Module java.net.http

Package java.net.http

Interface HttpResponse<T>

Type Parameters:

T - the response body type

public interface HttpResponse<T>

An HTTP response.

An HttpResponse is not created directly, but rather returned as a result of sending an HttpRequest. An HttpResponse is made available when the response status code and headers have been received, and typically after the response body has also been completely received. Whether or not the HttpResponse is made available before the response body has been completely received depends on the BodyHandler provided when sending the HttpRequest.

This class provides methods for accessing the response status code, headers, the response body, and the HttpRequest corresponding to this response.

The following is an example of retrieving a response as a String:

HttpResponse<String> response = client
  .send(request, BodyHandlers.ofString());

The class BodyHandlers provides implementations of many common response handlers. Alternatively, a custom BodyHandler implementation can be used.

Since:

11

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	HttpResponse.BodyHandler<T>	A handler for response bodies.
static class	HttpResponse.BodyHandlers	Implementations of BodyHandler that implement various useful handlers, such as handling the response body as a String, or streaming the response body to a file.
static interface	HttpResponse.BodySubscriber<T>	A BodySubscriber consumes response body bytes and converts them into a higher-level Java type.
static class	HttpResponse.BodySubscribers	Implementations of BodySubscriber that implement various useful subscribers, such as converting the response body bytes into a String, or streaming the bytes to a file.
static interface	HttpResponse.PushPromiseHandler<T>	A handler for push promises.
static interface	HttpResponse.ResponseInfo	Initial response information supplied to a BodyHandler when a response is initially received and before the body is processed.

Method Summary

Modifier and Type	Method	Description
T	body()	Returns the body.
HttpHeaders	headers()	Returns the received response headers.
Optional<HttpResponse<T>>	previousResponse()	Returns an Optional containing the previous intermediate response if one was received.
HttpRequest	request()	Returns the HttpRequest corresponding to this response.
Optional<SSLSession>	sslSession()	Returns an Optional containing the SSLSession in effect for this response.
int	statusCode()	Returns the status code for this response.
URI	uri()	Returns the URI that the response was received from.
HttpClient.Version	version()	Returns the HTTP protocol version that was used for this response.

Method Details

statusCode

int statusCode()

Returns the status code for this response.

Returns:

the response code

request

HttpRequest request()

Returns the HttpRequest corresponding to this response.

The returned HttpRequest may not be the initiating request provided when sending. For example, if the initiating request was redirected, then the request returned by this method will have the redirected URI, which will be different from the initiating request URI.

Returns:

the request

See Also:

• previousResponse()

previousResponse

Optional<HttpResponse<T>> previousResponse()

Returns an Optional containing the previous intermediate response if one was received. An intermediate response is one that is received as a result of redirection or authentication. If no previous response was received then an empty Optional is returned.

Returns:

an Optional containing the HttpResponse, if any.

headers

HttpHeaders headers()

Returns the received response headers.

Returns:

the response headers

body

T body()

Returns the body. Depending on the type of T, the returned body may represent the body after it was read (such as byte[], or String, or Path) or it may represent an object with which the body is read, such as an InputStream.

If this HttpResponse was returned from an invocation of previousResponse() then this method returns null

Returns:

the body

sslSession

Optional<SSLSession> sslSession()

Returns an Optional containing the SSLSession in effect for this response. Returns an empty Optional if this is not a HTTPS response.

Returns:

an Optional containing the SSLSession associated with the response

uri

URI uri()

Returns the URI that the response was received from. This may be different from the request URI if redirection occurred.

Returns:

the URI of the response

version

HttpClient.Version version()

Returns the HTTP protocol version that was used for this response.

Returns:

HTTP protocol version