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当我使用 grizzly2 运行测试时，请按照此处的步骤操作。一切正常。然后我尝试了 jersey-test-framework-provider-jetty，异常发生：

  MessageBodyReader not found for media type=text/html;charset=iso-8859-1, type=class com.example.resource.GenericPair, genericType=com.example.resource.GenericPair<java.lang.Integer, java.lang.String>.
  HTTP 500 Server Error.

回应是：

<head>
<meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1"/>
<title>Error 500 </title>
</head>
<body>
<h2>HTTP ERROR: 500</h2>
<p>Problem accessing /test. Reason:
<pre>    java.lang.NoSuchMethodError: org.eclipse.jetty.server.Response.getResponse(Ljavax/servlet/http/HttpServletResponse;)Lorg/eclipse/jetty/server/Response;</pre></p>
<hr /><a href="http://eclipse.org/jetty">Powered by Jetty:// 9.3.10.v20160621</a><hr/>
</body>
</html>

可能需要使用码头进行更多配置。这是我的配置

@Override
protected Application configure() {
    return new ResourceConfig(TestApi.class)
            .register(JacksonFeature.class)
            .register(JacksonJsonProvider.class)
            .packages("com.example.api");
}

更新

-----pom.xml---------

    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-server</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-client</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.core</groupId>
            <artifactId>jersey-common</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet-core</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.7.5</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.jaxrs</groupId>
            <artifactId>jackson-jaxrs-json-provider</artifactId>
            <version>2.7.4</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-json-jackson</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-servlet</artifactId>
            <version>${jetty.version}</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-server</artifactId>
            <version>${jetty.version}</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>jetty-util</artifactId>
            <version>${jetty.version}</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jersey.test-framework.providers</groupId>
            <artifactId>jersey-test-framework-provider-jetty</artifactId>
            <version>${jersey.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <properties>
        <jersey.version>2.23.1</jersey.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <jetty.version>9.3.10.v20160621</jetty.version>
    </properties>

--------TestApiTest.java--------

public class TestApiTest extends JerseyTest {

    @Override
    protected Application configure() {
        return new ResourceConfig(TestApi.class)
                .register(JacksonFeature.class)
                .register(JacksonJsonProvider.class)
                .packages("com.example.api");
    }

    @Override
    protected URI getBaseUri() {
        return URI.create(super.getBaseUri().toString() + "");
    }

    @Override
    protected void configureClient(ClientConfig config) {
        super.configureClient(config);
    }

    @Test
    public void testIndex() throws Exception {
        Response response = target().path("test").request().get();
        String responseMsg = response.readEntity(String.class);
        assertEquals("this is test api", responseMsg);
    }

    @Test
    public void testList() throws Exception {
        Response response = target().path("test/list").request().get();
        List<Pair> pairs = response.readEntity(new GenericType<List<Pair>>(){});//从response中读取泛型集合
        assertEquals(3, pairs.size());
    }
}

------------ApiTest.java------------

@Path("test")
public class TestApi {
    @GET
    @Produces(MediaType.TEXT_PLAIN)
    public String index() {
        System.out.println("-------------");
        return "this is test api";
    }

    @GET
    @Path("/list")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Pair> list() {
        List<Pair> pairs = new ArrayList<Pair>();
        pairs.add(new Pair(1, "pair1"));
        pairs.add(new Pair(2, "pair2"));
        pairs.add(new Pair(3, "pair3"));
        return pairs;
    }
}
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