diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysOssController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysOssController.java
index 609d41fc..c7772ab9 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysOssController.java
+++ b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysOssController.java
@@ -2,6 +2,7 @@ package com.ruoyi.web.controller.system;
 
 
 import cn.hutool.core.convert.Convert;
+import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.http.HttpUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.ruoyi.common.annotation.Log;
@@ -78,7 +79,7 @@ public class SysOssController extends BaseController {
 	@RepeatSubmit
 	@PostMapping("/upload")
 	public AjaxResult<Map<String, String>> upload(@RequestPart("file") MultipartFile file) {
-		if (file.isEmpty()) {
+		if (ObjectUtil.isNull(file)) {
 			throw new ServiceException("上传文件不能为空");
 		}
 		SysOss oss = iSysOssService.upload(file);
@@ -93,7 +94,7 @@ public class SysOssController extends BaseController {
 	@GetMapping("/download/{ossId}")
 	public void download(@PathVariable Long ossId, HttpServletResponse response) throws IOException {
 		SysOss sysOss = iSysOssService.getById(ossId);
-		if (sysOss == null) {
+		if (ObjectUtil.isNull(sysOss)) {
 			throw new ServiceException("文件数据不存在!");
 		}
 		response.reset();
diff --git a/ruoyi-ui/src/utils/download.js b/ruoyi-ui/src/utils/download.js
index aeac6b5b..8f66c249 100644
--- a/ruoyi-ui/src/utils/download.js
+++ b/ruoyi-ui/src/utils/download.js
@@ -42,9 +42,11 @@ export function downLoadExcel(url, params) {
       if (value !== null && typeof(value) !== "undefined") {
         if (typeof value === 'object') {
           for (const key of Object.keys(value)) {
-            let params = propName + '[' + key + ']';
-            var subPart = encodeURIComponent(params) + "=";
-            urlparams += subPart + encodeURIComponent(value[key]) + "&";
+            if (value[key] !== null && typeof (value[key]) !== 'undefined') {
+              let params = propName + '[' + key + ']';
+              let subPart = encodeURIComponent(params) + "="
+              urlparams += subPart + encodeURIComponent(value[key]) + "&";
+            }
           }
         } else {
           urlparams += part + encodeURIComponent(value) + "&";