小小训练营活动

mec-biz/src/main/java/com/ym/mec/biz/service/impl/ImSendGroupMessageServiceImpl.java

@@ -96,7 +96,10 @@ public class ImSendGroupMessageServiceImpl extends BaseServiceImpl<Long, ImSendG
 
     private void send(ImSendGroupMessage messageDto) throws Exception {
 		if (Objects.equals(messageDto.getMessageType(), ImSendTypeEnum.IMG)) {
-			String content = imageToBase64(Thumbnails.of(new URL(messageDto.getFileUrl())).scale(0.5f).outputQuality(0.25f).asBufferedImage());
+			URL url = new URL(messageDto.getFileUrl());
+			String path = url.getPath();
+			String suffix = path.substring(path.lastIndexOf(".") + 1);
+			String content = imageToBase64(Thumbnails.of(url).scale(0.5f).outputQuality(0.25f).asBufferedImage(),suffix);
 			sysMessageService.batchSendImGroupMessage(content,messageDto.getSenderId(),
 					messageDto.getExtra(),messageDto.getFileUrl(),messageDto.getTargetIds().split(","));
 		} else if (Objects.equals(messageDto.getMessageType(),ImSendTypeEnum.FILE)) {
@@ -108,11 +111,11 @@ public class ImSendGroupMessageServiceImpl extends BaseServiceImpl<Long, ImSendG
 		}
 	}
 
-	public static String imageToBase64(BufferedImage bufferedImage) {
+	public static String imageToBase64(BufferedImage bufferedImage,String suffix) {
 		Base64 encoder = new Base64();
 		ByteArrayOutputStream baos = new ByteArrayOutputStream();
 		try {
-			ImageIO.write(bufferedImage, "jpg", baos);
+			ImageIO.write(bufferedImage, suffix, baos);
 		} catch (IOException e) {
 			e.printStackTrace();
 		}