From bc2da7908a227c09e5cc7b6d8dab3e9c94b784a1 Mon Sep 17 00:00:00 2001
From: zhanghua <314079846@qq.com>
Date: 星期二, 12 十二月 2023 22:18:18 +0800
Subject: [PATCH] 图片压缩及bug修改
---
ycl-common/src/main/java/com/ycl/service/oss/impl/OssServiceImpl.java | 78 ++++++++++++++++++++++++++++++++++++--
1 files changed, 73 insertions(+), 5 deletions(-)
diff --git a/ycl-common/src/main/java/com/ycl/service/oss/impl/OssServiceImpl.java b/ycl-common/src/main/java/com/ycl/service/oss/impl/OssServiceImpl.java
index 0ec8e5a..3a24a08 100644
--- a/ycl-common/src/main/java/com/ycl/service/oss/impl/OssServiceImpl.java
+++ b/ycl-common/src/main/java/com/ycl/service/oss/impl/OssServiceImpl.java
@@ -9,12 +9,18 @@
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.InputStream;
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.ImageOutputStream;
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.*;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
+import java.util.Arrays;
import java.util.Date;
@Service
@@ -38,12 +44,20 @@
try {
// 鑾峰彇鏂囦欢鐨勫悕绉�
String fileName = "sczf/" + file.getOriginalFilename();
+ byte[] newImg = file.getBytes();
+ String originalFilename = file.getOriginalFilename();
+ String fileType = originalFilename.substring(originalFilename.lastIndexOf("."));
+ if (".png".equalsIgnoreCase(fileType) || ".jpg".equalsIgnoreCase(fileType) || ".jpeg".equalsIgnoreCase(fileType)) {
+ if (file.getSize() > 2097152) {
+ newImg = compressUnderSize(file.getBytes(), 2097152);
+ }
+ }
ObjectMetadata objectMetadata = new ObjectMetadata();
objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf("."))));
// 璋冪敤oss鐨勬柟娉曞疄鐜伴暱浼�
// 绗竴涓弬鏁� bucketName
// 绗簩涓弬鏁� 涓婁紶鍒皁ss鐨勬枃浠惰矾寰勫拰鏂囦欢鍚嶇О
- ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(file.getBytes()), objectMetadata);
+ ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(newImg), objectMetadata);
// 鍏抽棴OSSClient銆�
ossClient.shutdown();
// 鎶婁笂浼犵殑鏂囦欢璺緞杩斿洖 锛堟墜鍔ㄦ嫾鎺ワ級
@@ -58,6 +72,60 @@
// e.printStackTrace();
return null;
}
+ }
+
+ /**
+ * 鎸夌収 瀹介珮 姣斾緥鍘嬬缉
+ *
+ * @param imgIs 寰呭帇缂╁浘鐗囪緭鍏ユ祦
+ * @param scale 鍘嬬缉鍒诲害
+ * @param out 杈撳嚭
+ * @return 鍘嬬缉鍚庡浘鐗囨暟鎹�
+ * @throws IOException 鍘嬬缉鍥剧墖杩囩▼涓嚭閿�
+ */
+ public byte[] compress(byte[] srcImgData, double scale) throws IOException {
+ BufferedImage bi = ImageIO.read(new ByteArrayInputStream(srcImgData));
+ int width = (int) (bi.getWidth() * scale); // 婧愬浘瀹藉害
+ int height = (int) (bi.getHeight() * scale); // 婧愬浘楂樺害
+
+ Image image = bi.getScaledInstance(width, height, Image.SCALE_SMOOTH);
+ BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+
+ Graphics g = tag.getGraphics();
+ g.setColor(Color.RED);
+ g.drawImage(image, 0, 0, null); // 缁樺埗澶勭悊鍚庣殑鍥�
+ g.dispose();
+
+ ByteArrayOutputStream bOut = new ByteArrayOutputStream();
+ ImageIO.write(tag, "JPEG", bOut);
+
+ return bOut.toByteArray();
+ }
+
+ /**
+ * 灏嗗浘鐗囧帇缂╁埌鎸囧畾澶у皬浠ュ唴
+ *
+ * @param srcImgData 婧愬浘鐗囨暟鎹�
+ * @param maxSize 鐩殑鍥剧墖澶у皬
+ * @return 鍘嬬缉鍚庣殑鍥剧墖鏁版嵁
+ */
+ public byte[] compressUnderSize(byte[] srcImgData, long maxSize) {
+ double scale = 0.9;
+ byte[] imgData = Arrays.copyOf(srcImgData, srcImgData.length);
+
+ if (imgData.length > maxSize) {
+ do {
+ try {
+ imgData = compress(imgData, scale);
+
+ } catch (IOException e) {
+ throw new IllegalStateException("鍘嬬缉鍥剧墖杩囩▼涓嚭閿欙紝璇峰強鏃惰仈绯荤鐞嗗憳锛�", e);
+ }
+
+ } while (imgData.length > maxSize);
+ }
+
+ return imgData;
}
private byte[] readInputStream(InputStream inStream) throws Exception {
@@ -173,7 +241,7 @@
public static String getcontentType(String FilenameExtension) {
- if (FilenameExtension.equalsIgnoreCase(".mp4")||FilenameExtension.equalsIgnoreCase(".mov")) {
+ if (FilenameExtension.equalsIgnoreCase(".mp4") || FilenameExtension.equalsIgnoreCase(".mov")) {
return "video/mp4";
}
if (FilenameExtension.equalsIgnoreCase(".bmp")) {
--
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