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POAsyncResponse throws Exception if not completed within method life time
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  1. POAsyncResponse throws Exception if not completed within method life time
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    copied!<p>I just tried out the example of the Jersey tutorial which concerns <code>AsyncResponse</code> and can be found here: <a href="http://jersey.java.net/apidocs/snapshot/jersey/javax/ws/rs/container/AsyncResponse.html" rel="nofollow">http://jersey.java.net/apidocs/snapshot/jersey/javax/ws/rs/container/AsyncResponse.html</a></p> <p>It does not seem to work. Even the example throws an exception when executed in a simple unit test:</p> <pre><code>public class AsyncTest extends JerseyTest { @Override protected Application configure() { return new ResourceConfig(MyAsync.class) } @Path("/async") public static class MyAsync { @GET public void asyncGet(@Suspended final AsyncResponse asyncResponse) { new Thread(new Runnable() { @Override public void run() { String result = veryExpensiveOperation(); asyncResponse.resume(result); } private String veryExpensiveOperation() { return "bla"; } }).start(); } } @Test public void testConvertWordToPdf() throws Exception { String result = target().path("async").request().async().get().get(String.class); } } </code></pre> <p>Can somebody tell me what I am doing wrong? Thanks for any answer!</p> <p><strong>Update</strong>: I even tried the official example that can be found at <a href="http://search.maven.org/#artifactdetails|org.glassfish.jersey.examples|server-async-standalone-webapp|2.1|war" rel="nofollow">http://search.maven.org/#artifactdetails|org.glassfish.jersey.examples|server-async-standalone-webapp|2.1|war</a> and I get the same exception. The example works, if I make sure the <code>AsyncResponse</code> responds before the method returns. The stack trace I get:</p> <blockquote> <p>java.util.concurrent.ExecutionException: javax.ws.rs.ProcessingException: java.lang.NullPointerException at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:306) at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:293) at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116) at MyCompany.jersey.ConverterResourceTest.testTest(MyClass.java:20) 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.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84) at org.testng.internal.Invoker.invokeMethod(Invoker.java:714) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111) at org.testng.TestRunner.privateRun(TestRunner.java:767) at org.testng.TestRunner.run(TestRunner.java:617) at org.testng.SuiteRunner.runTest(SuiteRunner.java:334) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291) at org.testng.SuiteRunner.run(SuiteRunner.java:240) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224) at org.testng.TestNG.runSuitesLocally(TestNG.java:1149) at org.testng.TestNG.run(TestNG.java:1057) at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111) at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204) at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175) at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:111) Caused by: javax.ws.rs.ProcessingException: java.lang.NullPointerException at org.glassfish.jersey.client.ClientRuntime$1$1.failure(ClientRuntime.java:148) at org.glassfish.jersey.test.inmemory.internal.InMemoryConnector$3.run(InMemoryConnector.java:265) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:293) at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:49) at org.glassfish.jersey.test.inmemory.internal.InMemoryConnector.apply(InMemoryConnector.java:257) at org.glassfish.jersey.client.ClientRuntime$1.run(ClientRuntime.java:156) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) at org.glassfish.jersey.internal.Errors.process(Errors.java:315) at org.glassfish.jersey.internal.Errors.process(Errors.java:297) at org.glassfish.jersey.internal.Errors.process(Errors.java:267) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:322) at org.glassfish.jersey.client.ClientRuntime$2.run(ClientRuntime.java:170) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException at org.glassfish.jersey.internal.util.KeyComparatorHashMap.putAll(KeyComparatorHashMap.java:509) at javax.ws.rs.core.AbstractMultivaluedMap.putAll(AbstractMultivaluedMap.java:332) at org.glassfish.jersey.test.inmemory.internal.InMemoryConnector.createClientResponse(InMemoryConnector.java:286) at org.glassfish.jersey.test.inmemory.internal.InMemoryConnector.apply(InMemoryConnector.java:247) at org.glassfish.jersey.test.inmemory.internal.InMemoryConnector$3.run(InMemoryConnector.java:261) ... 20 more</p> </blockquote>
 

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