Package org.springframework.http.client

Interface ClientHttpRequestInterceptor

All Known Implementing Classes:

BasicAuthenticationInterceptor

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 ClientHttpRequestInterceptor

Contract to intercept client-side HTTP requests. Implementations can be registered with RestClient or RestTemplate to modify the outgoing request and/or the incoming response.

Since:

3.1

Author:

Arjen Poutsma

Method Summary

Modifier and Type	Method	Description
ClientHttpResponse	intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)	Intercept the given request, and return a response.

Method Details

intercept

ClientHttpResponse intercept(HttpRequest request,
 byte[] body,
 ClientHttpRequestExecution execution)
                      throws IOException

Intercept the given request, and return a response. The given ClientHttpRequestExecution allows the interceptor to pass on the request and response to the next entity in the chain.

A typical implementation of this method would follow the following pattern:

1. Examine the request and body.
2. Optionally wrap the request to filter HTTP attributes.
3. Optionally modify the body of the request.
• either execute the request using ClientHttpRequestExecution.execute(HttpRequest, byte[])
• or do not execute the request to block the execution altogether
4. Optionally wrap the response to filter HTTP attributes.

Note: if the interceptor throws an exception after receiving a response, it must close the response via ClientHttpResponse.close().

Parameters:

request - the request, containing method, URI, and headers

body - the body of the request

execution - the request execution

Returns:

the response

Throws:

IOException - in case of I/O errors