Package org.springframework.web.client

Interface RestClient

public interface RestClient

Client to perform HTTP requests, exposing a fluent, synchronous API over underlying HTTP client libraries such as the JDK HttpClient, Apache HttpComponents, and others.

Use static factory methods create(), create(String), or builder() to prepare an instance. To use the same configuration as a RestTemplate, use create(RestTemplate) or builder(RestTemplate).

For examples with a response body see:

• retrieve()
• exchange(Function<ClientHttpRequest, T>)

For examples with a request body see:

• body(Object)
• body(Object, ParameterizedTypeReference)
• body(Consumer<OutputStream>)

Since:

6.1

Author:

Arjen Poutsma

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	RestClient.Builder	A mutable builder for creating a RestClient.
static interface	RestClient.RequestBodySpec	Contract for specifying request headers and body leading up to the exchange.
static interface	RestClient.RequestBodyUriSpec	Contract for specifying request headers, body and URI for a request.
static interface	RestClient.RequestHeadersSpec<S extends RestClient.RequestHeadersSpec<S>>	Contract for specifying request headers leading up to the exchange.
static interface	RestClient.RequestHeadersUriSpec<S extends RestClient.RequestHeadersSpec<S>>	Contract for specifying request headers and URI for a request.
static interface	RestClient.ResponseSpec	Contract for specifying response operations following the exchange.
static interface	RestClient.UriSpec<S extends RestClient.RequestHeadersSpec<?>>	Contract for specifying the URI for a request.

Method Summary

Modifier and Type	Method	Description
static RestClient.Builder	builder()	Obtain a RestClient builder.
static RestClient.Builder	builder(RestTemplate restTemplate)	Obtain a RestClient builder based on the configuration of the given RestTemplate.
static RestClient	create()	Create a new RestClient.
static RestClient	create(String baseUrl)	Variant of create() that accepts a default base URL.
static RestClient	create(RestTemplate restTemplate)	Create a new RestClient based on the configuration of the given RestTemplate.
RestClient.RequestHeadersUriSpec<?>	delete()	Start building an HTTP DELETE request.
RestClient.RequestHeadersUriSpec<?>	get()	Start building an HTTP GET request.
RestClient.RequestHeadersUriSpec<?>	head()	Start building an HTTP HEAD request.
RestClient.RequestBodyUriSpec	method(HttpMethod method)	Start building a request for the given HttpMethod.
RestClient.Builder	mutate()	Return a builder to create a new RestClient whose settings are replicated from the current RestClient.
RestClient.RequestHeadersUriSpec<?>	options()	Start building an HTTP OPTIONS request.
RestClient.RequestBodyUriSpec	patch()	Start building an HTTP PATCH request.
RestClient.RequestBodyUriSpec	post()	Start building an HTTP POST request.
RestClient.RequestBodyUriSpec	put()	Start building an HTTP PUT request.

Method Details

get

RestClient.RequestHeadersUriSpec<?> get()

Start building an HTTP GET request.

Returns:

a spec for specifying the target URL

head

RestClient.RequestHeadersUriSpec<?> head()

Start building an HTTP HEAD request.

Returns:

a spec for specifying the target URL

post

RestClient.RequestBodyUriSpec post()

Start building an HTTP POST request.

Returns:

a spec for specifying the target URL

put

RestClient.RequestBodyUriSpec put()

Start building an HTTP PUT request.

Returns:

a spec for specifying the target URL

patch

RestClient.RequestBodyUriSpec patch()

Start building an HTTP PATCH request.

Returns:

a spec for specifying the target URL

delete

RestClient.RequestHeadersUriSpec<?> delete()

Start building an HTTP DELETE request.

Returns:

a spec for specifying the target URL

options

RestClient.RequestHeadersUriSpec<?> options()

Start building an HTTP OPTIONS request.

Returns:

a spec for specifying the target URL

method

RestClient.RequestBodyUriSpec method(HttpMethod method)

Start building a request for the given HttpMethod.

Returns:

a spec for specifying the target URL

mutate

RestClient.Builder mutate()

Return a builder to create a new RestClient whose settings are replicated from the current RestClient.

create

static RestClient create()

Create a new RestClient.

See Also:

• create(String)
• builder()

create

static RestClient create(String baseUrl)

Variant of create() that accepts a default base URL. For more details see Builder.baseUrl(String).

Parameters:

baseUrl - the base URI for all requests

See Also:

• builder()

create

static RestClient create(RestTemplate restTemplate)

Create a new RestClient based on the configuration of the given RestTemplate. The returned builder is configured with the template's

• ClientHttpRequestFactory,
• HttpMessageConverters,
• ClientHttpRequestInterceptors,
• ClientHttpRequestInitializers,
• UriBuilderFactory, and
• error handler.

Parameters:

restTemplate - the rest template to base the returned client's configuration on

Returns:

a RestClient initialized with the restTemplate's configuration

builder

static RestClient.Builder builder()

Obtain a RestClient builder.

builder

static RestClient.Builder builder(RestTemplate restTemplate)

Obtain a RestClient builder based on the configuration of the given RestTemplate. The returned builder is configured with the template's

• ClientHttpRequestFactory,
• HttpMessageConverters,
• ClientHttpRequestInterceptors,
• ClientHttpRequestInitializers,
• UriBuilderFactory, and
• error handler.

Parameters:

restTemplate - the rest template to base the returned builder's configuration on

Returns:

a RestClient builder initialized with restTemplate's configuration