org.springframework.web.server.ResponseStatusException Maven / Gradle / Ivy
/*
* Copyright 2002-2020 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.server;
import java.util.Collections;
import java.util.Map;
import org.springframework.core.NestedExceptionUtils;
import org.springframework.core.NestedRuntimeException;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Base class for exceptions associated with specific HTTP response status codes.
*
* @author Rossen Stoyanchev
* @author Juergen Hoeller
* @since 5.0
*/
@SuppressWarnings("serial")
public class ResponseStatusException extends NestedRuntimeException {
private final HttpStatus status;
@Nullable
private final String reason;
/**
* Constructor with a response status.
* @param status the HTTP status (required)
*/
public ResponseStatusException(HttpStatus status) {
this(status, null, null);
}
/**
* Constructor with a response status and a reason to add to the exception
* message as explanation.
* @param status the HTTP status (required)
* @param reason the associated reason (optional)
*/
public ResponseStatusException(HttpStatus status, @Nullable String reason) {
this(status, reason, null);
}
/**
* Constructor with a response status and a reason to add to the exception
* message as explanation, as well as a nested exception.
* @param status the HTTP status (required)
* @param reason the associated reason (optional)
* @param cause a nested exception (optional)
*/
public ResponseStatusException(HttpStatus status, @Nullable String reason, @Nullable Throwable cause) {
super(null, cause);
Assert.notNull(status, "HttpStatus is required");
this.status = status;
this.reason = reason;
}
/**
* Return the HTTP status associated with this exception.
*/
public HttpStatus getStatus() {
return this.status;
}
/**
* Return headers associated with the exception that should be added to the
* error response, e.g. "Allow", "Accept", etc.
* The default implementation in this class returns an empty map.
* @since 5.1.11
* @deprecated as of 5.1.13 in favor of {@link #getResponseHeaders()}
*/
@Deprecated
public Map getHeaders() {
return Collections.emptyMap();
}
/**
* Return headers associated with the exception that should be added to the
* error response, e.g. "Allow", "Accept", etc.
* The default implementation in this class returns empty headers.
* @since 5.1.13
*/
public HttpHeaders getResponseHeaders() {
Map headers = getHeaders();
if (headers.isEmpty()) {
return HttpHeaders.EMPTY;
}
HttpHeaders result = new HttpHeaders();
getHeaders().forEach(result::add);
return result;
}
/**
* The reason explaining the exception (potentially {@code null} or empty).
*/
@Nullable
public String getReason() {
return this.reason;
}
@Override
public String getMessage() {
String msg = this.status + (this.reason != null ? " \"" + this.reason + "\"" : "");
return NestedExceptionUtils.buildMessage(msg, getCause());
}
}