spring StreamingHttpOutputMessage 源码
spring StreamingHttpOutputMessage 代码
文件路径：/spring-web/src/main/java/org/springframework/http/StreamingHttpOutputMessage.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.http;
import java.io.IOException;
import java.io.OutputStream;
/**
* Represents an HTTP output message that allows for setting a streaming body.
* Note that such messages typically do not support {@link #getBody()} access.
*
* @author Arjen Poutsma
* @since 4.0
* @see #setBody
*/
public interface StreamingHttpOutputMessage extends HttpOutputMessage {
/**
* Set the streaming body callback for this message.
* @param body the streaming body callback
*/
void setBody(Body body);
/**
* Defines the contract for bodies that can be written directly to an
* {@link OutputStream}. Useful with HTTP client libraries that provide
* indirect access to an {@link OutputStream} via a callback mechanism.
*/
@FunctionalInterface
interface Body {
/**
* Write this body to the given {@link OutputStream}.
* @param outputStream the output stream to write to
* @throws IOException in case of I/O errors
*/
void writeTo(OutputStream outputStream) throws IOException;
}
}
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