Example usage for org.springframework.messaging.converter MessageConversionException MessageConversionException

Introduction

In this page you can find the example usage for org.springframework.messaging.converter MessageConversionException MessageConversionException.

Prototype

public MessageConversionException(String description) 

Source Link

Usage

From source file:org.eclipse.hawkbit.event.BusProtoStuffMessageConverter.java

private static void checkIfHeaderMutable(final MessageHeaders headers) {
    if (isAccessorMutable(headers) || headers instanceof MutableMessageHeaders) {
        return;/*  w w  w.  j a  v  a  2 s  . c  om*/
    }
    LOG.error("Protostuff cannot set serializae class because message header is not mutable");
    throw new MessageConversionException(
            "Cannot set the serialize class to message header. Need Mutable message header");
}

---

From source file:org.springframework.cloud.stream.app.tensorflow.processor.TensorflowCommonProcessorConfiguration.java

@Bean
//@RefreshScope/*from www .j  a v  a2  s.c om*/
@ConditionalOnMissingBean(name = "tensorflowInputConverter")
@SuppressWarnings("unchecked")
public TensorflowInputConverter tensorflowInputConverter() {
    return (input, processorContext) -> {

        if (input instanceof Map) {
            return (Map<String, Object>) input;
        } else if (input instanceof Tuple) {
            Tuple tuple = (Tuple) input;
            Map<String, Object> map = new LinkedHashMap<>(tuple.size());
            for (int i = 0; i < tuple.size(); i++) {
                map.put(tuple.getFieldNames().get(i), tuple.getValue(i));
            }
            return map;
        }

        throw new MessageConversionException("Unsupported input format: " + input);
    };
}

---

From source file:org.springframework.messaging.core.AbstractMessageSendingTemplate.java

/**
 * Convert the given Object to serialized form, possibly using a
 * {@link MessageConverter}, wrap it as a message with the given
 * headers and apply the given post processor.
 * @param payload the Object to use as payload
 * @param headers headers for the message to send
 * @param postProcessor the post processor to apply to the message
 * @return the converted message//  w  w w . ja  va2 s  .co m
 */
protected Message<?> doConvert(Object payload, @Nullable Map<String, Object> headers,
        @Nullable MessagePostProcessor postProcessor) {

    MessageHeaders messageHeaders = null;
    Object conversionHint = (headers != null ? headers.get(CONVERSION_HINT_HEADER) : null);

    Map<String, Object> headersToUse = processHeadersToSend(headers);
    if (headersToUse != null) {
        if (headersToUse instanceof MessageHeaders) {
            messageHeaders = (MessageHeaders) headersToUse;
        } else {
            messageHeaders = new MessageHeaders(headersToUse);
        }
    }

    MessageConverter converter = getMessageConverter();
    Message<?> message = (converter instanceof SmartMessageConverter
            ? ((SmartMessageConverter) converter).toMessage(payload, messageHeaders, conversionHint)
            : converter.toMessage(payload, messageHeaders));
    if (message == null) {
        String payloadType = payload.getClass().getName();
        Object contentType = (messageHeaders != null ? messageHeaders.get(MessageHeaders.CONTENT_TYPE) : null);
        throw new MessageConversionException("Unable to convert payload with type='" + payloadType
                + "', contentType='" + contentType + "', converter=[" + getMessageConverter() + "]");
    }
    if (postProcessor != null) {
        message = postProcessor.postProcessMessage(message);
    }
    return message;
}

---

From source file:org.springframework.messaging.simp.stomp.DefaultStompSession.java

@SuppressWarnings("unchecked")
private Message<byte[]> createMessage(StompHeaderAccessor accessor, @Nullable Object payload) {
    accessor.updateSimpMessageHeadersFromStompHeaders();
    Message<byte[]> message;
    if (payload == null) {
        message = MessageBuilder.createMessage(EMPTY_PAYLOAD, accessor.getMessageHeaders());
    } else if (payload instanceof byte[]) {
        message = MessageBuilder.createMessage((byte[]) payload, accessor.getMessageHeaders());
    } else {//from  w  ww  .j av a  2  s.  c om
        message = (Message<byte[]>) getMessageConverter().toMessage(payload, accessor.getMessageHeaders());
        accessor.updateStompHeadersFromSimpMessageHeaders();
        if (message == null) {
            throw new MessageConversionException(
                    "Unable to convert payload with type='" + payload.getClass().getName() + "', contentType='"
                            + accessor.getContentType() + "', converter=[" + getMessageConverter() + "]");
        }
    }
    return message;
}

---

From source file:org.springframework.messaging.simp.stomp.DefaultStompSession.java

private void invokeHandler(StompFrameHandler handler, Message<byte[]> message, StompHeaders stompHeaders) {
    if (message.getPayload().length == 0) {
        handler.handleFrame(stompHeaders, null);
        return;//from www  . ja  v a  2 s .co m
    }
    Type payloadType = handler.getPayloadType(stompHeaders);
    Class<?> resolvedType = ResolvableType.forType(payloadType).resolve();
    if (resolvedType == null) {
        throw new MessageConversionException("Unresolvable payload type [" + payloadType
                + "] from handler type [" + handler.getClass() + "]");
    }
    Object object = getMessageConverter().fromMessage(message, resolvedType);
    if (object == null) {
        throw new MessageConversionException("No suitable converter for payload type [" + payloadType
                + "] from handler type [" + handler.getClass() + "]");
    }
    handler.handleFrame(stompHeaders, object);
}

---