diff --git a/app/Console/Commands/AutoSchoolmate.php b/app/Console/Commands/AutoSchoolmate.php
index 1fc7cbd..29ec123 100755
--- a/app/Console/Commands/AutoSchoolmate.php
+++ b/app/Console/Commands/AutoSchoolmate.php
@@ -68,8 +68,12 @@ class AutoSchoolmate extends Command
             }
 
             // 只更新还不是校友的学员，避免重复处理
+            // 注意：is_schoolmate != 1 不会匹配 NULL 值，需要显式包含 NULL
             $updated = User::whereIn('id', $courseSigns->pluck('user_id'))
-                ->where('is_schoolmate', '!=', 1)
+                ->where(function ($query) {
+                    $query->where('is_schoolmate', '!=', 1)
+                        ->orWhereNull('is_schoolmate');
+                })
                 //->where('is_black',0)
                 ->update(['is_schoolmate' => 1]);
 
diff --git a/app/Console/Commands/UpdateUserNo.php b/app/Console/Commands/UpdateUserNo.php
index 4984525..10f24ad 100755
--- a/app/Console/Commands/UpdateUserNo.php
+++ b/app/Console/Commands/UpdateUserNo.php
@@ -57,42 +57,62 @@ class UpdateUserNo extends Command
     protected function updateUserNo()
     {
         $this->info('开始更新学号...');
-        // 已经开始的课程日期（所有历史数据处理）
-//        $dateList = Course::whereNotNull('start_date')
-//            ->where('start_date', '<=', date('Y-m-d'))
-//            ->orderBy('start_date')
-//            ->groupBy('start_date')
-//            ->pluck('start_date')
-//            ->toArray();
-        // 当日数据处理(日常定时任务)
-        $dateList = [date('Y-m-d')];
-        foreach ($dateList as $date) {
-            $courses = Course::with([
-                'courseSigns' => function ($query) {
-                    $query->where('status', 1);
-                }
-            ])->where('start_date', $date)
-                ->whereNotNull('student_prefix')
-                ->orderBy('start_date')
-                ->get();
+        $today = date('Y-m-d');
+
+        // 获取所有已开始且有学号前缀的课程
+        $courses = Course::with([
+            'courseSigns' => function ($query) {
+                $query->where('status', 1);
+            }
+        ])->whereNotNull('start_date')
+            ->where('start_date', '<=', $today)
+            ->whereNotNull('student_prefix')
+            ->orderBy('start_date')
+            ->get();
+
+        $totalUpdated = 0;
+        foreach ($courses as $course) {
             $i = 1;
             // 编号前缀
-            foreach ($courses as $course) {
-                foreach ($course->courseSigns as $sign) {
-                    $user = User::find($sign->user_id);
-                    if ($user->no) {
-                        continue;
-                    }
-                    $no = $course->student_prefix . str_pad($i, 3, '0', STR_PAD_LEFT);
-                    // 更新用户编号
-                    $user->no = $no;
-                    $user->save();
-                    $this->info('学号: ' . $no);
+            foreach ($course->courseSigns as $sign) {
+                $user = User::find($sign->user_id);
+                // 只要用户没有学号（包括 null 和空字符串），都需要更新
+                if ($user->no) {
+                    continue;
+                }
+
+                // 生成学号，如果已存在则顺位+1继续尝试
+                $baseNo = $course->student_prefix . str_pad($i, 3, '0', STR_PAD_LEFT);
+                $no = $baseNo;
+                $attempt = 0;
+                $maxAttempts = 1000; // 防止无限循环
+
+                // 检查学号是否已存在，如果存在则顺位+1继续尝试
+                while (User::where('no', $no)->where('id', '!=', $user->id)->exists() && $attempt < $maxAttempts) {
                     $i++;
+                    $no = $course->student_prefix . str_pad($i, 3, '0', STR_PAD_LEFT);
+                    $attempt++;
+                }
+
+                if ($attempt >= $maxAttempts) {
+                    $this->warn('课程: ' . ($course->name ?? $course->id) . ', 用户: ' . ($user->name ?? $user->id) . ' 无法生成唯一学号，跳过');
+                    continue;
+                }
+
+                // 更新用户编号
+                $user->no = $no;
+                $user->save();
+
+                if ($no != $baseNo) {
+                    $this->info('课程: ' . ($course->name ?? $course->id) . ', 原学号: ' . $baseNo . ' 已存在，使用: ' . $no . ', 用户: ' . ($user->name ?? $user->id));
+                } else {
+                    $this->info('课程: ' . ($course->name ?? $course->id) . ', 学号: ' . $no . ', 用户: ' . ($user->name ?? $user->id));
                 }
+                $i++;
+                $totalUpdated++;
             }
         }
-        $this->info('学号更新完成');
+        $this->info('学号更新完成，共更新 ' . $totalUpdated . ' 个学号');
     }
 
     /**
diff --git a/app/Http/Controllers/Admin/CompanyController.php b/app/Http/Controllers/Admin/CompanyController.php
index b8510e4..ce6e261 100644
--- a/app/Http/Controllers/Admin/CompanyController.php
+++ b/app/Http/Controllers/Admin/CompanyController.php
@@ -72,14 +72,19 @@ class CompanyController extends BaseController
                 $directions = explode(',', $direction);
                 foreach ($directions as $dir) {
                     $dir = trim($dir);
-                    if (!empty($dir)) {
+                    // 去除空数据：空字符串、null、只包含空白字符的字符串、类似"[]"的数组字符串
+                    if (!empty($dir) && $dir !== '' && $dir !== null && $dir !== '[]') {
                         $allDirections[] = $dir;
                     }
                 }
             }
         }
-        // 去重并重新索引
-        $directions = array_values(array_unique($allDirections));
+        // 去重并重新索引，再次过滤空数据
+        $directions = array_values(array_unique(array_filter($allDirections, function ($item) {
+            $trimmed = trim($item);
+            // 过滤空字符串、null、只包含空白字符、类似"[]"的数组字符串
+            return !empty($trimmed) && $trimmed !== '' && $trimmed !== '[]';
+        })));
         // 排序
         sort($directions);