org.springframework.integration.json
Class ObjectToJsonTransformer

java.lang.Object
  org.springframework.integration.context.IntegrationObjectSupport
      org.springframework.integration.transformer.AbstractTransformer
          org.springframework.integration.json.ObjectToJsonTransformer

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.InitializingBean, org.springframework.context.ApplicationContextAware, NamedComponent, Transformer

public class ObjectToJsonTransformer
extends AbstractTransformer

Transformer implementation that converts a payload instance into a JSON string representation. By default this transformer uses JacksonJsonObjectMapperProvider factory to get an instance of a Jackson or Jackson 2 JSON-processor JsonObjectMapper implementation depending on the jackson-databind or jackson-mapper-asl libs on the classpath. Any other JsonObjectMapper implementation can be provided.

Since:

2.0

Author:

Mark Fisher, James Carr, Oleg Zhurakousky, Gary Russell, Artem Bilan

Field Summary

static java.lang.String

JSON_CONTENT_TYPE

Fields inherited from class org.springframework.integration.context.IntegrationObjectSupport

logger

Constructor Summary

ObjectToJsonTransformer()

ObjectToJsonTransformer(JsonObjectMapper<?> jsonObjectMapper)

ObjectToJsonTransformer(java.lang.Object objectMapper)
Deprecated. in favor of ObjectToJsonTransformer(JsonObjectMapper)

Method Summary

protected java.lang.Object	doTransform(Message<?> message) Subclasses must implement this method to provide the transformation logic.
void	setContentType(java.lang.String contentType) Sets the content-type header value

Methods inherited from class org.springframework.integration.transformer.AbstractTransformer

transform

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, getApplicationContextId, getBeanFactory, getComponentName, getComponentType, getConversionService, getTaskScheduler, onInit, setApplicationContext, setBeanFactory, setBeanName, setComponentName, setConversionService, setTaskScheduler, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

JSON_CONTENT_TYPE

public static final java.lang.String JSON_CONTENT_TYPE

See Also:

Constant Field Values

Constructor Detail

ObjectToJsonTransformer

@Deprecated
public ObjectToJsonTransformer(java.lang.Object objectMapper)

Deprecated. in favor of ObjectToJsonTransformer(JsonObjectMapper)

Backward compatibility - allows existing configurations using Jackson 1.x to inject an ObjectMapper directly.

ObjectToJsonTransformer

public ObjectToJsonTransformer(JsonObjectMapper<?> jsonObjectMapper)

ObjectToJsonTransformer

public ObjectToJsonTransformer()

Method Detail

setContentType

public void setContentType(java.lang.String contentType)

Sets the content-type header value

Parameters:

contentType -

doTransform

protected java.lang.Object doTransform(Message<?> message)
                                throws java.lang.Exception

Description copied from class: AbstractTransformer

Subclasses must implement this method to provide the transformation logic. If the return value is itself a Message, it will be used as the result. Otherwise, any non-null return value will be used as the payload of the result Message.

Specified by:

doTransform in class AbstractTransformer

Throws:

java.lang.Exception