From 4aa4a9f3ddeccf7d8f05f54a127f0334b7691aaf Mon Sep 17 00:00:00 2001
From: zqy <2522236926@qq.com>
Date: 星期一, 19 一月 2026 10:59:02 +0800
Subject: [PATCH] 修改缩略图翻转问题
---
zhang-content/src/main/java/com/ruoyi/service/impl/VideoProcessService.java | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 113 insertions(+), 2 deletions(-)
diff --git a/zhang-content/src/main/java/com/ruoyi/service/impl/VideoProcessService.java b/zhang-content/src/main/java/com/ruoyi/service/impl/VideoProcessService.java
index ba24fd0..7e62948 100644
--- a/zhang-content/src/main/java/com/ruoyi/service/impl/VideoProcessService.java
+++ b/zhang-content/src/main/java/com/ruoyi/service/impl/VideoProcessService.java
@@ -1,5 +1,8 @@
package com.ruoyi.service.impl;
+import com.drew.imaging.ImageMetadataReader;
+import com.drew.metadata.Metadata;
+import com.drew.metadata.exif.ExifIFD0Directory;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.utils.StringUtils;
import lombok.extern.slf4j.Slf4j;
@@ -15,6 +18,7 @@
import javax.imageio.ImageWriter;
import javax.imageio.stream.MemoryCacheImageOutputStream;
import java.awt.*;
+import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.*;
import java.nio.file.Files;
@@ -68,18 +72,125 @@
+ /**
+ * 璇诲彇鍥剧墖骞跺鐞咵XIF鏂瑰悜
+ */
+ private BufferedImage readImageWithExifOrientation(File file) throws Exception {
+ // 璇诲彇鍘熷鍥剧墖
+ BufferedImage originalImage = ImageIO.read(file);
+ if (originalImage == null) {
+ return null;
+ }
+ // 鑾峰彇EXIF鏂瑰悜
+ int orientation = 1;
+ try {
+ orientation = getExifOrientation(file);
+ } catch (Exception e) {
+ // 濡傛灉涓嶈兘璇诲彇EXIF锛屼娇鐢ㄩ粯璁ゆ柟鍚�
+ log.warn("鏃犳硶璇诲彇EXIF鏂瑰悜淇℃伅: {}", e.getMessage());
+ }
+
+ // 鏍规嵁鏂瑰悜鏃嬭浆鍥剧墖
+ return rotateImageByExifOrientation(originalImage, orientation);
+ }
+
+ /**
+ * 鑾峰彇EXIF鏂瑰悜淇℃伅
+ */
+ private int getExifOrientation(File file) throws Exception {
+ Metadata metadata = ImageMetadataReader.readMetadata(file);
+ ExifIFD0Directory exifIFD0Directory = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
+
+ if (exifIFD0Directory != null && exifIFD0Directory.containsTag(ExifIFD0Directory.TAG_ORIENTATION)) {
+ return exifIFD0Directory.getInt(ExifIFD0Directory.TAG_ORIENTATION);
+ }
+
+ return 1; // 榛樿鏂瑰悜
+ }
+
+ /**
+ * 鏍规嵁EXIF鏂瑰悜鏃嬭浆鍥剧墖
+ */
+ private BufferedImage rotateImageByExifOrientation(BufferedImage image, int orientation) {
+ int width = image.getWidth();
+ int height = image.getHeight();
+
+ AffineTransform transform = new AffineTransform();
+
+ switch (orientation) {
+ case 1: // 姝ｅ父
+ return image;
+ case 2: // 姘村钩缈昏浆
+ transform.scale(-1, 1);
+ transform.translate(-width, 0);
+ break;
+ case 3: // 鏃嬭浆180搴�
+ transform.translate(width, height);
+ transform.rotate(Math.PI);
+ break;
+ case 4: // 鍨傜洿缈昏浆
+ transform.scale(1, -1);
+ transform.translate(0, -height);
+ break;
+ case 5: // 椤烘椂閽堟棆杞�90搴� + 姘村钩缈昏浆
+ transform.rotate(-Math.PI / 2);
+ transform.scale(-1, 1);
+ break;
+ case 6: // 椤烘椂閽堟棆杞�90搴�
+ transform.rotate(Math.PI / 2);
+ transform.translate(0, -height);
+ break;
+ case 7: // 椤烘椂閽堟棆杞�270搴� + 姘村钩缈昏浆
+ transform.rotate(Math.PI / 2);
+ transform.scale(-1, 1);
+ transform.translate(-width, 0);
+ break;
+ case 8: // 椤烘椂閽堟棆杞�270搴�
+ transform.rotate(-Math.PI / 2);
+ transform.translate(-width, 0);
+ break;
+ default:
+ return image;
+ }
+
+ // 璁＄畻鏂板浘鐗囧昂瀵�
+ double newWidth, newHeight;
+ if (orientation >= 5 && orientation <= 8) {
+ // 鏃嬭浆浜�90鎴�270搴︼紝瀹介珮浜掓崲
+ newWidth = height;
+ newHeight = width;
+ } else {
+ newWidth = width;
+ newHeight = height;
+ }
+
+ BufferedImage rotatedImage = new BufferedImage(
+ (int) Math.ceil(newWidth),
+ (int) Math.ceil(newHeight),
+ image.getType()
+ );
+
+ Graphics2D g2d = rotatedImage.createGraphics();
+ g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+ RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+
+ g2d.drawImage(image, transform, null);
+ g2d.dispose();
+
+ return rotatedImage;
+ }
/**
* 澶勭悊鍥剧墖鏂囦欢
*/
public Map<String, Object> processImage(File file, int width, int height,
- float quality, String format) throws IOException {
+ float quality, String format) throws Exception {
Map<String, Object> result = new HashMap<>();
// 璇诲彇鍥剧墖
- BufferedImage image = ImageIO.read(file);
+ BufferedImage image = readImageWithExifOrientation(file);
if (image == null) {
result.put("success", false);
result.put("message", "鏃犳硶璇诲彇鍥剧墖鏂囦欢");
--
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