spring ResponseErrorHandler 源码
spring ResponseErrorHandler 代码
文件路径：/spring-web/src/main/java/org/springframework/web/client/ResponseErrorHandler.java
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.client;
import java.io.IOException;
import java.net.URI;
import org.springframework.http.HttpMethod;
import org.springframework.http.client.ClientHttpResponse;
/**
* Strategy interface used by the {@link RestTemplate} to determine
* whether a particular response has an error or not.
*
* @author Arjen Poutsma
* @since 3.0
*/
public interface ResponseErrorHandler {
/**
* Indicate whether the given response has any errors.
* <p>Implementations will typically inspect the
* {@link ClientHttpResponse#getStatusCode() HttpStatus} of the response.
* @param response the response to inspect
* @return {@code true} if the response indicates an error; {@code false} otherwise
* @throws IOException in case of I/O errors
*/
boolean hasError(ClientHttpResponse response) throws IOException;
/**
* Handle the error in the given response.
* <p>This method is only called when {@link #hasError(ClientHttpResponse)}
* has returned {@code true}.
* @param response the response with the error
* @throws IOException in case of I/O errors
*/
void handleError(ClientHttpResponse response) throws IOException;
/**
* Alternative to {@link #handleError(ClientHttpResponse)} with extra
* information providing access to the request URL and HTTP method.
* @param url the request URL
* @param method the HTTP method
* @param response the response with the error
* @throws IOException in case of I/O errors
* @since 5.0
*/
default void handleError(URI url, HttpMethod method, ClientHttpResponse response) throws IOException {
handleError(response);
}
}
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