diff --git a/linesider_screen_bankend/linesider_screen_bankend/Controller/OnlyPrintProductLabelController.cs b/linesider_screen_bankend/linesider_screen_bankend/Controller/OnlyPrintProductLabelController.cs
index 5ff43da..336876c 100644
--- a/linesider_screen_bankend/linesider_screen_bankend/Controller/OnlyPrintProductLabelController.cs
+++ b/linesider_screen_bankend/linesider_screen_bankend/Controller/OnlyPrintProductLabelController.cs
@@ -61,7 +61,7 @@ namespace linesider_screen_bankend.Controller
                     // 使用 using 语句确保资源正确释放
                     using (var bartender = new BartenderPrintHelper())
                     {
-                        
+
                         var variables = new Dictionary<string, string>
                                         {
                                             { "partnumber", workorderInfo.Specification },
@@ -88,10 +88,16 @@ namespace linesider_screen_bankend.Controller
                     }
 
 
-                  
+
                     // 返回成功响应
                     await this.HttpContext.SendApiSuccessAsync(null);
                 }
+                else
+                {
+
+                    // 返回成功响应
+                    await this.HttpContext.SendApiFailAsync(500, "工单不在数据库");
+                }
 
             }
             catch (Exception ex)
@@ -144,11 +150,16 @@ namespace linesider_screen_bankend.Controller
                     .Where(x => x.Workorder == workorder)
                     .First();
 
-
+                if (workorderInfo == null)
+                {
+                    // 返回成功响应
+                    await this.HttpContext.SendApiFailAsync(500, "工单不在数据库");
+                    return;
+                }
                 // 使用 using 语句确保资源正确释放
                 using (var bartender = new BartenderPrintHelper())
                 {
-                    
+
                     var variables = new Dictionary<string, string>
                                         {
                                             { "partnumber", workorderInfo.Specification },
@@ -175,7 +186,7 @@ namespace linesider_screen_bankend.Controller
                 }
 
 
-             
+
                 // 返回成功响应
                 await this.HttpContext.SendApiSuccessAsync(null);
             }
@@ -206,10 +217,16 @@ namespace linesider_screen_bankend.Controller
                 ProWorkorder workorderInfo = SqlSugarHelper.Db.Queryable<ProWorkorder>()
                     .Where(x => x.Workorder == workorder)
                     .First();
+                if (workorderInfo == null)
+                {
+                    // 返回成功响应
+                    await this.HttpContext.SendApiFailAsync(500, "工单不在数据库");
+                    return;
+                }
                 // 使用 using 语句确保资源正确释放
                 using (var bartender = new BartenderPrintHelper())
                 {
-                   
+
                     var variables = new Dictionary<string, string>
                                         {
                                             { "partnumber", workorderInfo.Specification },
@@ -236,7 +253,7 @@ namespace linesider_screen_bankend.Controller
                 }
 
 
-              
+
                 // 返回成功响应
                 await this.HttpContext.SendApiSuccessAsync(null);
             }