1.XLS无法预览的问题

src/main/webapp/HG/WD/HGWD002A1.js

@@ -61,12 +61,12 @@ function previewFile(docId, docType, docName) {
 	$("#descDiv").css('display', 'none');
 	if (isXml(docType)) {
 		previewXml(docId);
+	} else if (isExcel(docType)) {
+		previewExcel(docId);
 	} else if (true) {
 		previewOnline(docId, docName);
 	} else if (isText(docType)) {
 		previewText(docId);
-	} else if (isExcel(docType)) {
-		previewExcel(docId);
 	} else if (isWord(docType)) {
 		previewDocx(docId);
 	} else if (isImage(docType)) {
@@ -167,7 +167,7 @@ function isExcel(docType) {
 	if (isBlank(docType)) {
 		return false;
 	}
-	const extensions = ['xls', 'xlsx'];
+	const extensions = ['xls'];
 	return extensions.includes(docType.toLowerCase());
 }