fixes #25

src/components/Editor/index.js

    */
   handleUpload({ uid, path }) {
     const { fileMap } = this.state;
+    let { fileList } = this.state;
     fileMap[uid] = path;
-    this.setState({ fileMap });
+    fileList = fileList.map(item => {
+      if (item.uid === uid) {
+        item.thumbUrl = OSS_LINK + path;
+      }
+      return item;
+    });
+    this.setState({ fileMap, fileList });
   }
 
   /**