Java tutorial
/* * Copyright 2002-2019 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.nio.charset.Charset; import org.springframework.http.HttpHeaders; import org.springframework.http.HttpStatus; import org.springframework.lang.Nullable; import org.springframework.util.StringUtils; /** * Abstract base class for exceptions based on an {@link HttpStatus}. * * @author Arjen Poutsma * @author Chris Beams * @author Rossen Stoyanchev * @since 3.0 */ public abstract class HttpStatusCodeException extends RestClientResponseException { private static final long serialVersionUID = 5696801857651587810L; private final HttpStatus statusCode; /** * Construct a new instance with an {@link HttpStatus}. * @param statusCode the status code */ protected HttpStatusCodeException(HttpStatus statusCode) { this(statusCode, statusCode.name(), null, null, null); } /** * Construct a new instance with an {@link HttpStatus} and status text. * @param statusCode the status code * @param statusText the status text */ protected HttpStatusCodeException(HttpStatus statusCode, String statusText) { this(statusCode, statusText, null, null, null); } /** * Construct instance with an {@link HttpStatus}, status text, and content. * @param statusCode the status code * @param statusText the status text * @param responseBody the response body content, may be {@code null} * @param responseCharset the response body charset, may be {@code null} * @since 3.0.5 */ protected HttpStatusCodeException(HttpStatus statusCode, String statusText, @Nullable byte[] responseBody, @Nullable Charset responseCharset) { this(statusCode, statusText, null, responseBody, responseCharset); } /** * Construct instance with an {@link HttpStatus}, status text, content, and * a response charset. * @param statusCode the status code * @param statusText the status text * @param responseHeaders the response headers, may be {@code null} * @param responseBody the response body content, may be {@code null} * @param responseCharset the response body charset, may be {@code null} * @since 3.1.2 */ protected HttpStatusCodeException(HttpStatus statusCode, String statusText, @Nullable HttpHeaders responseHeaders, @Nullable byte[] responseBody, @Nullable Charset responseCharset) { super(getMessage(statusCode, statusText), statusCode.value(), statusText, responseHeaders, responseBody, responseCharset); this.statusCode = statusCode; } private static String getMessage(HttpStatus statusCode, String statusText) { if (!StringUtils.hasLength(statusText)) { statusText = statusCode.getReasonPhrase(); } return statusCode.value() + " " + statusText; } /** * Return the HTTP status code. */ public HttpStatus getStatusCode() { return this.statusCode; } }