org.springframework.web.client
Class HttpMessageConverterExtractor<T>

java.lang.Object
  org.springframework.web.client.HttpMessageConverterExtractor<T>

All Implemented Interfaces:

ResponseExtractor<T>

public class HttpMessageConverterExtractor<T>
extends java.lang.Object
implements ResponseExtractor<T>

Response extractor that uses the given entity converters to convert the response into a type T.

Since:

3.0

Author:

Arjen Poutsma

See Also:

RestTemplate

Field Summary

private Log	logger
private java.util.List<HttpMessageConverter<?>>	messageConverters
private java.lang.Class<T>	responseType

Constructor Summary

HttpMessageConverterExtractor(java.lang.Class<T> responseType, java.util.List<HttpMessageConverter<?>> messageConverters)
Creates a new instance of the HttpMessageConverterExtractor with the given response type and message converters.

HttpMessageConverterExtractor(java.lang.Class<T> responseType, java.util.List<HttpMessageConverter<?>> messageConverters, Log logger)

Method Summary

T	extractData(ClientHttpResponse response) Extract data from the given ClientHttpResponse and return it.
protected boolean	hasMessageBody(ClientHttpResponse response) Indicates whether the given response has a message body.

Methods inherited from class java.lang.Object

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

Field Detail

responseType

private final java.lang.Class<T> responseType

messageConverters

private final java.util.List<HttpMessageConverter<?>> messageConverters

logger

private final Log logger

Constructor Detail

HttpMessageConverterExtractor

public HttpMessageConverterExtractor(java.lang.Class<T> responseType,
                                     java.util.List<HttpMessageConverter<?>> messageConverters)

Creates a new instance of the HttpMessageConverterExtractor with the given response type and message converters. The given converters must support the response type.

HttpMessageConverterExtractor

HttpMessageConverterExtractor(java.lang.Class<T> responseType,
                              java.util.List<HttpMessageConverter<?>> messageConverters,
                              Log logger)

Method Detail

extractData

public T extractData(ClientHttpResponse response)
              throws java.io.IOException

Description copied from interface: ResponseExtractor

Extract data from the given ClientHttpResponse and return it.

Specified by:

extractData in interface ResponseExtractor<T>

Parameters:

response - the HTTP response

Returns:

the extracted data

Throws:

java.io.IOException - in case of I/O errors

hasMessageBody

protected boolean hasMessageBody(ClientHttpResponse response)
                          throws java.io.IOException

Indicates whether the given response has a message body.

Default implementation returns false for a response status of 204 or 304, or a Content-Length of 0.

Parameters:

response - the response to check for a message body

Returns:

true if the response has a body, false otherwise

Throws:

java.io.IOException - in case of I/O errors