diff --git a/lis-system/src/main/java/com/czlis/system/web/controller/system/SysRoleController.java b/lis-system/src/main/java/com/czlis/system/web/controller/system/SysRoleController.java
index e31e818..fc365a6 100644
--- a/lis-system/src/main/java/com/czlis/system/web/controller/system/SysRoleController.java
+++ b/lis-system/src/main/java/com/czlis/system/web/controller/system/SysRoleController.java
@@ -237,6 +237,10 @@ public class SysRoleController extends BaseController {
     @GetMapping("/getUserName")
     public AjaxResult selectUserByUserName(String username) {
         SysUser sysUser = userService.selectUserByUserName(username);
-        return AjaxResult.success(sysUser.getNickName());
+        String nickName = "";
+        if(sysUser != null) {
+            nickName = sysUser.getNickName();
+        }
+        return AjaxResult.success(nickName);
     }
 }