修改 图片上传压缩转换问题

pom.xml

@@ -152,6 +152,12 @@
             <version>4.2</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.drewnoakes</groupId>
+            <artifactId>metadata-extractor</artifactId>
+            <version>2.14.0</version>
+        </dependency>
+
 
     </dependencies>
 

src/main/java/org/rcisoft/app/appMemInfo/controller/AppMemInfoController.java

@@ -4,6 +4,9 @@ package org.rcisoft.app.appMemInfo.controller;
 /*固定导入*/
 
 import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.drew.imaging.ImageMetadataReader;
+import com.drew.metadata.Metadata;
+import com.drew.metadata.exif.ExifIFD0Directory;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.Parameter;
 import io.swagger.v3.oas.annotations.Parameters;
@@ -36,6 +39,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import javax.imageio.ImageIO;
 import javax.validation.Valid;
+import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -136,24 +140,28 @@ public class AppMemInfoController extends CyPaginationController<MemInfo> {
                 cyFileStorageService.filePath(file, temp, bucket));
     }
 
+    //图片压缩
     private static MultipartFile compressImage(MultipartFile file) {
         BufferedImage image = null;
         try {
             image = ImageIO.read(file.getInputStream());
-            // 设置压缩质量
-            float quality =  1.0f;
+            // 获取图像的方向信息并进行旋转调整
+            image = fixImageOrientation(file, image);
+//            // 设置压缩质量
+//            float quality =  1.0f;
             // 调整图片尺寸，设置目标宽度和高度
             int targetWidth = 800; // 目标宽度（可以根据需求调整）
             int targetHeight = 600; // 目标高度（可以根据需求调整）
 
             // 使用Imgscalr进行图像压缩（缩放）
-            BufferedImage compressedImage = Scalr.resize(image, Scalr.Method.QUALITY, targetWidth, targetHeight);
+//            BufferedImage compressedImage = Scalr.resize(image,Scalr.Method.QUALITY, Scalr.Mode.AUTOMATIC,500);
 
             // 将BufferedImage写入ByteArrayOutputStream
             ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
             String originalFilename = file.getOriginalFilename();
             String extension = originalFilename.substring(originalFilename.lastIndexOf('.') + 1).toLowerCase();
-            ImageIO.write(compressedImage, extension, outputStream); // 假设原始图片格式为jpg
+            ImageIO.write(image, extension, outputStream); // 假设原始图片格式为jpg
+
 
             // 将压缩后的图片数据转换为byte数组
             byte[] compressedImageData = outputStream.toByteArray();
@@ -167,4 +175,72 @@ public class AppMemInfoController extends CyPaginationController<MemInfo> {
         return file;
 
     }
+
+    /**
+     * 获取图像的 EXIF 方向标签
+     */
+    private static int getExifOrientation(MultipartFile file) {
+        try {
+            Metadata metadata = ImageMetadataReader.readMetadata(file.getInputStream());
+            ExifIFD0Directory directory = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
+
+            if (directory != null) {
+                Integer  orientationTag = directory.getInteger(ExifIFD0Directory.TAG_ORIENTATION);
+                if (orientationTag != null) {
+                    return orientationTag;
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return 1;  // 默认方向，无旋转
+    }
+
+    /**
+     * 旋转图像
+     */
+    private static BufferedImage rotateImage(BufferedImage image, int angle) {
+        int width = image.getWidth();
+        int height = image.getHeight();
+
+        // 计算旋转后的新宽高
+        double radians = Math.toRadians(angle);
+        int newWidth = (int) Math.abs(width * Math.cos(radians)) + (int) Math.abs(height * Math.sin(radians));
+        int newHeight = (int) Math.abs(height * Math.cos(radians)) + (int) Math.abs(width * Math.sin(radians));
+
+        // 创建一个新的图像，背景色为白色或透明
+        BufferedImage rotatedImage = new BufferedImage(newWidth, newHeight, image.getType());
+        Graphics2D g2d = rotatedImage.createGraphics();
+//        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
+//        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+//
+//        // 设置旋转中心
+        g2d.translate((newWidth - width) / 2, (newHeight - height) / 2);  // 居中
+//        g2d.rotate(radians, width / 2, height / 2);  // 旋转
+        g2d.rotate(radians, width / 2, height / 2);
+
+        // 绘制原图像
+        g2d.drawImage(image, 0, 0, null);
+        g2d.dispose();
+
+        return rotatedImage;
+    }
+
+    /**
+     * 根据 EXIF 信息修正图像方向
+     */
+    private static BufferedImage fixImageOrientation(MultipartFile file, BufferedImage image) throws IOException {
+        int orientation = getExifOrientation(file);
+
+        switch (orientation) {
+            case 3:
+                return rotateImage(image, 180);
+            case 6:
+                return rotateImage(image, 90);
+            case 8:
+                return rotateImage(image, 270);
+            default:
+                return image;  // 无需旋转
+        }
+    }
 }