io.springlets.web.mvc.converters.SpringletsImageFileConverter Maven / Gradle / Ivy
/*
* Copyright 2017 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 io.springlets.web.mvc.converters;
import java.io.IOException;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.env.Environment;
import org.springframework.web.multipart.MultipartFile;
import io.springlets.data.jpa.domain.EmbeddableImage;
import io.springlets.data.jpa.domain.EmbeddableImageException;
/**
* = SpringletsImageFileConverter
*
*
* Converter that will convert the received MultipartFiles to a EmbeddableImage type
*
*
*
* This converter will be active only if the ${springlets.image.management}
* property has been registered in the {@link Environment} and if it has been setted with
* true value.
*
*
* @author Juan Carlos García at http://www.disid.com[DISID Corporation S.L.]
*/
public class SpringletsImageFileConverter implements Converter {
/**
* Transforms the received MultipartFile to a EmbeddableImage file
*/
@Override
public EmbeddableImage convert(MultipartFile source) {
try {
// First of all, obtain the content type
String contentType = source.getContentType();
// If the provided MultipartFile is an image, create a new
// Image item using the source bytes
if (contentType.startsWith("image/")) {
return new EmbeddableImage(source.getBytes());
}
} catch (IOException e) {
throw new EmbeddableImageException("Error loading image", e);
}
// If is not an image, this converter
// could not convert the provided MultipartFile
return null;
}
}