修改导出

lift-business-service/src/main/java/cn/com/ty/lift/business/contract/service/ContractService.java

@@ -377,7 +377,7 @@ public class ContractService extends ServiceImpl<ContractsMapper, Contracts> {
         writer.autoSizeColumnAll();
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
         String fileName = DateUtils.generateCode() + ".xlsx";
-        response.setHeader("Content-Disposition","attachment;filename="+ fileName + ".xls");
+        response.setHeader("Content-Disposition", "attachment;filename=" + fileName);
         try {
             writer.flush(response.getOutputStream());
             // 关闭writer，释放内存