org.springframework.web.client

Class RestTemplate

java.lang.Object

org.springframework.http.client.support.HttpAccessor

org.springframework.http.client.support.InterceptingHttpAccessor

org.springframework.web.client.RestTemplate

All Implemented Interfaces:

RestOperations

public class RestTemplate
extends InterceptingHttpAccessor
implements RestOperations

Spring's central class for synchronous client-side HTTP access. It simplifies communication with HTTP servers, and enforces RESTful principles. It handles HTTP connections, leaving application code to provide URLs (with possible template variables) and extract results.

Note: by default the RestTemplate relies on standard JDK facilities to establish HTTP connections. You can switch to use a different HTTP library such as Apache HttpComponents, Netty, and OkHttp through the InterceptingHttpAccessor.setRequestFactory(org.springframework.http.client.ClientHttpRequestFactory) property.

The main entry points of this template are the methods named after the six main HTTP methods:

HTTP method	RestTemplate methods
DELETE	delete(java.lang.String, java.lang.Object...)
GET	getForObject(java.lang.String, java.lang.Class<T>, java.lang.Object...)
	getForEntity(java.lang.String, java.lang.Class<T>, java.lang.Object...)
HEAD	headForHeaders(java.lang.String, java.lang.Object...)
OPTIONS	optionsForAllow(java.lang.String, java.lang.Object...)
POST	postForLocation(java.lang.String, java.lang.Object, java.lang.Object...)
	postForObject(java.lang.String, java.lang.Object, java.lang.Class<T>, java.lang.Object...)
PUT	put(java.lang.String, java.lang.Object, java.lang.Object...)
any	exchange(java.lang.String, org.springframework.http.HttpMethod, org.springframework.http.HttpEntity<?>, java.lang.Class<T>, java.lang.Object...)
	execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.RequestCallback, org.springframework.web.client.ResponseExtractor<T>, java.lang.Object...)

In addition the exchange and execute methods are generalized versions of the above methods and can be used to support additional, less frequent combinations (e.g. HTTP PATCH, HTTP PUT with response body, etc.). Note however that the underlying HTTP library used must also support the desired combination.

For each HTTP method there are three variants: two accept a URI template string and URI variables (array or map) while a third accepts a URI. Note that for URI templates it is assumed encoding is necessary, e.g. restTemplate.getForObject("http://example.com/hotel list") becomes "http://example.com/hotel%20list". This also means if the URI template or URI variables are already encoded, double encoding will occur, e.g. http://example.com/hotel%20list becomes http://example.com/hotel%2520list). To avoid that use a URI method variant to provide (or re-use) a previously encoded URI. To prepare such an URI with full control over encoding, consider using UriComponentsBuilder.

Internally the template uses HttpMessageConverter instances to convert HTTP messages to and from POJOs. Converters for the main mime types are registered by default but you can also register additional converters via setMessageConverters(java.util.List<org.springframework.http.converter.HttpMessageConverter<?>>).

This template uses a SimpleClientHttpRequestFactory and a DefaultResponseErrorHandler as default strategies for creating HTTP connections or handling HTTP errors, respectively. These defaults can be overridden through InterceptingHttpAccessor.setRequestFactory(org.springframework.http.client.ClientHttpRequestFactory) and setErrorHandler(org.springframework.web.client.ResponseErrorHandler) respectively.

Since:

3.0

Author:

Arjen Poutsma, Brian Clozel, Roy Clarkson, Juergen Hoeller

See Also:

HttpMessageConverter, RequestCallback, ResponseExtractor, ResponseErrorHandler, AsyncRestTemplate

Field Summary

Fields inherited from class org.springframework.http.client.support.HttpAccessor

logger

Constructor Summary

Constructors

Constructor and Description
RestTemplate() Create a new instance of the RestTemplate using default settings.
RestTemplate(ClientHttpRequestFactory requestFactory) Create a new instance of the RestTemplate based on the given ClientHttpRequestFactory.
RestTemplate(java.util.List<HttpMessageConverter<?>> messageConverters) Create a new instance of the RestTemplate using the given list of HttpMessageConverter to use

Method Summary

Modifier and Type	Method and Description
protected <T> RequestCallback	acceptHeaderRequestCallback(java.lang.Class<T> responseType) Returns a request callback implementation that prepares the request Accept headers based on the given response type and configured message converters.
void	delete(java.lang.String url, java.util.Map<java.lang.String,?> uriVariables) Delete the resources at the specified URI.
void	delete(java.lang.String url, java.lang.Object... uriVariables) Delete the resources at the specified URI.
void	delete(java.net.URI url) Delete the resources at the specified URL.
protected <T> T	doExecute(java.net.URI url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor) Execute the given method on the provided URI.
<T> ResponseEntity<T>	exchange(RequestEntity<?> requestEntity, java.lang.Class<T> responseType) Execute the request specified in the given RequestEntity and return the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(RequestEntity<?> requestEntity, ParameterizedTypeReference<T> responseType) Execute the request specified in the given RequestEntity and return the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.lang.String url, HttpMethod method, HttpEntity<?> requestEntity, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.lang.String url, HttpMethod method, HttpEntity<?> requestEntity, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.lang.String url, HttpMethod method, HttpEntity<?> requestEntity, ParameterizedTypeReference<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.lang.String url, HttpMethod method, HttpEntity<?> requestEntity, ParameterizedTypeReference<T> responseType, java.lang.Object... uriVariables) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.net.URI url, HttpMethod method, HttpEntity<?> requestEntity, java.lang.Class<T> responseType) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	exchange(java.net.URI url, HttpMethod method, HttpEntity<?> requestEntity, ParameterizedTypeReference<T> responseType) Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.
<T> T	execute(java.lang.String url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor, java.util.Map<java.lang.String,?> uriVariables) Execute the HTTP method to the given URI template, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.
<T> T	execute(java.lang.String url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor, java.lang.Object... uriVariables) Execute the HTTP method to the given URI template, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.
<T> T	execute(java.net.URI url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor) Execute the HTTP method to the given URL, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.
ResponseErrorHandler	getErrorHandler() Return the error handler.
<T> ResponseEntity<T>	getForEntity(java.lang.String url, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Retrieve a representation by doing a GET on the URI template.
<T> ResponseEntity<T>	getForEntity(java.lang.String url, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Retrieve an entity by doing a GET on the specified URL.
<T> ResponseEntity<T>	getForEntity(java.net.URI url, java.lang.Class<T> responseType) Retrieve a representation by doing a GET on the URL .
<T> T	getForObject(java.lang.String url, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Retrieve a representation by doing a GET on the URI template.
<T> T	getForObject(java.lang.String url, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Retrieve a representation by doing a GET on the specified URL.
<T> T	getForObject(java.net.URI url, java.lang.Class<T> responseType) Retrieve a representation by doing a GET on the URL .
java.util.List<HttpMessageConverter<?>>	getMessageConverters() Return the list of message body converters.
UriTemplateHandler	getUriTemplateHandler() Return the configured URI template handler.
protected void	handleResponse(java.net.URI url, HttpMethod method, ClientHttpResponse response) Handle the given response, performing appropriate logging and invoking the ResponseErrorHandler if necessary.
protected ResponseExtractor<HttpHeaders>	headersExtractor() Returns a response extractor for HttpHeaders.
HttpHeaders	headForHeaders(java.lang.String url, java.util.Map<java.lang.String,?> uriVariables) Retrieve all headers of the resource specified by the URI template.
HttpHeaders	headForHeaders(java.lang.String url, java.lang.Object... uriVariables) Retrieve all headers of the resource specified by the URI template.
HttpHeaders	headForHeaders(java.net.URI url) Retrieve all headers of the resource specified by the URL.
protected <T> RequestCallback	httpEntityCallback(java.lang.Object requestBody) Returns a request callback implementation that writes the given object to the request stream.
protected <T> RequestCallback	httpEntityCallback(java.lang.Object requestBody, java.lang.reflect.Type responseType) Returns a request callback implementation that writes the given object to the request stream.
java.util.Set<HttpMethod>	optionsForAllow(java.lang.String url, java.util.Map<java.lang.String,?> uriVariables) Return the value of the Allow header for the given URI.
java.util.Set<HttpMethod>	optionsForAllow(java.lang.String url, java.lang.Object... uriVariables) Return the value of the Allow header for the given URI.
java.util.Set<HttpMethod>	optionsForAllow(java.net.URI url) Return the value of the Allow header for the given URL.
<T> T	patchForObject(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Update a resource by PATCHing the given object to the URI template, and return the representation found in the response.
<T> T	patchForObject(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Update a resource by PATCHing the given object to the URI template, and return the representation found in the response.
<T> T	patchForObject(java.net.URI url, java.lang.Object request, java.lang.Class<T> responseType) Update a resource by PATCHing the given object to the URL, and return the representation found in the response.
<T> ResponseEntity<T>	postForEntity(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the response as HttpEntity.
<T> ResponseEntity<T>	postForEntity(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the response as ResponseEntity.
<T> ResponseEntity<T>	postForEntity(java.net.URI url, java.lang.Object request, java.lang.Class<T> responseType) Create a new resource by POSTing the given object to the URL, and returns the response as ResponseEntity.
java.net.URI	postForLocation(java.lang.String url, java.lang.Object request, java.util.Map<java.lang.String,?> uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header.
java.net.URI	postForLocation(java.lang.String url, java.lang.Object request, java.lang.Object... uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header.
java.net.URI	postForLocation(java.net.URI url, java.lang.Object request) Create a new resource by POSTing the given object to the URL, and returns the value of the Location header.
<T> T	postForObject(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.util.Map<java.lang.String,?> uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the representation found in the response.
<T> T	postForObject(java.lang.String url, java.lang.Object request, java.lang.Class<T> responseType, java.lang.Object... uriVariables) Create a new resource by POSTing the given object to the URI template, and returns the representation found in the response.
<T> T	postForObject(java.net.URI url, java.lang.Object request, java.lang.Class<T> responseType) Create a new resource by POSTing the given object to the URL, and returns the representation found in the response.
void	put(java.lang.String url, java.lang.Object request, java.util.Map<java.lang.String,?> uriVariables) Creates a new resource by PUTting the given object to URI template.
void	put(java.lang.String url, java.lang.Object request, java.lang.Object... uriVariables) Create or update a resource by PUTting the given object to the URI.
void	put(java.net.URI url, java.lang.Object request) Creates a new resource by PUTting the given object to URL.
protected <T> ResponseExtractor<ResponseEntity<T>>	responseEntityExtractor(java.lang.reflect.Type responseType) Returns a response extractor for ResponseEntity.
void	setDefaultUriVariables(java.util.Map<java.lang.String,?> uriVars) Configure default URI variable values.
void	setErrorHandler(ResponseErrorHandler errorHandler) Set the error handler.
void	setMessageConverters(java.util.List<HttpMessageConverter<?>> messageConverters) Set the message body converters to use.
void	setUriTemplateHandler(UriTemplateHandler handler) Configure the UriTemplateHandler to use to expand URI templates.

Methods inherited from class org.springframework.http.client.support.InterceptingHttpAccessor

getInterceptors, getRequestFactory, setInterceptors, setRequestFactory

Methods inherited from class org.springframework.http.client.support.HttpAccessor

createRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

RestTemplate

public RestTemplate()

Create a new instance of the RestTemplate using default settings. Default HttpMessageConverters are initialized.

RestTemplate

public RestTemplate(ClientHttpRequestFactory requestFactory)

Create a new instance of the RestTemplate based on the given ClientHttpRequestFactory.

Parameters:

requestFactory - HTTP request factory to use

See Also:

SimpleClientHttpRequestFactory, HttpComponentsClientHttpRequestFactory

RestTemplate

public RestTemplate(java.util.List<HttpMessageConverter<?>> messageConverters)

Create a new instance of the RestTemplate using the given list of HttpMessageConverter to use

Parameters:

messageConverters - the list of HttpMessageConverter to use

Since:

3.2.7

Method Detail

setMessageConverters

public void setMessageConverters(java.util.List<HttpMessageConverter<?>> messageConverters)

Set the message body converters to use.

These converters are used to convert from and to HTTP requests and responses.

getMessageConverters

public java.util.List<HttpMessageConverter<?>> getMessageConverters()

Return the list of message body converters.

The returned List is active and may get appended to.

setErrorHandler

public void setErrorHandler(ResponseErrorHandler errorHandler)

Set the error handler.

By default, RestTemplate uses a DefaultResponseErrorHandler.

getErrorHandler

public ResponseErrorHandler getErrorHandler()

Return the error handler.

setDefaultUriVariables

public void setDefaultUriVariables(java.util.Map<java.lang.String,?> uriVars)

Configure default URI variable values. This is a shortcut for:

 DefaultUriBuilderFactory factory = new DefaultUriBuilderFactory();
 handler.setDefaultUriVariables(...);

 RestTemplate restTemplate = new RestTemplate();
 restTemplate.setUriTemplateHandler(handler);
 

Parameters:

uriVars - the default URI variable values

Since:

4.3

setUriTemplateHandler

public void setUriTemplateHandler(UriTemplateHandler handler)

Configure the UriTemplateHandler to use to expand URI templates. By default the DefaultUriBuilderFactory is used which relies on Spring's URI template support and exposes several useful properties that customize its behavior for encoding and for prepending a common base URL. An alternative implementation may be used to plug an external URI template library.

Parameters:

handler - the URI template handler to use

getUriTemplateHandler

public UriTemplateHandler getUriTemplateHandler()

Return the configured URI template handler.

getForObject

@Nullable
public <T> T getForObject(java.lang.String url,
                                    java.lang.Class<T> responseType,
                                    java.lang.Object... uriVariables)
                             throws RestClientException

Description copied from interface: RestOperations

Retrieve a representation by doing a GET on the specified URL. The response (if any) is converted and returned.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

getForObject in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

getForObject

@Nullable
public <T> T getForObject(java.lang.String url,
                                    java.lang.Class<T> responseType,
                                    java.util.Map<java.lang.String,?> uriVariables)
                             throws RestClientException

Description copied from interface: RestOperations

Retrieve a representation by doing a GET on the URI template. The response (if any) is converted and returned.

URI Template variables are expanded using the given map.

Specified by:

getForObject in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

uriVariables - the map containing variables for the URI template

Returns:

the converted object

Throws:

RestClientException

getForObject

@Nullable
public <T> T getForObject(java.net.URI url,
                                    java.lang.Class<T> responseType)
                             throws RestClientException

Description copied from interface: RestOperations

Retrieve a representation by doing a GET on the URL . The response (if any) is converted and returned.

Specified by:

getForObject in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

Returns:

the converted object

Throws:

RestClientException

getForEntity

public <T> ResponseEntity<T> getForEntity(java.lang.String url,
                                          java.lang.Class<T> responseType,
                                          java.lang.Object... uriVariables)
                                   throws RestClientException

Description copied from interface: RestOperations

Retrieve an entity by doing a GET on the specified URL. The response is converted and stored in an ResponseEntity.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

getForEntity in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the entity

Throws:

RestClientException

getForEntity

public <T> ResponseEntity<T> getForEntity(java.lang.String url,
                                          java.lang.Class<T> responseType,
                                          java.util.Map<java.lang.String,?> uriVariables)
                                   throws RestClientException

Description copied from interface: RestOperations

Retrieve a representation by doing a GET on the URI template. The response is converted and stored in an ResponseEntity.

URI Template variables are expanded using the given map.

Specified by:

getForEntity in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

uriVariables - the map containing variables for the URI template

Returns:

the converted object

Throws:

RestClientException

getForEntity

public <T> ResponseEntity<T> getForEntity(java.net.URI url,
                                          java.lang.Class<T> responseType)
                                   throws RestClientException

Description copied from interface: RestOperations

Retrieve a representation by doing a GET on the URL . The response is converted and stored in an ResponseEntity.

Specified by:

getForEntity in interface RestOperations

Parameters:

url - the URL

responseType - the type of the return value

Returns:

the converted object

Throws:

RestClientException

headForHeaders

public HttpHeaders headForHeaders(java.lang.String url,
                                  java.lang.Object... uriVariables)
                           throws RestClientException

Description copied from interface: RestOperations

Retrieve all headers of the resource specified by the URI template.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

headForHeaders in interface RestOperations

Parameters:

url - the URL

uriVariables - the variables to expand the template

Returns:

all HTTP headers of that resource

Throws:

RestClientException

headForHeaders

public HttpHeaders headForHeaders(java.lang.String url,
                                  java.util.Map<java.lang.String,?> uriVariables)
                           throws RestClientException

Description copied from interface: RestOperations

Retrieve all headers of the resource specified by the URI template.

URI Template variables are expanded using the given map.

Specified by:

headForHeaders in interface RestOperations

Parameters:

url - the URL

uriVariables - the map containing variables for the URI template

Returns:

all HTTP headers of that resource

Throws:

RestClientException

headForHeaders

public HttpHeaders headForHeaders(java.net.URI url)
                           throws RestClientException

Description copied from interface: RestOperations

Retrieve all headers of the resource specified by the URL.

Specified by:

headForHeaders in interface RestOperations

Parameters:

url - the URL

Returns:

all HTTP headers of that resource

Throws:

RestClientException

postForLocation

@Nullable
public java.net.URI postForLocation(java.lang.String url,
                                              @Nullable
                                              java.lang.Object request,
                                              java.lang.Object... uriVariables)
                                       throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header. This header typically indicates where the new resource is stored.

URI Template variables are expanded using the given URI variables, if any.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForLocation in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

uriVariables - the variables to expand the template

Returns:

the value for the Location header

Throws:

RestClientException

See Also:

HttpEntity

postForLocation

@Nullable
public java.net.URI postForLocation(java.lang.String url,
                                              @Nullable
                                              java.lang.Object request,
                                              java.util.Map<java.lang.String,?> uriVariables)
                                       throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header. This header typically indicates where the new resource is stored.

URI Template variables are expanded using the given map.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForLocation in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

uriVariables - the variables to expand the template

Returns:

the value for the Location header

Throws:

RestClientException

See Also:

HttpEntity

postForLocation

@Nullable
public java.net.URI postForLocation(java.net.URI url,
                                              @Nullable
                                              java.lang.Object request)
                                       throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URL, and returns the value of the Location header. This header typically indicates where the new resource is stored.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForLocation in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

Returns:

the value for the Location header

Throws:

RestClientException

See Also:

HttpEntity

postForObject

@Nullable
public <T> T postForObject(java.lang.String url,
                                     @Nullable
                                     java.lang.Object request,
                                     java.lang.Class<T> responseType,
                                     java.lang.Object... uriVariables)
                              throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the representation found in the response.

URI Template variables are expanded using the given URI variables, if any.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForObject in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

postForObject

@Nullable
public <T> T postForObject(java.lang.String url,
                                     @Nullable
                                     java.lang.Object request,
                                     java.lang.Class<T> responseType,
                                     java.util.Map<java.lang.String,?> uriVariables)
                              throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the representation found in the response.

URI Template variables are expanded using the given map.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForObject in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

postForObject

@Nullable
public <T> T postForObject(java.net.URI url,
                                     @Nullable
                                     java.lang.Object request,
                                     java.lang.Class<T> responseType)
                              throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URL, and returns the representation found in the response.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForObject in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

responseType - the type of the return value

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

postForEntity

public <T> ResponseEntity<T> postForEntity(java.lang.String url,
                                           @Nullable
                                           java.lang.Object request,
                                           java.lang.Class<T> responseType,
                                           java.lang.Object... uriVariables)
                                    throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the response as ResponseEntity.

URI Template variables are expanded using the given URI variables, if any.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForEntity in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

postForEntity

public <T> ResponseEntity<T> postForEntity(java.lang.String url,
                                           @Nullable
                                           java.lang.Object request,
                                           java.lang.Class<T> responseType,
                                           java.util.Map<java.lang.String,?> uriVariables)
                                    throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URI template, and returns the response as HttpEntity.

URI Template variables are expanded using the given map.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForEntity in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

postForEntity

public <T> ResponseEntity<T> postForEntity(java.net.URI url,
                                           @Nullable
                                           java.lang.Object request,
                                           java.lang.Class<T> responseType)
                                    throws RestClientException

Description copied from interface: RestOperations

Create a new resource by POSTing the given object to the URL, and returns the response as ResponseEntity.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

The body of the entity, or request itself, can be a MultiValueMap to create a multipart request. The values in the MultiValueMap can be any Object representing the body of the part, or an HttpEntity representing a part with body and headers. The MultiValueMap can be built conveniently using MultipartBodyBuilder.

Specified by:

postForEntity in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed (may be null)

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity

put

public void put(java.lang.String url,
                @Nullable
                java.lang.Object request,
                java.lang.Object... uriVariables)
         throws RestClientException

Description copied from interface: RestOperations

Create or update a resource by PUTting the given object to the URI.

URI Template variables are expanded using the given URI variables, if any.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

Specified by:

put in interface RestOperations

Parameters:

url - the URL

request - the Object to be PUT (may be null)

uriVariables - the variables to expand the template

Throws:

RestClientException

See Also:

HttpEntity

put

public void put(java.lang.String url,
                @Nullable
                java.lang.Object request,
                java.util.Map<java.lang.String,?> uriVariables)
         throws RestClientException

Description copied from interface: RestOperations

Creates a new resource by PUTting the given object to URI template.

URI Template variables are expanded using the given map.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

Specified by:

put in interface RestOperations

Parameters:

url - the URL

request - the Object to be PUT (may be null)

uriVariables - the variables to expand the template

Throws:

RestClientException

See Also:

HttpEntity

put

public void put(java.net.URI url,
                @Nullable
                java.lang.Object request)
         throws RestClientException

Description copied from interface: RestOperations

Creates a new resource by PUTting the given object to URL.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

Specified by:

put in interface RestOperations

Parameters:

url - the URL

request - the Object to be PUT (may be null)

Throws:

RestClientException

See Also:

HttpEntity

patchForObject

@Nullable
public <T> T patchForObject(java.lang.String url,
                                      @Nullable
                                      java.lang.Object request,
                                      java.lang.Class<T> responseType,
                                      java.lang.Object... uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Update a resource by PATCHing the given object to the URI template, and return the representation found in the response.

URI Template variables are expanded using the given URI variables, if any.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

NOTE: The standard JDK HTTP library does not support HTTP PATCH. You need to use the Apache HttpComponents or OkHttp request factory.

Specified by:

patchForObject in interface RestOperations

Parameters:

url - the URL

request - the object to be PATCHed (may be null)

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity, InterceptingHttpAccessor.setRequestFactory(org.springframework.http.client.ClientHttpRequestFactory), HttpComponentsAsyncClientHttpRequestFactory, OkHttp3ClientHttpRequestFactory

patchForObject

@Nullable
public <T> T patchForObject(java.lang.String url,
                                      @Nullable
                                      java.lang.Object request,
                                      java.lang.Class<T> responseType,
                                      java.util.Map<java.lang.String,?> uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Update a resource by PATCHing the given object to the URI template, and return the representation found in the response.

URI Template variables are expanded using the given map.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

NOTE: The standard JDK HTTP library does not support HTTP PATCH. You need to use the Apache HttpComponents or OkHttp request factory.

Specified by:

patchForObject in interface RestOperations

Parameters:

url - the URL

request - the object to be PATCHed (may be null)

responseType - the type of the return value

uriVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity, InterceptingHttpAccessor.setRequestFactory(org.springframework.http.client.ClientHttpRequestFactory), HttpComponentsAsyncClientHttpRequestFactory, OkHttp3ClientHttpRequestFactory

patchForObject

@Nullable
public <T> T patchForObject(java.net.URI url,
                                      @Nullable
                                      java.lang.Object request,
                                      java.lang.Class<T> responseType)
                               throws RestClientException

Description copied from interface: RestOperations

Update a resource by PATCHing the given object to the URL, and return the representation found in the response.

The request parameter can be a HttpEntity in order to add additional HTTP headers to the request.

NOTE: The standard JDK HTTP library does not support HTTP PATCH. You need to use the Apache HttpComponents or OkHttp request factory.

Specified by:

patchForObject in interface RestOperations

Parameters:

url - the URL

request - the object to be PATCHed (may be null)

responseType - the type of the return value

Returns:

the converted object

Throws:

RestClientException

See Also:

HttpEntity, InterceptingHttpAccessor.setRequestFactory(org.springframework.http.client.ClientHttpRequestFactory), HttpComponentsAsyncClientHttpRequestFactory, OkHttp3ClientHttpRequestFactory

delete

public void delete(java.lang.String url,
                   java.lang.Object... uriVariables)
            throws RestClientException

Description copied from interface: RestOperations

Delete the resources at the specified URI.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

delete in interface RestOperations

Parameters:

url - the URL

uriVariables - the variables to expand in the template

Throws:

RestClientException

delete

public void delete(java.lang.String url,
                   java.util.Map<java.lang.String,?> uriVariables)
            throws RestClientException

Description copied from interface: RestOperations

Delete the resources at the specified URI.

URI Template variables are expanded using the given map.

Specified by:

delete in interface RestOperations

Parameters:

url - the URL

uriVariables - the variables to expand the template

Throws:

RestClientException

delete

public void delete(java.net.URI url)
            throws RestClientException

Description copied from interface: RestOperations

Delete the resources at the specified URL.

Specified by:

delete in interface RestOperations

Parameters:

url - the URL

Throws:

RestClientException

optionsForAllow

public java.util.Set<HttpMethod> optionsForAllow(java.lang.String url,
                                                 java.lang.Object... uriVariables)
                                          throws RestClientException

Description copied from interface: RestOperations

Return the value of the Allow header for the given URI.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

optionsForAllow in interface RestOperations

Parameters:

url - the URL

uriVariables - the variables to expand in the template

Returns:

the value of the allow header

Throws:

RestClientException

optionsForAllow

public java.util.Set<HttpMethod> optionsForAllow(java.lang.String url,
                                                 java.util.Map<java.lang.String,?> uriVariables)
                                          throws RestClientException

Description copied from interface: RestOperations

Return the value of the Allow header for the given URI.

URI Template variables are expanded using the given map.

Specified by:

optionsForAllow in interface RestOperations

Parameters:

url - the URL

uriVariables - the variables to expand in the template

Returns:

the value of the allow header

Throws:

RestClientException

optionsForAllow

public java.util.Set<HttpMethod> optionsForAllow(java.net.URI url)
                                          throws RestClientException

Description copied from interface: RestOperations

Return the value of the Allow header for the given URL.

Specified by:

optionsForAllow in interface RestOperations

Parameters:

url - the URL

Returns:

the value of the allow header

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.lang.String url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      java.lang.Class<T> responseType,
                                      java.lang.Object... uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request may be null)

responseType - the type of the return value

uriVariables - the variables to expand in the template

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.lang.String url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      java.lang.Class<T> responseType,
                                      java.util.Map<java.lang.String,?> uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request (may be null)

responseType - the type of the return value

uriVariables - the variables to expand in the template

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.net.URI url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      java.lang.Class<T> responseType)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity.

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request (may be null)

responseType - the type of the return value

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.lang.String url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      ParameterizedTypeReference<T> responseType,
                                      java.lang.Object... uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity. The given ParameterizedTypeReference is used to pass generic type information:

 ParameterizedTypeReference<List<MyBean>> myBean =
     new ParameterizedTypeReference<List<MyBean>>() {};

 ResponseEntity<List<MyBean>> response =
     template.exchange("http://example.com",HttpMethod.GET, null, myBean);
 

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request (may be null)

responseType - the type of the return value

uriVariables - the variables to expand in the template

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.lang.String url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      ParameterizedTypeReference<T> responseType,
                                      java.util.Map<java.lang.String,?> uriVariables)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity. The given ParameterizedTypeReference is used to pass generic type information:

 ParameterizedTypeReference<List<MyBean>> myBean =
     new ParameterizedTypeReference<List<MyBean>>() {};

 ResponseEntity<List<MyBean>> response =
     template.exchange("http://example.com",HttpMethod.GET, null, myBean);
 

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request (may be null)

responseType - the type of the return value

uriVariables - the variables to expand in the template

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(java.net.URI url,
                                      HttpMethod method,
                                      @Nullable
                                      HttpEntity<?> requestEntity,
                                      ParameterizedTypeReference<T> responseType)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, writing the given request entity to the request, and returns the response as ResponseEntity. The given ParameterizedTypeReference is used to pass generic type information:

 ParameterizedTypeReference<List<MyBean>> myBean =
     new ParameterizedTypeReference<List<MyBean>>() {};

 ResponseEntity<List<MyBean>> response =
     template.exchange("http://example.com",HttpMethod.GET, null, myBean);
 

Specified by:

exchange in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestEntity - the entity (headers and/or body) to write to the request (may be null)

responseType - the type of the return value

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(RequestEntity<?> requestEntity,
                                      java.lang.Class<T> responseType)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the request specified in the given RequestEntity and return the response as ResponseEntity. Typically used in combination with the static builder methods on RequestEntity, for instance:

 MyRequest body = ...
 RequestEntity request = RequestEntity
     .post(new URI("http://example.com/foo"))
     .accept(MediaType.APPLICATION_JSON)
     .body(body);
 ResponseEntity<MyResponse> response = template.exchange(request, MyResponse.class);
 

Specified by:

exchange in interface RestOperations

Parameters:

requestEntity - the entity to write to the request

responseType - the type of the return value

Returns:

the response as entity

Throws:

RestClientException

exchange

public <T> ResponseEntity<T> exchange(RequestEntity<?> requestEntity,
                                      ParameterizedTypeReference<T> responseType)
                               throws RestClientException

Description copied from interface: RestOperations

Execute the request specified in the given RequestEntity and return the response as ResponseEntity. The given ParameterizedTypeReference is used to pass generic type information:

 MyRequest body = ...
 RequestEntity request = RequestEntity
     .post(new URI("http://example.com/foo"))
     .accept(MediaType.APPLICATION_JSON)
     .body(body);
 ParameterizedTypeReference<List<MyResponse>> myBean =
     new ParameterizedTypeReference<List<MyResponse>>() {};
 ResponseEntity<List<MyResponse>> response = template.exchange(request, myBean);
 

Specified by:

exchange in interface RestOperations

Parameters:

requestEntity - the entity to write to the request

responseType - the type of the return value

Returns:

the response as entity

Throws:

RestClientException

execute

@Nullable
public <T> T execute(java.lang.String url,
                               HttpMethod method,
                               @Nullable
                               RequestCallback requestCallback,
                               @Nullable
                               ResponseExtractor<T> responseExtractor,
                               java.lang.Object... uriVariables)
                        throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.

URI Template variables are expanded using the given URI variables, if any.

Specified by:

execute in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestCallback - object that prepares the request

responseExtractor - object that extracts the return value from the response

uriVariables - the variables to expand in the template

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

execute

@Nullable
public <T> T execute(java.lang.String url,
                               HttpMethod method,
                               @Nullable
                               RequestCallback requestCallback,
                               @Nullable
                               ResponseExtractor<T> responseExtractor,
                               java.util.Map<java.lang.String,?> uriVariables)
                        throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URI template, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.

URI Template variables are expanded using the given URI variables map.

Specified by:

execute in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestCallback - object that prepares the request

responseExtractor - object that extracts the return value from the response

uriVariables - the variables to expand in the template

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

execute

@Nullable
public <T> T execute(java.net.URI url,
                               @Nullable
                               HttpMethod method,
                               @Nullable
                               RequestCallback requestCallback,
                               @Nullable
                               ResponseExtractor<T> responseExtractor)
                        throws RestClientException

Description copied from interface: RestOperations

Execute the HTTP method to the given URL, preparing the request with the RequestCallback, and reading the response with a ResponseExtractor.

Specified by:

execute in interface RestOperations

Parameters:

url - the URL

method - the HTTP method (GET, POST, etc)

requestCallback - object that prepares the request

responseExtractor - object that extracts the return value from the response

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

doExecute

@Nullable
protected <T> T doExecute(java.net.URI url,
                                    @Nullable
                                    HttpMethod method,
                                    @Nullable
                                    RequestCallback requestCallback,
                                    @Nullable
                                    ResponseExtractor<T> responseExtractor)
                             throws RestClientException

Execute the given method on the provided URI.

The ClientHttpRequest is processed using the RequestCallback; the response with the ResponseExtractor.

Parameters:

url - the fully-expanded URL to connect to

method - the HTTP method to execute (GET, POST, etc.)

requestCallback - object that prepares the request (can be null)

responseExtractor - object that extracts the return value from the response (can be null)

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

handleResponse

protected void handleResponse(java.net.URI url,
                              HttpMethod method,
                              ClientHttpResponse response)
                       throws java.io.IOException

Handle the given response, performing appropriate logging and invoking the ResponseErrorHandler if necessary.

Can be overridden in subclasses.

Parameters:

url - the fully-expanded URL to connect to

method - the HTTP method to execute (GET, POST, etc.)

response - the resulting ClientHttpResponse

Throws:

java.io.IOException - if propagated from ResponseErrorHandler

Since:

4.1.6

See Also:

setErrorHandler(org.springframework.web.client.ResponseErrorHandler)

acceptHeaderRequestCallback

protected <T> RequestCallback acceptHeaderRequestCallback(java.lang.Class<T> responseType)

Returns a request callback implementation that prepares the request Accept headers based on the given response type and configured message converters.

httpEntityCallback

protected <T> RequestCallback httpEntityCallback(@Nullable
                                                 java.lang.Object requestBody)

Returns a request callback implementation that writes the given object to the request stream.

httpEntityCallback

protected <T> RequestCallback httpEntityCallback(@Nullable
                                                 java.lang.Object requestBody,
                                                 java.lang.reflect.Type responseType)

Returns a request callback implementation that writes the given object to the request stream.

responseEntityExtractor

protected <T> ResponseExtractor<ResponseEntity<T>> responseEntityExtractor(java.lang.reflect.Type responseType)

Returns a response extractor for ResponseEntity.

headersExtractor

protected ResponseExtractor<HttpHeaders> headersExtractor()

Returns a response extractor for HttpHeaders.