问题描述
我使用jms / atmosphere框架在两个应用程序之间进行通信。
其中一个应用程序是一个主题的消息生产者,发送以下类型的自定义对象:
I am using the jms/atmosphere framework to make communication between two applications.One of the applications is a message producer for a topic, sending custom objects of the following type:
@XmlRootElement
public class A implements Serializable{
public A(){}
/* some private properties */
}
另一方面,不止一个消费者正在倾听该话题,并根据id做出不同的订阅。
On the other side more than one consumers are listening on the topic and make different subscriptions depending on the id.
@GET
@Produces({MediaType.APPLICATION_JSON})
public SuspendResponse<A> subscribe() {
return new SuspendResponse.SuspendResponseBuilder<A>()
.broadcaster(topic)
.outputComments(true)
.addListener(new EventsLogger()).build();
}
@Override
public void incomingBroadcast() {
try {
String id = getID();
if (id.startsWith("/*")) {
id = "atmosphere";
}
logger.info("Looking up Connection Factory {}", FACTORY_NAME);
Context ctx = new InitialContext();
ConnectionFactory connectionFactory = (ConnectionFactory) ctx.lookup(FACTORY_NAME);
logger.info("Looking up topic: {}", TOPIC_NAME);
Topic topic = (Topic) ctx.lookup(TOPIC_NAME);
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
logger.info("Create consumer for : {}", id);
String selector = String.format("BroadcasterId = '%s'", id);
consumer = session.createConsumer(topic, selector);
consumer.setMessageListener(new MessageListener() {
@Override
public void onMessage(Message msg) {
try {
ObjectMessage om = (ObjectMessage) msg;
A a = (A) om.getObject();
if (a!= null && bc != null) {
broadcastReceivedMessage(a);
}
logger.info("Broadcasted message: {} ", a);
} catch (JMSException ex) {
logger.warn("Failed to broadcast message", ex);
}
}
});
publisher = session.createProducer(topic);
connection.start();
logger.info("JMS created for topic {}, with filter {}", TOPIC_NAME, selector);
} catch (Throwable ex) {
throw new IllegalStateException("Unable to initialize MyBroadcaster", ex);
}
}
我注意到的是,正确地到达JMS主题,但我收到以下异常:
What I notice is that the messages are arriving correctly on the JMS topic, but I receive the following exception:
SEVERE: A message body writer for Java class A, and Java type class A, and MIME
media type text/html was not found
SEVERE: The registered message body writers compatible with the MIME media type are:
*/* ->
com.sun.jersey.core.impl.provider.entity.FormProvider
com.sun.jersey.core.impl.provider.entity.MimeMultipartProvider
com.sun.jersey.core.impl.provider.entity.StringProvider
com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
com.sun.jersey.core.impl.provider.entity.FileProvider
com.sun.jersey.core.impl.provider.entity.InputStreamProvider
com.sun.jersey.core.impl.provider.entity.DataSourceProvider
com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General
com.sun.jersey.core.impl.provider.entity.ReaderProvider
com.sun.jersey.core.impl.provider.entity.DocumentProvider
com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider
com.sun.jersey.core.impl.provider.entity.SourceProvider$SourceWriter
com.sun.jersey.json.impl.provider.entity.JSONJAXBElementProvider$General
com.sun.jersey.json.impl.provider.entity.JSONArrayProvider$General
com.sun.jersey.json.impl.provider.entity.JSONObjectProvider$General
com.sun.jersey.json.impl.provider.entity.JSONWithPaddingProvider
com.sun.jersey.server.impl.template.ViewableMessageBodyWriter
com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General
com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General
com.sun.jersey.json.impl.provider.entity.JSONRootElementProvider$General
com.sun.jersey.json.impl.provider.entity.JSONListElementProvider$General
com.sun.jersey.json.impl.provider.entity.JacksonProviderProxy
com.sun.jersey.moxy.MoxyMessageBodyWorker
com.sun.jersey.moxy.MoxyListMessageBodyWorker
我使用的是Netbeans 7.0.1,glassfish 3.1.1,大气0.8.1,球衣1.11。我在网上搜索了一个可能的解决方案,但没有任何帮助。
I am using Netbeans 7.0.1, glassfish 3.1.1, atmosphere 0.8.1, jersey 1.11. I searched the web an tried any possible solution but nothing helped.
推荐答案
我有同样的问题,并且没有将Jersey的json模块包含在我的类路径中。您可以简单地通过在maven中添加以下依赖项来修复它:
I had the same issue and it was down to not having Jersey's json module included on my classpath. You can simply fix it by adding the following dependency on maven
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>1.14</version>
</dependency>
这篇关于未找到Java类...和MIME媒体类型text / html的消息正文编写器的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!