增加OFD功能

server/src/main/java/cn/keking/service/impl/OfdFilePreviewImpl.java

@@ -0,0 +1,27 @@
+package cn.keking.service.impl;
+
+import cn.keking.model.FileAttribute;
+import cn.keking.service.FilePreview;
+import org.springframework.stereotype.Service;
+import org.springframework.ui.Model;
+
+/**
+ * ofd 图片文件处理
+ * @author kl (http://kailing.pub)
+ * @since 2021/2/8
+ */
+@Service
+public class OfdFilePreviewImpl implements FilePreview {
+
+    private final PictureFilePreviewImpl pictureFilePreview;
+
+    public OfdFilePreviewImpl(PictureFilePreviewImpl pictureFilePreview) {
+        this.pictureFilePreview = pictureFilePreview;
+    }
+
+    @Override
+    public String filePreviewHandle(String url, Model model, FileAttribute fileAttribute) {
+        pictureFilePreview.filePreviewHandle(url,model,fileAttribute);
+        return OFD_FILE_PREVIEW_PAGE;
+    }
+}