diff --git a/app/Http/Controllers/Api/ApproveController.php b/app/Http/Controllers/Api/ApproveController.php
index 3a98a4247..909e03a48 100755
--- a/app/Http/Controllers/Api/ApproveController.php
+++ b/app/Http/Controllers/Api/ApproveController.php
@@ -3,10 +3,10 @@
 namespace App\Http\Controllers\Api;
 
 use Request;
-use Session;
 use Response;
 use Madzipper;
 use Carbon\Carbon;
+use App\Module\Down;
 use App\Models\User;
 use App\Module\Base;
 use App\Module\Doo;
@@ -925,11 +925,10 @@ class ApproveController extends AbstractController
             }
             //
             if (file_exists($zipPath)) {
-                $base64 = base64_encode(Base::array2string([
+                $key = Down::cache_encode([
                     'file' => $zipFile,
-                ]));
-                $fileUrl = Base::fillUrl('api/approve/down?key=' . urlencode($base64));
-                Session::put('approve::export:userid', $user->userid);
+                ]);
+                $fileUrl = Base::fillUrl('api/approve/down?key=' . $key);
                 WebSocketDialogMsg::sendMsg(null, $dialog->id, 'template', [
                     'type' => 'file_download',
                     'title' => '导出审批数据已完成',
@@ -983,12 +982,7 @@ class ApproveController extends AbstractController
      */
     public function down()
     {
-        $userid = Session::get('approve::export:userid');
-        if (empty($userid)) {
-            return Base::ajaxError("请求已过期，请重新导出！", [], 0, 403);
-        }
-        //
-        $array = Base::string2array(base64_decode(urldecode(Request::input('key'))));
+        $array = Down::cache_decode();
         $file = $array['file'];
         if (empty($file) || !file_exists(storage_path($file))) {
             return Base::ajaxError("文件不存在！", [], 0, 403);
diff --git a/app/Http/Controllers/Api/FileController.php b/app/Http/Controllers/Api/FileController.php
index e4c88c037..fef2b1c76 100755
--- a/app/Http/Controllers/Api/FileController.php
+++ b/app/Http/Controllers/Api/FileController.php
@@ -12,10 +12,10 @@ use App\Models\FileLink;
 use App\Models\FileUser;
 use App\Models\User;
 use App\Module\Base;
+use App\Module\Down;
 use App\Module\Timer;
 use App\Module\Ihttp;
 use Response;
-use Session;
 use Swoole\Coroutine;
 use Carbon\Carbon;
 use Redirect;
@@ -1016,14 +1016,8 @@ class FileController extends AbstractController
      */
     public function download__pack()
     {
-        $key = Request::input('key');
-        if ($key) {
-            $userid = Session::get('file::pack:userid');
-            if (empty($userid)) {
-                return Base::ajaxError("请求已过期，请重新导出！", [], 0, 403);
-            }
-            //
-            $array = Base::string2array(base64_decode(urldecode($key)));
+        if (Request::has('key')) {
+            $array = Down::cache_decode();
             $file = $array['file'];
             if (empty($file) || !file_exists(storage_path($file))) {
                 return Base::ajaxError("文件不存在！", [], 0, 403);
@@ -1091,11 +1085,10 @@ class FileController extends AbstractController
             return Base::retError('文件总大小已超过1GB，请分批下载');
         }
 
-        $base64 = base64_encode(Base::array2string([
+        $key = Down::cache_encode([
             'file' => $zipFile,
-        ]));
-        $fileUrl = Base::fillUrl('api/file/download/pack?key=' . urlencode($base64));
-        Session::put('file::pack:userid', $user->userid);
+        ]);
+        $fileUrl = Base::fillUrl('api/file/download/pack?key=' . $key);
 
         $zip = new \ZipArchive();
         Base::makeDir(dirname($zipPath));
diff --git a/app/Http/Controllers/Api/ProjectController.php b/app/Http/Controllers/Api/ProjectController.php
index 9a4fd4d47..84515e6c7 100755
--- a/app/Http/Controllers/Api/ProjectController.php
+++ b/app/Http/Controllers/Api/ProjectController.php
@@ -3,11 +3,11 @@
 namespace App\Http\Controllers\Api;
 
 use Request;
-use Session;
 use Redirect;
 use Response;
 use Madzipper;
 use Carbon\Carbon;
+use App\Module\Down;
 use App\Module\Doo;
 use App\Models\File;
 use App\Models\User;
@@ -1292,7 +1292,7 @@ class ProjectController extends AbstractController
                 ->where('project_task_users.owner', 1)
                 ->whereIn('project_task_users.userid', $userid)
                 ->betweenTime(Carbon::parse($time[0])->startOfDay(), Carbon::parse($time[1])->endOfDay(), $type);
-            $builder->orderByDesc('project_tasks.id')->chunk(100, function ($tasks) use (&$datas) {
+            $builder->orderByDesc('project_tasks.id')->chunk(100, function ($tasks) use ($doo, &$datas) {
                 /** @var ProjectTask $task */
                 foreach ($tasks as $task) {
                     $flowChanges = ProjectTaskFlowChange::whereTaskId($task->id)->get();
@@ -1446,11 +1446,10 @@ class ProjectController extends AbstractController
             }
             //
             if (file_exists($zipPath)) {
-                $base64 = base64_encode(Base::array2string([
+                $key = Down::cache_encode([
                     'file' => $zipFile,
-                ]));
-                $fileUrl = Base::fillUrl('api/project/task/down?key=' . urlencode($base64));
-                Session::put('task::export:userid', $user->userid);
+                ]);
+                $fileUrl = Base::fillUrl('api/project/task/down?key=' . $key);
                 WebSocketDialogMsg::sendMsg(null, $dialog->id, 'template', [
                     'type' => 'file_download',
                     'title' => '导出任务统计已完成',
@@ -1530,7 +1529,7 @@ class ProjectController extends AbstractController
                 ->whereNotNull('end_at')
                 ->where('end_at', '<=', Carbon::now())
                 ->orderBy('end_at')
-                ->chunk(100, function ($tasks) use (&$data) {
+                ->chunk(100, function ($tasks) use ($doo, &$data) {
                     /** @var ProjectTask $task */
                     foreach ($tasks as $task) {
                         $taskStartTime = Carbon::parse($task->start_at ?: $task->created_at)->timestamp;
@@ -1615,11 +1614,10 @@ class ProjectController extends AbstractController
             }
             //
             if (file_exists($zipPath)) {
-                $base64 = base64_encode(Base::array2string([
+                $key = Down::cache_encode([
                     'file' => $zipFile,
-                ]));
-                $fileUrl = Base::fillUrl('api/project/task/down?key=' . urlencode($base64));
-                Session::put('task::export:userid', $user->userid);
+                ]);
+                $fileUrl = Base::fillUrl('api/project/task/down?key=' . $key);
                 WebSocketDialogMsg::sendMsg(null, $dialog->id, 'template', [
                     'type' => 'file_download',
                     'title' => '导出超期任务已完成',
@@ -1661,12 +1659,7 @@ class ProjectController extends AbstractController
      */
     public function task__down()
     {
-        $userid = Session::get('task::export:userid');
-        if (empty($userid)) {
-            return Base::ajaxError("请求已过期，请重新导出！", [], 0, 403);
-        }
-        //
-        $array = Base::string2array(base64_decode(urldecode(Request::input('key'))));
+        $array = Down::cache_decode();
         $file = $array['file'];
         if (empty($file) || !file_exists(storage_path($file))) {
             return Base::ajaxError("文件不存在！", [], 0, 403);
diff --git a/app/Http/Controllers/Api/SystemController.php b/app/Http/Controllers/Api/SystemController.php
index e3ab1b480..72c386ac1 100755
--- a/app/Http/Controllers/Api/SystemController.php
+++ b/app/Http/Controllers/Api/SystemController.php
@@ -6,8 +6,8 @@ use App\Models\UserDevice;
 use App\Models\WebSocketDialog;
 use App\Models\WebSocketDialogMsg;
 use App\Module\AI;
+use App\Module\Down;
 use Request;
-use Session;
 use Response;
 use Madzipper;
 use Carbon\Carbon;
@@ -1465,11 +1465,10 @@ class SystemController extends AbstractController
             }
             //
             if (file_exists($zipPath)) {
-                $base64 = base64_encode(Base::array2string([
+                $key = Down::cache_encode([
                     'file' => $zipFile,
-                ]));
-                $fileUrl = Base::fillUrl('api/system/checkin/down?key=' . urlencode($base64));
-                Session::put('checkin::export:userid', $user->userid);
+                ]);
+                $fileUrl = Base::fillUrl('api/system/checkin/down?key=' . $key);
                 WebSocketDialogMsg::sendMsg(null, $dialog->id, 'template', [
                     'type' => 'file_download',
                     'title' => '导出签到数据已完成',
@@ -1511,12 +1510,7 @@ class SystemController extends AbstractController
      */
     public function checkin__down()
     {
-        $userid = Session::get('checkin::export:userid');
-        if (empty($userid)) {
-            return Base::ajaxError("请求已过期，请重新导出！", [], 0, 403);
-        }
-        //
-        $array = Base::string2array(base64_decode(urldecode(Request::input('key'))));
+        $array = Down::cache_decode();
         $file = $array['file'];
         if (empty($file) || !file_exists(storage_path($file))) {
             return Base::ajaxError("文件不存在！", [], 0, 403);
diff --git a/app/Module/Doo.php b/app/Module/Doo.php
index 0959d28ed..452418f90 100644
--- a/app/Module/Doo.php
+++ b/app/Module/Doo.php
@@ -25,8 +25,11 @@ class Doo
             return RequestContext::get(self::DOO_INSTANCE);
         }
 
-        $token = $token ?: Base::token();
-        $language = $language ?: Base::headerOrInput('language');
+        $request = request();
+        if ($request && method_exists($request, 'header')) {
+            $token = $token ?: Base::token();
+            $language = $language ?: Base::headerOrInput('language');
+        }
         $instance = new DooSo($token, $language);
 
         RequestContext::set(self::DOO_INSTANCE, $instance);
diff --git a/app/Module/Down.php b/app/Module/Down.php
new file mode 100644
index 000000000..538b90b67
--- /dev/null
+++ b/app/Module/Down.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace App\Module;
+
+use Request;
+use Cache;
+
+class Down
+{
+    /**
+     * @param $data
+     * @param null $ttl
+     * @return string
+     */
+    public static function cache_encode($data, $ttl = null): string
+    {
+        $base64 = base64_encode(Base::array2string($data));
+        $key = md5($base64);
+        Cache::put("down::{$key}", $base64, $ttl ?: now()->addHour());
+        return $key;
+    }
+
+    /**
+     * @param ?string $inputName
+     * @return array
+     */
+    public static function cache_decode(?string $inputName = 'key'): array
+    {
+        $key = Request::input($inputName);
+        $base64 = Cache::get("down::{$key}");
+        if (empty($base64)) {
+            return Base::ajaxError("请求已过期，请重新导出！", [], 0, 403);
+        }
+        //
+        return Base::string2array(base64_decode($base64));
+    }
+}