RestTemplate (Spring Framework 4.2.4.RELEASE API)

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 HttpAccessor.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 HttpAccessor.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(List<HttpMessageConverter<?>> messageConverters)` Create a new instance of the `RestTemplate` using the given list of `HttpMessageConverter` to use

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected <T> RequestCallback`	`acceptHeaderRequestCallback(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(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(RequestEntity<?> requestEntity, 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(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(String url, HttpMethod method, HttpEntity<?> requestEntity, ParameterizedTypeReference<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, ParameterizedTypeReference<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> ResponseEntity<T>`	`exchange(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(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()` Return the message body converters.
`UriTemplateHandler`	`getUriTemplateHandler()` Return the configured URI template handler.
`protected void`	`handleResponse(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(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.
`protected <T> RequestCallback`	`httpEntityCallback(Object requestBody)` Returns a request callback implementation that writes the given object to the request stream.
`protected <T> RequestCallback`	`httpEntityCallback(Object requestBody, Type responseType)` Returns a request callback implementation that writes the given object to the request stream.
`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.
`protected <T> ResponseExtractor<ResponseEntity<T>>`	`responseEntityExtractor(Type responseType)` Returns a response extractor for `ResponseEntity`.
`void`	`setErrorHandler(ResponseErrorHandler errorHandler)` Set the error handler.
`void`	`setMessageConverters(List<HttpMessageConverter<?>> messageConverters)` Set the message body converters to use.
`void`	`setUriTemplateHandler(UriTemplateHandler handler)` Set a custom `UriTemplateHandler` for expanding URI templates.

Methods inherited from class org.springframework.http.client.support.InterceptingHttpAccessor
getInterceptors, getRequestFactory, setInterceptors

Methods inherited from class org.springframework.http.client.support.HttpAccessor
createRequest, 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. 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(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(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()
```
    Return the message body converters.
  - setErrorHandler
```
public void setErrorHandler(ResponseErrorHandler errorHandler)
```
    Set the error handler.
    By default, RestTemplate uses a DefaultResponseErrorHandler.
  - getErrorHandler
```
public ResponseErrorHandler getErrorHandler()
```
    Return the error handler.
  - setUriTemplateHandler
```
public void setUriTemplateHandler(UriTemplateHandler handler)
```
    Set a custom UriTemplateHandler for expanding URI templates.
    By default, RestTemplate uses DefaultUriTemplateHandler.
    
    Parameters:
    
    handler - the URI template handler to use
  - getUriTemplateHandler
```
public UriTemplateHandler getUriTemplateHandler()
```
    Return the configured URI template handler.
  - 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
  - exchange
```
public <T> ResponseEntity<T> exchange(String url,
                                      HttpMethod method,
                                      HttpEntity<?> requestEntity,
                                      ParameterizedTypeReference<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. 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(String url,
                                      HttpMethod method,
                                      HttpEntity<?> requestEntity,
                                      ParameterizedTypeReference<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. 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(URI url,
                                      HttpMethod method,
                                      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,
                                      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
```
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
  - handleResponse
```
protected void handleResponse(URI url,
                              HttpMethod method,
                              ClientHttpResponse response)
                       throws 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:
    
    IOException - if propagated from ResponseErrorHandler
    
    Since:
    
    4.1.6
    
    See Also:
    
    setErrorHandler(org.springframework.web.client.ResponseErrorHandler)
  - acceptHeaderRequestCallback
```
protected <T> RequestCallback acceptHeaderRequestCallback(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(Object requestBody)
```
    Returns a request callback implementation that writes the given object to the request stream.
  - httpEntityCallback
```
protected <T> RequestCallback httpEntityCallback(Object requestBody,
                                                 Type responseType)
```
    Returns a request callback implementation that writes the given object to the request stream.
  - responseEntityExtractor
```
protected <T> ResponseExtractor<ResponseEntity<T>> responseEntityExtractor(Type responseType)
```
    Returns a response extractor for ResponseEntity.
  - headersExtractor
```
protected ResponseExtractor<HttpHeaders> headersExtractor()
```
    Returns a response extractor for HttpHeaders.

Class RestTemplate

Field Summary

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Constructor Detail

RestTemplate

RestTemplate

RestTemplate

Method Detail

setMessageConverters

getMessageConverters

setErrorHandler

getErrorHandler

setUriTemplateHandler

getUriTemplateHandler

getForObject

getForObject

getForObject

getForEntity

getForEntity

getForEntity

headForHeaders

headForHeaders

headForHeaders

postForLocation

postForLocation

postForLocation

postForObject

postForObject

postForObject

postForEntity

postForEntity

postForEntity

put

put

put

delete

delete

delete

optionsForAllow

optionsForAllow

optionsForAllow

exchange

exchange

exchange

exchange

exchange

exchange

exchange

exchange

execute

execute

execute

doExecute

handleResponse

acceptHeaderRequestCallback

httpEntityCallback

httpEntityCallback

responseEntityExtractor

headersExtractor