion> person();
// Factory method for a non-simple type or to wrap an existing instance
AutoBean<SearchCriterion> person(SearchCriterion toWrap);
}
#Override
public String getToken(ResourcesPlace place) {
AutoBean<SearchCriterion> placeBean = factory.create(SearchCriterion.class, place.getSearchCriteria().get(0));
return AutoBeanCodex.encode(placeBean).getPayload();
}
I've added the Autobeans include in my .gwt.xml, but I still seem to be missing something.

Answer 1

How are you launching the test runner? Those classes originate from gwt/tools/redist/json/r2_20080312/json-1.5.jar in the GWT repo and should be packed into the gwt-servlet-deps.jar. Try adding that jar to the classpath of your test run configuration to see if that clears it up.