Java代码
public class SimpleMessageConverter implements MessageConverter {
public Message toMessage(Object object, Session session) throws JMSException, MessageConversionException {
if (object instanceof Message) {
return (Message) object;
}
else if (object instanceof String) {
return createMessageForString((String) object, session);
}
else if (object instanceof byte[]) {
return createMessageForByteArray((byte[]) object, session);
}
else if (object instanceof Map) {
return createMessageForMap((Map) object, session);
}
else if (object instanceof Serializable) {
return createMessageForSerializable(((Serializable) object), session);
}
else {
throw new MessageConversionException("Cannot convert object of type [" +
ObjectUtils.nullSafeClassName(object) + "] to JMS message. Supported message " +
"payloads are: String, byte array, Map<String,?>, Serializable object.");
}
}
public Object fromMessage(Message message) throws JMSException, MessageConversionException {
if (message instanceof TextMessage) {
return extractStringFromMessage((TextMessage) message);
}
else if (message instanceof BytesMessage) {
return extractByteArrayFromMessage((BytesMessage) message);
}
else if (message instanceof MapMessage) {
return extractMapFromMessage((MapMessage) message);
}
else if (message instanceof ObjectMessage) {
return extractSerializableFromMessage((ObjectMessage) message);
}
else {
return message;
}
}
protected TextMessage createMessageForString(String text, Session session) throws JMSException {
return session.createTextMessage(text);
}
protected BytesMessage createMessageForByteArray(byte[] bytes, Session session) throws JMSException {
BytesMessage message = session.createBytesMessage();
message.writeBytes(bytes);
return message;
}
protected MapMessage createMessageForMap(Map<?, ?> map, Session session) throws JMSException {
MapMessage message = session.createMapMessage();
for (Map.Entry entry : map.entrySet()) {
if (!(entry.getKey() instanceof String)) {
throw new MessageConversionException("Cannot convert non-String key of type [" +
ObjectUtils.nullSafeClassName(entry.getKey()) + "] to JMS MapMessage entry");
}
message.setObject((String) entry.getKey(), entry.getValue());
}
return message;
}
protected ObjectMessage createMessageForSerializable(Serializable object, Session session) throws JMSException {
return session.createObjectMessage(object);
}
protected String extractStringFromMessage(TextMessage message) throws JMSException {
return message.getText();
}
protected byte[] extractByteArrayFromMessage(BytesMessage message) throws JMSException {
byte[] bytes = new byte[(int) message.getBodyLength()];
message.readBytes(bytes);
return bytes;
}
protected Map extractMapFromMessage(MapMessage message) throws JMSException {
Map<String, Object> map = new HashMap<String, Object>();
Enumeration en = message.getMapNames();
while (en.hasMoreElements()) {
String key = (String) en.nextElement();
map.put(key, message.getObject(key));
}
return map;
}
protected Serializable extractSerializableFromMessage(ObjectMessage message) throws JMSException {
return message.getObject();
}
}
转载自
http://elim.iteye.com/blog/1900937
来源: http://www.bubuko.com/infodetail-2022580.html