参数处理

yzg-util-cloud/src/main/java/com/yanzuoguang/cloud/file/YzgFileConfig.java

@@ -41,6 +41,18 @@ public class YzgFileConfig {
         return displayUrl;
     }
 
+    /**
+     * 初始化视频
+     *
+     * @param serverFile
+     * @return
+     */
+    public YzgFileBaseVo init(String serverFile) {
+        YzgFileBaseVo item = new YzgFileBaseVo();
+        init(item, serverFile);
+        return item;
+    }
+
     /**
      * 初始化文件对象
      *
@@ -53,17 +65,17 @@ public class YzgFileConfig {
         item.setServer(fromUrl);
         // 对外显示全路径
         item.setDisplay(getUrl(this.getDisplayUrl(), fromUrl));
-
         // 文件全路径
         String serverFullPath = getUrl(this.getServerUrl(), fromUrl);
-
         // 获取文件大小
         File file = new File(serverFullPath);
+        if (file.exists()) {
             item.setSize(file.length());
             // 获取mime
             item.setMime(FileHelper.getMimeType(serverFullPath));
             item.setType(FileHelper.getMediaTypeByMime(item.getMime()));
         }
+    }
 
     /**
      * 获取相对路径

yzg-util-file/src/main/java/com/yanzuoguang/cloud/file/YzgFileServiceImpl.java

@@ -257,7 +257,29 @@ public class YzgFileServiceImpl implements YzgFileService {
      */
     @Override
     public void convertVideoFirst(YzgFileConvertVideoFirstReqVo req) {
+        checkFolder(req.getFrom());
+        checkFolder(req.getTo());
+
+        String fullFrom = fileConfig.getServerFullPath(req.getFrom());
+        YzgFileBaseVo fromInfo = fileConfig.init(fullFrom);
+        if (StringHelper.isEmpty(fromInfo.getMime())) {
+            throw new CodeException("来源文件不存在");
+        }
+        if (fromInfo.getType() != FileHelper.FILE_TYPE_VIDEO) {
+            throw new CodeException("来源文件不为视频");
+        }
 
+        try {
+            String fullTo = fileConfig.getServerFullPath(req.getTo());
+            File fileTo = new File(fullTo);
+            if (fileTo.exists()) {
+                fileTo.delete();
+            }
+            // 获取第一帧做为缩略图
+            MediaHelper.getVideoFirstImage(fullFrom, fullTo);
+        } catch (CodeException e) {
+            throw new CodeException("获取视频缩略图失败", e);
+        }
     }
 
     /**
@@ -304,8 +326,7 @@ public class YzgFileServiceImpl implements YzgFileService {
 
         // 来源文件路径
         String from = fileConfig.getServerFullPath(req.getFrom());
-        YzgFileBaseVo fromInfo = new YzgFileBaseVo();
-        fileConfig.init(fromInfo, from);
+        YzgFileBaseVo fromInfo = fileConfig.init(from);
         if (fromInfo.getType() != type) {
             throw new CodeException("请传入" + tag + "文件");
         }