错误处理

app/Http/Controllers/Admin/DeviceController.php

@@ -2,8 +2,10 @@
 
 namespace App\Http\Controllers\Admin;
 
+use App\Exceptions\EmqxSupportException;
 use App\Http\Controllers\Controller;
 use App\Support\EmqxSupport;
+use Illuminate\Http\Client\ConnectionException;
 use Illuminate\Http\Request;
 use Illuminate\Pagination\Paginator;
 
@@ -15,11 +17,15 @@ public function index(Request $request)
     {
         $emqx = new EmqxSupport();
 
+        try {
             $clients = $emqx->clients([
                 'clientid' => $request->client_id,
                 'username' => $request->username,
                 'page' => $request->page,
             ]);
+        } catch (EmqxSupportException|ConnectionException $e) {
+            return back()->with('error', $e->getMessage());
+        }
 
         // dd($clients);
         return view('admin.device.index', compact('clients'));

resources/views/admin/device/index.blade.php

@@ -35,6 +35,7 @@
         </thead>
         <tbody>
 
+        @if(isset($clients))
             @foreach($clients['data'] as $c)
                 <tr>
                     <td>
@@ -81,9 +82,11 @@
                     </td>
                 </tr>
             @endforeach
+        @endif
         </tbody>
     </table>
 
+    @if(isset($clients))
         <div class="d-none flex-sm-fill d-sm-flex align-items-sm-center justify-content-sm-end">
             <div>
                 <ul class="pagination">
@@ -101,5 +104,6 @@
                 </ul>
             </div>
         </div>
+    @endif
 
 @endsection