org.springframework.boot.convert.InputStreamSourceToByteArrayConverter Maven / Gradle / Ivy
/*
* Copyright 2012-2020 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.boot.convert;
import java.io.IOException;
import org.springframework.boot.origin.Origin;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.io.InputStreamSource;
import org.springframework.core.io.Resource;
import org.springframework.util.FileCopyUtils;
/**
* {@link Converter} to convert from an {@link InputStreamSource} to a {@code byte[]}.
*
* @author Phillip Webb
*/
class InputStreamSourceToByteArrayConverter implements Converter {
@Override
public byte[] convert(InputStreamSource source) {
try {
return FileCopyUtils.copyToByteArray(source.getInputStream());
}
catch (IOException ex) {
throw new IllegalStateException("Unable to read from " + getName(source), ex);
}
}
private String getName(InputStreamSource source) {
Origin origin = Origin.from(source);
if (origin != null) {
return origin.toString();
}
if (source instanceof Resource) {
return ((Resource) source).getDescription();
}
return "input stream source";
}
}