Question

我有一个REST api，它以json格式返回一个对象，Content-Type为application/json，非常标准。

我正在使用Jersey的测试框架创建一个基本的TestNg Jersey测试，并希望针对在Tomcat中独立部署的外部容器运行一个简单的测试。

对于不需要读取响应实体的测试，但是那些确实失败的测试，设置似乎没问题：

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)

我正在配置测试：

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);
    }

    ...

}

在指定的行，它以response.readEntity(Status.class);失败。

这是一个Maven项目，这些是相关的依赖项：

  <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>

我正在尝试阅读的com.test.Status类具有JAX-RS所需的空构造函数。

任何人都知道为什么测试会像这样失败？如你所见，我正在使用Jersey 2.x。

非常感谢任何帮助！

谢谢！

Answer 1

我发现了问题..我实际上错过了这种依赖：

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

现在工作正常。

非常感谢大家！

Answer 2

您是否检查过REST API是否正确返回了json字符串？可能正在使用curl命令？

如果没有，请检查服务器配置。您需要在web.xml中启用POJOMappingFeature。

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

在读取实体时，找不到MessageBodyReader，Jersey测试会一直失败？

2 个答案: