org.springframework.web.client

Class DefaultResponseErrorHandler

java.lang.Object

org.springframework.web.client.DefaultResponseErrorHandler

All Implemented Interfaces:

ResponseErrorHandler

public class DefaultResponseErrorHandler
extends java.lang.Object
implements ResponseErrorHandler

Spring's default implementation of the ResponseErrorHandler interface.

This error handler checks for the status code on the ClientHttpResponse: Any code with series HttpStatus.Series.CLIENT_ERROR or HttpStatus.Series.SERVER_ERROR is considered to be an error; this behavior can be changed by overriding the hasError(HttpStatus) method. Unknown status codes will be ignored by hasError(ClientHttpResponse).

Since:

3.0

Author:

Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller

See Also:

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

Constructor Summary

Constructors

Constructor and Description
DefaultResponseErrorHandler()

Method Summary

Modifier and Type	Method and Description
protected java.nio.charset.Charset	getCharset(ClientHttpResponse response) Determine the charset of the response (for inclusion in a status exception).
protected HttpStatus	getHttpStatusCode(ClientHttpResponse response) Determine the HTTP status of the given response.
protected byte[]	getResponseBody(ClientHttpResponse response) Read the body of the given response (for inclusion in a status exception).
void	handleError(ClientHttpResponse response) This default implementation throws a HttpClientErrorException if the response status code is HttpStatus.Series.CLIENT_ERROR, a HttpServerErrorException if it is HttpStatus.Series.SERVER_ERROR, and a RestClientException in other cases.
boolean	hasError(ClientHttpResponse response) Delegates to hasError(HttpStatus) (for a standard status enum value) or hasError(int) (for an unknown status code) with the response status code.
protected boolean	hasError(HttpStatus statusCode) Template method called from hasError(ClientHttpResponse).
protected boolean	hasError(int unknownStatusCode) Template method called from hasError(ClientHttpResponse).

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultResponseErrorHandler

public DefaultResponseErrorHandler()

Method Detail

hasError

public boolean hasError(ClientHttpResponse response)
                 throws java.io.IOException

Delegates to hasError(HttpStatus) (for a standard status enum value) or hasError(int) (for an unknown status code) with the response status code.

Specified by:

hasError in interface ResponseErrorHandler

Parameters:

response - the response to inspect

Returns:

true if the response indicates an error; false otherwise

Throws:

java.io.IOException - in case of I/O errors

See Also:

ClientHttpResponse.getRawStatusCode(), hasError(HttpStatus), hasError(int)

hasError

protected boolean hasError(HttpStatus statusCode)

Template method called from hasError(ClientHttpResponse).

The default implementation checks if the given status code is CLIENT_ERROR or SERVER_ERROR. Can be overridden in subclasses.

Parameters:

statusCode - the HTTP status code as enum value

Returns:

true if the response indicates an error; false otherwise

See Also:

HttpStatus.is4xxClientError(), HttpStatus.is5xxServerError()

hasError

protected boolean hasError(int unknownStatusCode)

Template method called from hasError(ClientHttpResponse).

The default implementation checks if the given status code is HttpStatus.Series#CLIENT_ERROR CLIENT_ERROR or HttpStatus.Series#SERVER_ERROR SERVER_ERROR. Can be overridden in subclasses.

Parameters:

unknownStatusCode - the HTTP status code as raw value

Returns:

true if the response indicates an error; false otherwise

Since:

4.3.21

See Also:

HttpStatus.Series#CLIENT_ERROR, HttpStatus.Series#SERVER_ERROR

handleError

public void handleError(ClientHttpResponse response)
                 throws java.io.IOException

This default implementation throws a HttpClientErrorException if the response status code is HttpStatus.Series.CLIENT_ERROR, a HttpServerErrorException if it is HttpStatus.Series.SERVER_ERROR, and a RestClientException in other cases.

Specified by:

handleError in interface ResponseErrorHandler

Parameters:

response - the response with the error

Throws:

java.io.IOException - in case of I/O errors

getHttpStatusCode

protected HttpStatus getHttpStatusCode(ClientHttpResponse response)
                                throws java.io.IOException

Determine the HTTP status of the given response.

Note: Only called from handleError(org.springframework.http.client.ClientHttpResponse), not from hasError(org.springframework.http.client.ClientHttpResponse).

Parameters:

response - the response to inspect

Returns:

the associated HTTP status

Throws:

java.io.IOException - in case of I/O errors

UnknownHttpStatusCodeException - in case of an unknown status code that cannot be represented with the HttpStatus enum

Since:

4.3.8

getResponseBody

protected byte[] getResponseBody(ClientHttpResponse response)

Read the body of the given response (for inclusion in a status exception).

Parameters:

response - the response to inspect

Returns:

the response body as a byte array, or an empty byte array if the body could not be read

Since:

4.3.8

getCharset

protected java.nio.charset.Charset getCharset(ClientHttpResponse response)

Determine the charset of the response (for inclusion in a status exception).

Parameters:

response - the response to inspect

Returns:

the associated charset, or null if none

Since:

4.3.8