spring BodyInserter 源码
spring BodyInserter 代码
文件路径：/spring-webflux/src/main/java/org/springframework/web/reactive/function/BodyInserter.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.reactive.function;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import reactor.core.publisher.Mono;
import org.springframework.http.ReactiveHttpOutputMessage;
import org.springframework.http.codec.HttpMessageWriter;
import org.springframework.http.server.reactive.ServerHttpRequest;
/**
* A combination of functions that can populate a {@link ReactiveHttpOutputMessage} body.
*
* @author Arjen Poutsma
* @since 5.0
* @param <T> the type of data to insert
* @param <M> the type of {@link ReactiveHttpOutputMessage} this inserter can be applied to
* @see BodyInserters
*/
@FunctionalInterface
public interface BodyInserter<T, M extends ReactiveHttpOutputMessage> {
/**
* Insert into the given output message.
* @param outputMessage the response to insert into
* @param context the context to use
* @return a {@code Mono} that indicates completion or error
*/
Mono<Void> insert(M outputMessage, Context context);
/**
* Defines the context used during the insertion.
*/
interface Context {
/**
* Return the {@link HttpMessageWriter HttpMessageWriters} to be used for response body conversion.
* @return the stream of message writers
*/
List<HttpMessageWriter<?>> messageWriters();
/**
* Optionally return the {@link ServerHttpRequest}, if present.
*/
Optional<ServerHttpRequest> serverRequest();
/**
* Return the map of hints to use for response body conversion.
*/
Map<String, Object> hints();
}
}
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