org.dromara.hutool.swing.img.ImgMetaUtil Maven / Gradle / Ivy
/*
* Copyright (c) 2013-2024 Hutool Team and hutool.cn
*
* 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.dromara.hutool.swing.img;
import org.dromara.hutool.core.exception.HutoolException;
import org.dromara.hutool.core.io.IORuntimeException;
import com.drew.imaging.ImageMetadataReader;
import com.drew.imaging.ImageProcessingException;
import com.drew.metadata.Directory;
import com.drew.metadata.Metadata;
import com.drew.metadata.Tag;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
/**
* 图片元信息工具类
* 借助metadata-extractor完成图片元信息的读取，如旋转角度等问题
*
* @author wdz
* @since 6.0.0
*/
public class ImgMetaUtil {
/**
* 获取图片文件旋转角度
*
* @param file 上传图片
* @return 旋转角度
* @throws IORuntimeException IO异常
*/
public static int getOrientation(final File file) throws IORuntimeException {
final Metadata metadata;
try {
metadata = ImageMetadataReader.readMetadata(file);
} catch (final ImageProcessingException e) {
throw new HutoolException(e);
} catch (final IOException e) {
throw new IORuntimeException(e);
}
return getOrientation(metadata);
}
/**
* 获取图片旋转角度
*
* @param in 图片流
* @return 旋转角度
* @throws IORuntimeException IO异常
*/
public static int getOrientation(final InputStream in) throws IORuntimeException {
final Metadata metadata;
try {
metadata = ImageMetadataReader.readMetadata(in);
} catch (final ImageProcessingException e) {
throw new HutoolException(e);
} catch (final IOException e) {
throw new RuntimeException(e);
}
return getOrientation(metadata);
}
/**
* 获取旋转角度
* @param metadata {@link Metadata}
* @return 旋转角度，可能为90,180,270
*/
private static int getOrientation(final Metadata metadata) {
for (final Directory directory : metadata.getDirectories()) {
for (final Tag tag : directory.getTags()) {
if ("Orientation".equals(tag.getTagName())) {
final String orientation = tag.getDescription();
if (orientation.contains("90")) {
return 90;
} else if (orientation.contains("180")) {
return 180;
} else if (orientation.contains("270")) {
return 270;
}
}
}
}
return 0;
}
}