spring FilePart 源码
spring FilePart 代码
文件路径：/spring-web/src/main/java/org/springframework/http/codec/multipart/FilePart.java
/*
* Copyright 2002-2021 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.codec.multipart;
import java.io.File;
import java.nio.file.Path;
import reactor.core.publisher.Mono;
/**
* Specialization of {@link Part} that represents an uploaded file received in
* a multipart request.
*
* @author Rossen Stoyanchev
* @author Juergen Hoeller
* @since 5.0
*/
public interface FilePart extends Part {
/**
* Return the original filename in the client's filesystem.
* <p><strong>Note:</strong> Please keep in mind this filename is supplied
* by the client and should not be used blindly. In addition to not using
* the directory portion, the file name could also contain characters such
* as ".." and others that can be used maliciously. It is recommended to not
* use this filename directly. Preferably generate a unique one and save
* this one somewhere for reference, if necessary.
* @return the original filename, or the empty String if no file has been chosen
* in the multipart form, or {@code null} if not defined or not available
* @see <a href="https://tools.ietf.org/html/rfc7578#section-4.2">RFC 7578, Section 4.2</a>
* @see <a href="https://owasp.org/www-community/vulnerabilities/Unrestricted_File_Upload">Unrestricted File Upload</a>
*/
String filename();
/**
* Convenience method to copy the content of the file in this part to the
* given destination file. If the destination file already exists, it will
* be truncated first.
* <p>The default implementation delegates to {@link #transferTo(Path)}.
* @param dest the target file
* @return completion {@code Mono} with the result of the file transfer,
* possibly {@link IllegalStateException} if the part isn't a file
* @see #transferTo(Path)
*/
default Mono<Void> transferTo(File dest) {
return transferTo(dest.toPath());
}
/**
* Convenience method to copy the content of the file in this part to the
* given destination file. If the destination file already exists, it will
* be truncated first.
* @param dest the target file
* @return completion {@code Mono} with the result of the file transfer,
* possibly {@link IllegalStateException} if the part isn't a file
* @since 5.1
* @see #transferTo(File)
*/
Mono<Void> transferTo(Path dest);
}
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