feat(ImageUtil): 添加图片压缩方向处理功能

ruoyi-modules/Sis/pom.xml

@@ -140,6 +140,12 @@
             <version>3.0.0</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.drewnoakes</groupId>
+            <artifactId>metadata-extractor</artifactId>
+            <version>2.18.0</version>
+        </dependency>
+
         <dependency>
             <groupId>net.java.dev.jna</groupId>
             <artifactId>jna</artifactId>

ruoyi-modules/Sis/src/main/java/org/dromara/sis/sdk/e8/utils/ImageUtil.java

@@ -1,17 +1,21 @@
 package org.dromara.sis.sdk.e8.utils;
 
+import com.drew.imaging.ImageMetadataReader;
+import com.drew.imaging.ImageProcessingException;
+import com.drew.metadata.Metadata;
+import com.drew.metadata.MetadataException;
+import com.drew.metadata.exif.ExifIFD0Directory;
 import org.springframework.stereotype.Component;
 
-import javax.imageio.IIOImage;
-import javax.imageio.ImageIO;
-import javax.imageio.ImageWriteParam;
-import javax.imageio.ImageWriter;
+import javax.imageio.*;
+import javax.imageio.stream.ImageInputStream;
 import javax.imageio.stream.MemoryCacheImageOutputStream;
 import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.util.Iterator;
 
 /**
  * @author lsm
@@ -22,7 +26,8 @@ import java.io.IOException;
 public class ImageUtil {
 
     public byte[] compressImageToRequirements(byte[] imageData) throws IOException {
-        BufferedImage image = ImageIO.read(new ByteArrayInputStream(imageData));
+        // 读取图片并处理方向
+        BufferedImage image = readAndFixOrientation(imageData);
 
         // 第一步：调整分辨率（不超过1000x1000）
         if (image.getWidth() > 1000 || image.getHeight() > 1000) {
@@ -91,6 +96,124 @@ public class ImageUtil {
         return resizedImage;
     }
 
+    /**
+     * 读取图片并处理 EXIF 方向信息
+     */
+    private BufferedImage readAndFixOrientation(byte[] imageData) throws IOException {
+        try {
+            // 使用 metadata-extractor 读取 EXIF 方向信息
+            Metadata metadata = ImageMetadataReader.readMetadata(new ByteArrayInputStream(imageData));
+            ExifIFD0Directory directory = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
+
+            int orientation = 1; // 默认正常方向
+            if (directory != null && directory.containsTag(ExifIFD0Directory.TAG_ORIENTATION)) {
+                orientation = directory.getInt(ExifIFD0Directory.TAG_ORIENTATION);
+            }
+
+            // 读取图片
+            ImageInputStream input = ImageIO.createImageInputStream(new ByteArrayInputStream(imageData));
+            Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
+
+            if (!readers.hasNext()) {
+                throw new IOException("No ImageReader found for image data");
+            }
+
+            ImageReader reader = readers.next();
+            reader.setInput(input);
+            BufferedImage image = reader.read(0);
+            reader.dispose();
+
+            // 根据方向信息旋转图片
+            return rotateImageAccordingToOrientation(image, orientation);
+        } catch (ImageProcessingException e) {
+            throw new IOException("Failed to process image metadata", e);
+        } catch (MetadataException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    /**
+     * 根据方向信息旋转图片
+     */
+    private BufferedImage rotateImageAccordingToOrientation(BufferedImage image, int orientation) {
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        return switch (orientation) {
+            case 1 -> // 正常
+                image;
+            case 2 -> // 水平翻转
+                flipImage(image, true, false);
+            case 3 -> // 旋转180度
+                rotateImage(image, 180);
+            case 4 -> // 垂直翻转
+                flipImage(image, false, true);
+            case 5 -> {
+                image = flipImage(image, true, false);
+                yield rotateImage(image, 270);
+            }
+            case 6 -> // 旋转90度
+                rotateImage(image, 90);
+            case 7 -> {
+                image = flipImage(image, true, false);
+                yield rotateImage(image, 90);
+            }
+            case 8 -> // 旋转270度
+                rotateImage(image, 270);
+            default -> image;
+        };
+    }
+
+    /**
+     * 旋转图片
+     */
+    private BufferedImage rotateImage(BufferedImage image, double degrees) {
+        double radians = Math.toRadians(degrees);
+        double sin = Math.abs(Math.sin(radians));
+        double cos = Math.abs(Math.cos(radians));
+
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        int newWidth = (int) Math.floor(width * cos + height * sin);
+        int newHeight = (int) Math.floor(height * cos + width * sin);
+
+        BufferedImage rotated = new BufferedImage(newWidth, newHeight, image.getType());
+        Graphics2D g = rotated.createGraphics();
+
+        g.translate((newWidth - width) / 2, (newHeight - height) / 2);
+        g.rotate(Math.toRadians(degrees), width / 2.0, height / 2.0);
+        g.drawRenderedImage(image, null);
+        g.dispose();
+
+        return rotated;
+    }
+
+    /**
+     * 翻转图片
+     */
+    private BufferedImage flipImage(BufferedImage image, boolean horizontal, boolean vertical) {
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        BufferedImage flipped = new BufferedImage(width, height, image.getType());
+        Graphics2D g = flipped.createGraphics();
+
+        if (horizontal && vertical) {
+            g.drawImage(image, width, height, -width, -height, null);
+        } else if (horizontal) {
+            g.drawImage(image, width, 0, -width, height, null);
+        } else if (vertical) {
+            g.drawImage(image, 0, height, width, -height, null);
+        } else {
+            g.drawImage(image, 0, 0, null);
+        }
+
+        g.dispose();
+        return flipped;
+    }
+
+
     private byte[] compressWithQuality(BufferedImage image, float quality) throws IOException {
         // 获取JPEG编码器
             ImageWriter writer = ImageIO.getImageWritersByFormatName("jpeg").next();