Jersey test keeps failing with MessageBodyReader not found when reading entity?

Question

I have a REST api that returns an object in json format, with Content-Type of application/json, pretty standard.

I'm creating a basic TestNg Jersey test using Jersey's test framework, and want to run a simple test against an external container deployed independently in Tomcat.

The setup seems OK for tests that don't need to read the entity of a response, but those that do fail with:

org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyReader not found for media type=application/json, type=class com.test.Status, genericType=class com.specktro.orchid.rest.api.Status.
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:225)
    at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:149)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1124)
    at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:851)
    at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:783)
    at org.glassfish.jersey.client.ClientResponse.readEntity(ClientResponse.java:326)
    at org.glassfish.jersey.client.InboundJaxrsResponse$1.call(InboundJaxrsResponse.java:111)
    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:228)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:399)
    at org.glassfish.jersey.client.InboundJaxrsResponse.readEntity(InboundJaxrsResponse.java:108)
    at com.specktro.orchid.rest.api.tests.CoreTest.test(CoreTest.java:81)
    at com.specktro.orchid.rest.api.tests.CoreTest.second(CoreTest.java:46)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    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.access$000(SuiteRunner.java:37)
    at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:368)
    at org.testng.internal.thread.ThreadUtil$2.call(ThreadUtil.java:64)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

I'm configuring the test like so:

public class CoreTest extends ContainerPerClassTest {

    @Override
    public TestContainerFactory getTestContainerFactory() {
        return new ExternalTestContainerFactory();
    }

    @Override
    protected Application configure() {
        return new ResourceConfig();
    }

    @Test
    private void test() {
        final Response response = target("/status").request()
                .accept(MediaType.APPLICATION_JSON).get();

        Assert.assertEquals(response.getStatus(), 200);

        // FAILS HERE
        Status status = response.readEntity(Status.class);
    }

    ...

}

At the indicated line it fails with response.readEntity(Status.class);.

This is a Maven project, and these are the relevant dependencies:

  <dependencies>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.4.1.1</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.jaxrs</groupId>
      <artifactId>jackson-jaxrs-json-provider</artifactId>
      <version>2.4.1</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jersey.containers</groupId>
      <artifactId>jersey-container-servlet</artifactId>
      <version>2.9.1</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-server</artifactId>
      <version>2.9.1</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-common</artifactId>
      <version>2.9.1</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish.jersey.test-framework</groupId>
        <artifactId>jersey-test-framework-core</artifactId>
        <version>2.10.1</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.test-framework.providers</groupId>
        <artifactId>jersey-test-framework-provider-bundle</artifactId>
        <version>2.10.1</version>
        <type>pom</type>
        <scope>test</scope>
    </dependency>
    <dependency> 
        <groupId>org.testng</groupId>
        <artifactId>testng</artifactId>
        <version>6.8.8</version>
        <scope>test</scope>
    </dependency>

  </dependencies>

The com.test.Status class I'm trying to read has an empty constructor as required by JAX-RS.

Anyone knows why the test would fail like this? As you can see I'm using Jersey 2.x.

Any help is greatly appreciated!

Thanks!

For our FTA tests we get the entity as a string and then use a JSON parser to marshal into the object. — David W, Jul 22 '14 at 23:43

score 6 · Accepted Answer · answered Jul 23 '14 at 14:56

6

I found the issue.. I was actually missing this dependency:

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>${jersey.version}</version>
</dependency>

Now it works fine.

Thanks anyways everyone!

answered Jul 23 '14 at 14:56

Edy Bourne

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This introduces version conflicts for me. The `jersey-media-json-jackson` artifact is out of date with the rest of jackson (it's using 2.3.2.) – 2rs2ts Oct 14 '14 at 18:33

score 1 · Answer 2 · answered Jul 23 '14 at 06:52

Have you checked if the REST API is returning the json string correctly? May be using a curl command?

If not, please check the server configuration. You need to enable POJOMappingFeature in web.xml.

<init-param>
    <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
    <param-value>true</param-value>
</init-param>

Jersey test keeps failing with MessageBodyReader not found when reading entity?

2 Answers2