org.springframework.web.client
Class RestTemplate

java.lang.Object
  org.springframework.http.client.support.HttpAccessor
      org.springframework.web.client.RestTemplate

All Implemented Interfaces:

RestOperations

public class RestTemplate
extends HttpAccessor
implements RestOperations

The central class for 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.

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, java.lang.Object...)
	getForEntity(java.lang.String, java.lang.Class, 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, 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, java.lang.Object...)
	execute(java.lang.String, org.springframework.http.HttpMethod, org.springframework.web.client.RequestCallback, org.springframework.web.client.ResponseExtractor, java.lang.Object...)

For each of these HTTP methods, there are three corresponding Java methods in the RestTemplate. Two variant take a String URI as first argument (eg. getForObject(String, Class, Object[]), getForObject(String, Class, Map)), and are capable of substituting any URI templates in that URL using either a String variable arguments array, or a Map<String, String>. The string varargs variant expands the given template variables in order, so that

 String result = restTemplate.getForObject("http://example.com/hotels/{hotel}/bookings/{booking}", String.class,"42",
 "21");
 

will perform a GET on http://example.com/hotels/42/bookings/21. The map variant expands the template based on variable name, and is therefore more useful when using many variables, or when a single variable is used multiple times. For example:

 Map<String, String> vars = Collections.singletonMap("hotel", "42");
 String result = restTemplate.getForObject("http://example.com/hotels/{hotel}/rooms/{hotel}", String.class, vars);
 

will perform a GET on http://example.com/hotels/42/rooms/42. Alternatively, there are URI variant methods (getForObject(URI, Class)), which do not allow for URI templates, but allow you to reuse a single, expanded URI multiple times.

Furthermore, the String-argument methods assume that the URL String is unencoded. This means that

 restTemplate.getForObject("http://example.com/hotel list");
 

will perform a GET on http://example.com/hotel%20list. As a result, any URL passed that is already encoded will be encoded twice (i.e. http://example.com/hotel%20list will become http://example.com/hotel%2520list). If this behavior is undesirable, use the URI-argument methods, which will not perform any URL encoding.

Objects passed to and returned from these methods are converted to and from HTTP messages by HttpMessageConverter instances. Converters for the main mime types are registered by default, but you can also write your own converter and register it via the messageConverters bean property.

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 the requestFactory and errorHandler bean properties.

Since:

3.0

Author:

Arjen Poutsma

See Also:

HttpMessageConverter, RequestCallback, ResponseExtractor, ResponseErrorHandler

Field Summary

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

logger

Constructor Summary

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.

Method Summary

void	delete(String url, Map<String,?> urlVariables) Delete the resources at the specified URI.
void	delete(String url, Object... urlVariables) Delete the resources at the specified URI.
void	delete(URI url) Delete the resources at the specified URL.
protected <T> T	doExecute(URI url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor) Execute the given method on the provided URI.
<T> ResponseEntity<T>	exchange(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, Map<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(String url, HttpMethod method, HttpEntity<?> requestEntity, Class<T> responseType, 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(URI url, HttpMethod method, HttpEntity<?> requestEntity, 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> T	execute(String url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor, Map<String,?> urlVariables) 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(String url, HttpMethod method, RequestCallback requestCallback, ResponseExtractor<T> responseExtractor, Object... urlVariables) 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(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(String url, Class<T> responseType, Map<String,?> urlVariables) Retrieve a representation by doing a GET on the URI template.
<T> ResponseEntity<T>	getForEntity(String url, Class<T> responseType, Object... urlVariables) Retrieve an entity by doing a GET on the specified URL.
<T> ResponseEntity<T>	getForEntity(URI url, Class<T> responseType) Retrieve a representation by doing a GET on the URL .
<T> T	getForObject(String url, Class<T> responseType, Map<String,?> urlVariables) Retrieve a representation by doing a GET on the URI template.
<T> T	getForObject(String url, Class<T> responseType, Object... urlVariables) Retrieve a representation by doing a GET on the specified URL.
<T> T	getForObject(URI url, Class<T> responseType) Retrieve a representation by doing a GET on the URL .
List<HttpMessageConverter<?>>	getMessageConverters() Returns the message body converters.
HttpHeaders	headForHeaders(String url, Map<String,?> urlVariables) Retrieve all headers of the resource specified by the URI template.
HttpHeaders	headForHeaders(String url, Object... urlVariables) Retrieve all headers of the resource specified by the URI template.
HttpHeaders	headForHeaders(URI url) Retrieve all headers of the resource specified by the URL.
Set<HttpMethod>	optionsForAllow(String url, Map<String,?> urlVariables) Return the value of the Allow header for the given URI.
Set<HttpMethod>	optionsForAllow(String url, Object... urlVariables) Return the value of the Allow header for the given URI.
Set<HttpMethod>	optionsForAllow(URI url) Return the value of the Allow header for the given URL.
<T> ResponseEntity<T>	postForEntity(String url, Object request, Class<T> responseType, Map<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(String url, Object request, Class<T> responseType, 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(URI url, Object request, Class<T> responseType) Create a new resource by POSTing the given object to the URL, and returns the response as ResponseEntity.
URI	postForLocation(String url, Object request, Map<String,?> urlVariables) Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header.
URI	postForLocation(String url, Object request, Object... urlVariables) Create a new resource by POSTing the given object to the URI template, and returns the value of the Location header.
URI	postForLocation(URI url, 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(String url, Object request, Class<T> responseType, Map<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(String url, Object request, Class<T> responseType, 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(URI url, Object request, 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(String url, Object request, Map<String,?> urlVariables) Creates a new resource by PUTting the given object to URI template.
void	put(String url, Object request, Object... urlVariables) Create or update a resource by PUTting the given object to the URI.
void	put(URI url, Object request) Creates a new resource by PUTting the given object to URL.
void	setErrorHandler(ResponseErrorHandler errorHandler) Set the error handler.
void	setMessageConverters(List<HttpMessageConverter<?>> messageConverters) Set the message body converters to use.

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

createRequest, getRequestFactory, setRequestFactory

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.

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, CommonsClientHttpRequestFactory

Method Detail

setMessageConverters

public void setMessageConverters(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 List<HttpMessageConverter<?>> getMessageConverters()

Returns the message body converters. These converters are used to convert from and to HTTP requests and responses.

setErrorHandler

public void setErrorHandler(ResponseErrorHandler errorHandler)

Set the error handler.

getErrorHandler

public ResponseErrorHandler getErrorHandler()

Return the error handler. By default, this is the DefaultResponseErrorHandler.

getForObject

public <T> T getForObject(String url,
                          Class<T> responseType,
                          Object... urlVariables)
               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

urlVariables - the variables to expand the template

Returns:

the converted object

Throws:

RestClientException

getForObject

public <T> T getForObject(String url,
                          Class<T> responseType,
                          Map<String,?> urlVariables)
               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

urlVariables - the map containing variables for the URI template

Returns:

the converted object

Throws:

RestClientException

getForObject

public <T> T getForObject(URI url,
                          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(String url,
                                          Class<T> responseType,
                                          Object... urlVariables)
                               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

urlVariables - the variables to expand the template

Returns:

the entity

Throws:

RestClientException

getForEntity

public <T> ResponseEntity<T> getForEntity(String url,
                                          Class<T> responseType,
                                          Map<String,?> urlVariables)
                               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

urlVariables - the map containing variables for the URI template

Returns:

the converted object

Throws:

RestClientException

getForEntity

public <T> ResponseEntity<T> getForEntity(URI url,
                                          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(String url,
                                  Object... urlVariables)
                           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

urlVariables - the variables to expand the template

Returns:

all HTTP headers of that resource

Throws:

RestClientException

headForHeaders

public HttpHeaders headForHeaders(String url,
                                  Map<String,?> urlVariables)
                           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

urlVariables - the map containing variables for the URI template

Returns:

all HTTP headers of that resource

Throws:

RestClientException

headForHeaders

public HttpHeaders headForHeaders(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

public URI postForLocation(String url,
                           Object request,
                           Object... urlVariables)
                    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.

Specified by:

postForLocation in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed, may be null

urlVariables - the variables to expand the template

Returns:

the value for the Location header

Throws:

RestClientException

See Also:

HttpEntity

postForLocation

public URI postForLocation(String url,
                           Object request,
                           Map<String,?> urlVariables)
                    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.

Specified by:

postForLocation in interface RestOperations

Parameters:

url - the URL

request - the Object to be POSTed, may be null

urlVariables - the variables to expand the template

Returns:

the value for the Location header

Throws:

RestClientException

See Also:

HttpEntity

postForLocation

public URI postForLocation(URI url,
                           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.

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

public <T> T postForObject(String url,
                           Object request,
                           Class<T> responseType,
                           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.

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

public <T> T postForObject(String url,
                           Object request,
                           Class<T> responseType,
                           Map<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.

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

public <T> T postForObject(URI url,
                           Object request,
                           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.

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(String url,
                                           Object request,
                                           Class<T> responseType,
                                           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.

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(String url,
                                           Object request,
                                           Class<T> responseType,
                                           Map<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.

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(URI url,
                                           Object request,
                                           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.

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(String url,
                Object request,
                Object... urlVariables)
         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

urlVariables - the variables to expand the template

Throws:

RestClientException

See Also:

HttpEntity

put

public void put(String url,
                Object request,
                Map<String,?> urlVariables)
         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

urlVariables - the variables to expand the template

Throws:

RestClientException

See Also:

HttpEntity

put

public void put(URI url,
                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

delete

public void delete(String url,
                   Object... urlVariables)
            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

urlVariables - the variables to expand in the template

Throws:

RestClientException

delete

public void delete(String url,
                   Map<String,?> urlVariables)
            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

urlVariables - the variables to expand the template

Throws:

RestClientException

delete

public void delete(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 Set<HttpMethod> optionsForAllow(String url,
                                       Object... urlVariables)
                                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

urlVariables - the variables to expand in the template

Returns:

the value of the allow header

Throws:

RestClientException

optionsForAllow

public Set<HttpMethod> optionsForAllow(String url,
                                       Map<String,?> urlVariables)
                                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

urlVariables - the variables to expand in the template

Returns:

the value of the allow header

Throws:

RestClientException

optionsForAllow

public Set<HttpMethod> optionsForAllow(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(String url,
                                      HttpMethod method,
                                      HttpEntity<?> requestEntity,
                                      Class<T> responseType,
                                      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(String url,
                                      HttpMethod method,
                                      HttpEntity<?> requestEntity,
                                      Class<T> responseType,
                                      Map<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(URI url,
                                      HttpMethod method,
                                      HttpEntity<?> requestEntity,
                                      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

execute

public <T> T execute(String url,
                     HttpMethod method,
                     RequestCallback requestCallback,
                     ResponseExtractor<T> responseExtractor,
                     Object... urlVariables)
          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

urlVariables - the variables to expand in the template

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

execute

public <T> T execute(String url,
                     HttpMethod method,
                     RequestCallback requestCallback,
                     ResponseExtractor<T> responseExtractor,
                     Map<String,?> urlVariables)
          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

urlVariables - the variables to expand in the template

Returns:

an arbitrary object, as returned by the ResponseExtractor

Throws:

RestClientException

execute

public <T> T execute(URI url,
                     HttpMethod method,
                     RequestCallback requestCallback,
                     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

protected <T> T doExecute(URI url,
                          HttpMethod method,
                          RequestCallback requestCallback,
                          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