spring security DefaultServerRedirectStrategy 源码
spring security DefaultServerRedirectStrategy 代码
文件路径：/web/src/main/java/org/springframework/security/web/server/DefaultServerRedirectStrategy.java
/*
* 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.security.web.server;
import java.net.URI;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import reactor.core.publisher.Mono;
import org.springframework.core.log.LogMessage;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.Assert;
import org.springframework.web.server.ServerWebExchange;
/**
* The default {@link ServerRedirectStrategy} to use.
*
* @author Rob Winch
* @author Mathieu Ouellet
* @since 5.0
*/
public class DefaultServerRedirectStrategy implements ServerRedirectStrategy {
private static final Log logger = LogFactory.getLog(DefaultServerRedirectStrategy.class);
private HttpStatus httpStatus = HttpStatus.FOUND;
private boolean contextRelative = true;
@Override
public Mono<Void> sendRedirect(ServerWebExchange exchange, URI location) {
Assert.notNull(exchange, "exchange cannot be null");
Assert.notNull(location, "location cannot be null");
return Mono.fromRunnable(() -> {
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(this.httpStatus);
URI newLocation = createLocation(exchange, location);
logger.debug(LogMessage.format("Redirecting to '%s'", newLocation));
response.getHeaders().setLocation(newLocation);
});
}
private URI createLocation(ServerWebExchange exchange, URI location) {
if (!this.contextRelative) {
return location;
}
String url = location.toASCIIString();
if (url.startsWith("/")) {
String context = exchange.getRequest().getPath().contextPath().value();
return URI.create(context + url);
}
return location;
}
/**
* The {@link HttpStatus} to use for the redirect.
* @param httpStatus the status to use. Cannot be null
*/
public void setHttpStatus(HttpStatus httpStatus) {
Assert.notNull(httpStatus, "httpStatus cannot be null");
this.httpStatus = httpStatus;
}
/**
* Sets if the location is relative to the context.
* @param contextRelative if redirects should be relative to the context. Default is
* true.
*/
public void setContextRelative(boolean contextRelative) {
this.contextRelative = contextRelative;
}
}
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