修改描述
parent
36f8af6a76
commit
473998f9ce
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@ -932,7 +932,7 @@ public class ArchivesQueryExe {
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}
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if(!ObjectUtils.isEmpty(item.getUserAvatarUrl())){
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// PictureRenderData facePicture = Pictures.ofUrl(fileUrlConfig.getPrefixUrl() + item.getUserAvatarUrl(), PictureType.JPEG).size(50, 50).style("rotation:90;").create();//网络图片地址
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PictureRenderData facePicture = ImageUtil.createWithThumbnailator(fileUrlConfig.getPrefixUrl() + item.getUserAvatarUrl(), 50, 50);
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PictureRenderData facePicture = ImageUtil.createWithThumbnailator(fileUrlConfig.getPrefixUrl() + item.getUserAvatarUrl(), 100, 100);
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itemMap.put("facePicture", facePicture);
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}
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@ -9,6 +9,7 @@ import javax.imageio.metadata.IIOMetadata;
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import javax.imageio.metadata.IIOMetadataNode;
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import javax.imageio.stream.ImageInputStream;
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import java.awt.*;
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import java.awt.geom.AffineTransform;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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@ -27,24 +28,21 @@ public class FixedPictureUtils {
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* @throws IOException IO异常
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*/
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public static PictureRenderData ofNormalUrl(String imgUrl, int width, int height) throws IOException {
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// 1. 从URL读取图片字节（纯JDK8原生）
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byte[] imgBytes = readBytesFromUrl(imgUrl);
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// 2. 修复图片旋转（核心：移除containsTree()依赖）
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byte[] fixedImgBytes = fixImageRotationForJdk8(imgBytes);
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// 3. 构建PictureRenderData（使用ofBytes方法）
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byte[] fixedImgBytes = fixImageRotation(imgBytes);
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return Pictures.ofBytes(fixedImgBytes)
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.size(width, height)
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.create();
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}
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/**
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* JDK8原生：从URL读取字节数组（无第三方依赖）
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* JDK 8原生：从URL读取字节数组（无第三方依赖）
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*/
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private static byte[] readBytesFromUrl(String url) throws IOException {
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URL picUrl = new URL(url);
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try (InputStream is = picUrl.openStream();
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ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
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byte[] buffer = new byte[1024];
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byte[] buffer = new byte[4096];
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int len;
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while ((len = is.read(buffer)) != -1) {
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baos.write(buffer, 0, len);
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@ -54,101 +52,141 @@ public class FixedPictureUtils {
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}
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/**
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* 核心：修复图片EXIF旋转（移除containsTree()依赖）
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* 核心：修复图片旋转（JDK 8兼容）
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*/
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private static byte[] fixImageRotationForJdk8(byte[] imageBytes) throws IOException {
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private static byte[] fixImageRotation(byte[] imageBytes) throws IOException {
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// 1. 解析EXIF旋转角度
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int rotation = getExifRotation(imageBytes);
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// 2. 兜底检测：无EXIF时自动判断
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if (rotation == 0) {
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rotation = detectImageOrientation(imageBytes);
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}
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// 3. 无需旋转则返回原字节
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if (rotation == 0) {
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return imageBytes;
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}
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// 4. 读取并旋转图片
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BufferedImage original = readImage(imageBytes);
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BufferedImage rotated = rotateImage(original, rotation);
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// 5. 转为字节返回
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try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
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String format = getImageFormat(imageBytes);
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ImageIO.write(rotated, format, baos);
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return baos.toByteArray();
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}
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}
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/**
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* JDK 8兼容：解析EXIF旋转角度（替换switch表达式）
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*/
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private static int getExifRotation(byte[] imageBytes) {
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try (ByteArrayInputStream bais = new ByteArrayInputStream(imageBytes);
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ImageInputStream iis = ImageIO.createImageInputStream(bais)) {
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// 获取图片读取器
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Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);
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if (!readers.hasNext()) {
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return imageBytes; // 无读取器，返回原字节
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return 0;
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}
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ImageReader reader = readers.next();
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reader.setInput(iis, true);
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// 1. 获取旋转角度（绕开containsTree()）
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int rotation = getExifRotationWithoutContainsTree(reader);
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if (rotation == 0) {
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reader.dispose();
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return imageBytes; // 无需旋转，直接返回
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}
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// 2. 读取原始图片
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BufferedImage original = reader.read(0);
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reader.dispose();
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// 3. 旋转图片
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BufferedImage rotated = rotateImageForJdk8(original, rotation);
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// 4. 转为字节返回
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try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
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String format = getImageFormatForJdk8(imageBytes);
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ImageIO.write(rotated, format, baos);
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return baos.toByteArray();
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}
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}
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}
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/**
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* 关键修正：绕开containsTree()，解析EXIF旋转角度
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*/
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private static int getExifRotationWithoutContainsTree(ImageReader reader) {
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try {
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IIOMetadata metadata = reader.getImageMetadata(0);
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String exifFormat = "javax_imageio_jpeg_image_1.0";
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int rotation = 0;
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// 直接尝试获取元数据树，不先判断containsTree()
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// 捕获异常即可，无需提前检查
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Object metadataTree;
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try {
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metadataTree = metadata.getAsTree(exifFormat);
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} catch (IllegalArgumentException e) {
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// 不支持该格式，返回0度
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return 0;
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// 尝试所有支持的EXIF格式
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String[] formats = {"javax_imageio_jpeg_image_1.0", "javax_imageio_tiff_image_1.0"};
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for (String format : formats) {
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try {
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IIOMetadataNode root = (IIOMetadataNode) metadata.getAsTree(format);
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rotation = parseOrientationFromMetadata(root);
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if (rotation != 0) {
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break;
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}
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} catch (Exception e) {
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continue;
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}
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}
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if (!(metadataTree instanceof IIOMetadataNode)) {
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return 0;
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}
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IIOMetadataNode root = (IIOMetadataNode) metadataTree;
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IIOMetadataNode exifNode = getChildNodeForJdk8(root, "app0JFIF");
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if (exifNode == null) {
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exifNode = getChildNodeForJdk8(root, "exif");
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}
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if (exifNode == null) return 0;
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// 解析Orientation参数
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String orientation = exifNode.getAttribute("Orientation");
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if (orientation == null || orientation.trim().isEmpty()) return 0;
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int ori = Integer.parseInt(orientation);
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switch (ori) {
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case 3: return 180;
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case 6: return 90;
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case 8: return 270;
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default: return 0;
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}
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reader.dispose();
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return rotation;
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} catch (Exception e) {
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// 任何异常都返回0度（比如元数据解析失败）
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return 0;
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}
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}
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/**
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* JDK8适配：获取XML子节点
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* JDK 8兼容：解析Orientation（使用switch语句）
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*/
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private static IIOMetadataNode getChildNodeForJdk8(IIOMetadataNode parent, String name) {
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private static int parseOrientationFromMetadata(IIOMetadataNode root) {
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IIOMetadataNode node = findNodeRecursive(root, "Orientation");
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if (node == null) {
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return 0;
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}
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String orientation = node.getAttribute("value");
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if (orientation == null || orientation.isEmpty()) {
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orientation = node.getTextContent();
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}
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if (orientation == null || orientation.isEmpty()) {
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return 0;
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}
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int ori = Integer.parseInt(orientation);
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// JDK 8支持的switch语句（替换表达式）
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int rotation = 0;
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switch (ori) {
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case 1:
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rotation = 0;
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break;
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case 2:
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rotation = 0;
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break;
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case 3:
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rotation = 180;
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break;
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case 4:
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rotation = 180;
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break;
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case 5:
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rotation = 90;
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break;
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case 6:
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rotation = 90;
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break;
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case 7:
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rotation = 270;
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break;
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case 8:
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rotation = 270;
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break;
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default:
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rotation = 0;
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break;
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}
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return rotation;
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}
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/**
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* JDK 8兼容：递归查找节点
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*/
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private static IIOMetadataNode findNodeRecursive(IIOMetadataNode parent, String nodeName) {
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if (parent.getNodeName().equals(nodeName)) {
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return parent;
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}
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for (int i = 0; i < parent.getLength(); i++) {
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Object item = parent.item(i);
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if (item instanceof IIOMetadataNode) {
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IIOMetadataNode node = (IIOMetadataNode) item;
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if (name.equals(node.getNodeName())) {
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return node;
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IIOMetadataNode child = (IIOMetadataNode) item;
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IIOMetadataNode found = findNodeRecursive(child, nodeName);
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if (found != null) {
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return found;
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}
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}
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}
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@ -156,43 +194,109 @@ public class FixedPictureUtils {
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}
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/**
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* JDK8适配：旋转图片（解决JDK8 Graphics2D兼容问题）
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* JDK 8兼容：自动检测图片方向（兜底方案）
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*/
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private static BufferedImage rotateImageForJdk8(BufferedImage img, int angle) {
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private static int detectImageOrientation(byte[] imageBytes) {
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try {
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BufferedImage img = readImage(imageBytes);
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if (img.getHeight() > img.getWidth() && (double) img.getHeight() / img.getWidth() > 1.2) {
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return 90;
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}
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return 0;
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} catch (Exception e) {
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return 0;
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}
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}
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/**
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* JDK 8兼容：读取图片
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*/
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private static BufferedImage readImage(byte[] imageBytes) throws IOException {
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try (ByteArrayInputStream bais = new ByteArrayInputStream(imageBytes)) {
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return ImageIO.read(bais);
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}
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}
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/**
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* JDK 8兼容：旋转图片（简化AffineTransform）
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*/
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private static BufferedImage rotateImage(BufferedImage img, int angle) {
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int width = img.getWidth();
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int height = img.getHeight();
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// 计算旋转后的画布尺寸
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int newWidth = (angle % 180 == 0) ? width : height;
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int newHeight = (angle % 180 == 0) ? height : width;
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// 计算旋转后的尺寸
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int newWidth = width;
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int newHeight = height;
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if (angle == 90 || angle == 270) {
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newWidth = height;
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newHeight = width;
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}
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// JDK8兼容：创建BufferedImage（避免透明通道问题）
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// JDK 8兼容的AffineTransform使用方式
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AffineTransform transform = new AffineTransform();
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transform.translate(newWidth / 2.0, newHeight / 2.0);
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transform.rotate(Math.toRadians(angle));
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transform.translate(-width / 2.0, -height / 2.0);
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// 创建旋转后的图片（JDK 8兼容的类型）
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BufferedImage rotated = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
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Graphics2D g2d = rotated.createGraphics();
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// 抗锯齿，避免旋转后模糊（JDK8必须）
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// JDK 8支持的渲染参数
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
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g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
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// 旋转图片
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g2d.rotate(Math.toRadians(angle), newWidth / 2.0, newHeight / 2.0);
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g2d.drawImage(img, (newWidth - width) / 2, (newHeight - height) / 2, null);
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// 绘制旋转后的图片
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g2d.drawImage(img, transform, null);
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g2d.dispose();
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return rotated;
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}
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/**
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* JDK8适配：识别图片格式（jpg/png）
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* JDK 8兼容：识别图片格式
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*/
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private static String getImageFormatForJdk8(byte[] imageBytes) {
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if (imageBytes.length < 4) return "jpg";
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// JDK8字节判断，兼容所有系统
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if (imageBytes[0] == (byte)0xFF && imageBytes[1] == (byte)0xD8) {
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private static String getImageFormat(byte[] imageBytes) {
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if (imageBytes.length < 8) {
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return "jpg";
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} else if (imageBytes[0] == (byte)0x89 && imageBytes[1] == (byte)0x50) {
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}
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// JPG
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if (imageBytes[0] == (byte) 0xFF && imageBytes[1] == (byte) 0xD8) {
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return "jpg";
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}
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// PNG
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else if (imageBytes[0] == (byte) 0x89 && imageBytes[1] == (byte) 0x50
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&& imageBytes[2] == (byte) 0x4E && imageBytes[3] == (byte) 0x47) {
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return "png";
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}
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// WEBP
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else if (imageBytes[0] == (byte) 0x52 && imageBytes[1] == (byte) 0x49
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&& imageBytes[2] == (byte) 0x46 && imageBytes[3] == (byte) 0x46) {
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return "webp";
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}
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// BMP
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else if (imageBytes[0] == (byte) 0x42 && imageBytes[1] == (byte) 0x4D) {
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return "bmp";
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}
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return "jpg";
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}
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// -------------------- 应急方法：手动指定旋转角度 --------------------
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/**
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* 手动指定旋转角度（JDK 8兼容）
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*/
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public static PictureRenderData ofNormalUrlWithRotate(String imgUrl, int width, int height, int rotateAngle) throws IOException {
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byte[] imgBytes = readBytesFromUrl(imgUrl);
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BufferedImage original = readImage(imgBytes);
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BufferedImage rotated = rotateImage(original, rotateAngle);
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try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
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ImageIO.write(rotated, "jpg", baos);
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return Pictures.ofBytes(baos.toByteArray())
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.size(width, height)
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.create();
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}
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}
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}
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