org.springframework.web.client

Interface ResponseExtractor<T>

All Known Implementing Classes:

HttpMessageConverterExtractor

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ResponseExtractor<T>

Generic callback interface used by RestTemplate's retrieval methods Implementations of this interface perform the actual work of extracting data from a ClientHttpResponse, but don't need to worry about exception handling or closing resources.

Used internally by the RestTemplate, but also useful for application code.

Since:

3.0

Author:

Arjen Poutsma

See Also:

RestTemplate.execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.RequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...)

Method Summary

Modifier and Type	Method and Description
T	extractData(ClientHttpResponse response) Extract data from the given ClientHttpResponse and return it.

Method Detail

extractData

@Nullable
T extractData(ClientHttpResponse response)
                 throws java.io.IOException

Extract data from the given ClientHttpResponse and return it.

Parameters:

response - the HTTP response

Returns:

the extracted data

Throws:

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