更改

src/main/java/org/shop/crop/CropController.java

@@ -142,6 +142,7 @@ public class CropController {
 
         return saveData(messageList, maxSeq, config, mediaFileInfos, sdk, corpId);
     }
+
     /**
      * 异步下载待处理的媒体文件
      *
@@ -164,6 +165,7 @@ public class CropController {
                 mf.setSeq(info.getSeq());
                 mf.setCropId(corpId);
                 mf.setStatus(0);
+                mf.setExt(info.getExt());
                 return mf;
             }).collect(Collectors.toList());
 
@@ -177,13 +179,15 @@ public class CropController {
         }
         return messageList;
     }
+
     /**
      * 异步下载待处理的媒体文件
      */
     private void downloadPendingFiles(List<CropFile> mediaFiles, Long sdk) {
         for (CropFile mf : mediaFiles) {
             try {
-                String url = downFile(mf.getSdkFileId(), mf.getMsgType(),sdk);
+                String msgType = getSuffixByMsgType(mf);
+                String url = downFile(mf.getSdkFileId(), msgType, sdk);
                 if (url != null && !url.isEmpty()) {
                     mf.setUrl(url);
                     mf.setStatus(1);
@@ -201,6 +205,7 @@ public class CropController {
             }
         }
     }
+
     /**
      * 提取所有需要下载的媒体文件信息
      */
@@ -230,10 +235,17 @@ public class CropController {
                     if (msg.containsKey(msgType)) {
                         String sdkFileId = msg.getJSONObject(msgType).getString("sdkfileid");
                         if (sdkFileId != null && !sdkFileId.trim().isEmpty()) {
-                            CropFile cropFile = new CropFile(); // 注意：你写成了 CropConfig，应为 CropFile
+                            CropFile cropFile = new CropFile();
                             cropFile.setMsgType(msgType);
                             cropFile.setSeq(seq);
                             cropFile.setSdkFileId(sdkFileId);
+                            cropFile.setSeq(seq);
+                            cropFile.setExt(msgType);
+                            if (msgType.equals("file")) {
+                                String fileext = msg.getJSONObject(msgType).getString("fileext");
+                                cropFile.setExt(fileext);
+                            }
+
                             result.add(cropFile);
                         }
                     }
@@ -248,7 +260,9 @@ public class CropController {
     @GetMapping("/crop/downFile")
     public String downFile(String sdkField, String msgType, Long sdk) throws IOException {
         File tempFile = File.createTempFile(GlobalConstants.DOWNLOAD_TEMP_FILE_NAME_PREFIX,
-                getSuffixByMsgType(msgType), mediaContext.getTempMergeFileDir());
+                msgType, mediaContext.getTempMergeFileDir());
+        sdk = sdkManager.initSdk("ww64f47cd0afc456a5", "mEizahrSF6axdfWtSK_f73a3j6-sV02hhyGG7ogmTpM");
+
         String indexbuf = null; // 初始化 indexbuf
         try (FileOutputStream fileOutputStream = new FileOutputStream(tempFile)) {
             while (true) {
@@ -273,8 +287,8 @@ public class CropController {
         return "";
     }
 
-    public String getSuffixByMsgType(String msgType) {
-        switch (msgType) {
+    public String getSuffixByMsgType(CropFile cropFile) {
+        switch (cropFile.getMsgType()) {
             case "image":
                 return ".jpg";
             case "voice":
@@ -282,7 +296,7 @@ public class CropController {
             case "video":
                 return ".mp4";
             case "file":
-                return ".bin";
+                return "." + cropFile.getExt(); // 取真实后缀
             default:
                 return ".bin";
         }

src/main/java/org/shop/crop/dao/CropFile.java

@@ -23,7 +23,7 @@ public class CropFile {
 
     private String url;               // 下载后上传 OSS 的地址
 
-    private String fileName;          // 可选：原始文件名（后续可补充）
+    private String ext;          // 可选：原始文件名（后续可补充）
 
     private Integer status = 0; // 0 pending, 1 success, 2 failed