/*
* Copyright 2002-2014 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
*
* http://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.integration.http.multipart;
import java.io.File;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.multipart.MultipartFile;
/**
* {@link MultipartFileReader} implementation that copies the MulitpartFile's
* content to a new temporary File in the specified directory. If no directory
* is provided, the Files will be created in the default temporary directory.
*
* @author Mark Fisher
* @since 2.0
*/
public class FileCopyingMultipartFileReader implements MultipartFileReader<MultipartFile> {
private static final Log logger = LogFactory.getLog(FileCopyingMultipartFileReader.class);
private final File directory;
private volatile String prefix = "si_";
private volatile String suffix = ".tmp";
/**
* Create a {@link FileCopyingMultipartFileReader} that creates temporary
* Files in the default temporary directory.
*/
public FileCopyingMultipartFileReader() {
this(null);
}
/**
* Create a {@link FileCopyingMultipartFileReader} that creates temporary
* Files in the given directory.
*
* @param directory The directory.
*/
public FileCopyingMultipartFileReader(File directory) {
this.directory = directory;
}
/**
* Specify the prefix to use for temporary files.
*
* @param prefix The prefix.
*/
public void setPrefix(String prefix) {
this.prefix = prefix;
}
/**
* Specify the suffix to use for temporary files.
*
* @param suffix The suffix.
*/
public void setSuffix(String suffix) {
this.suffix = suffix;
}
@Override
public MultipartFile readMultipartFile(MultipartFile multipartFile) throws IOException {
File upload = File.createTempFile(this.prefix, this.suffix, this.directory);
multipartFile.transferTo(upload);
UploadedMultipartFile uploadedMultipartFile = new UploadedMultipartFile(upload, multipartFile.getSize(),
multipartFile.getContentType(), multipartFile.getName(), multipartFile.getOriginalFilename());
if (logger.isDebugEnabled()) {
logger.debug("copied uploaded file [" + multipartFile.getOriginalFilename() +
"] to [" + upload.getAbsolutePath() + "]");
}
return uploadedMultipartFile;
}
}