diff --git a/app/Http/Controllers/Api/Images/GetController.php b/app/Http/Controllers/Api/Images/GetController.php
index 24aea02..44f3e46 100644
--- a/app/Http/Controllers/Api/Images/GetController.php
+++ b/app/Http/Controllers/Api/Images/GetController.php
@@ -25,6 +25,72 @@ public function urlbyNum(Request $oRequest)
         
         return $this->findValidUrl($sAuthorCode, $iNum, $oFlow);
     }
+    
+    public function urlbySubKey(Request $oRequest)
+    {
+        $oFlow = Flow::start("urlBySubKey");
+        
+        $sSubKey = $oRequest->input("sSubKey");
+        $iNum        = (int)$oRequest->input("iNum", 1);
+
+        $this->iStartNum = $iNum;
+        
+        return $this->findValidUrlBySubKey($sSubKey, $iNum, $oFlow);
+    }
+    
+    private function findValidUrlBySubKey($sSubKey, $iNum, $oFlow)
+    {
+        try {
+//            $oQuery = ModelArticles::where("sAuthorCode", $sAuthorCode)->orderBy("id", "asc");
+            $oQuery = ModelArticles::where("aOpt", "like", $sSubKey)->orderBy("id", "asc");
+            $iTotal = $oQuery->count();
+
+            if ($iTotal === 0) throw new \Exception("subkey:{$sSubKey} 旗下无任何记录");
+
+            // 1. 计算当前查库的偏移量，用 % 取模是最稳的，或者用 if 但不要改 iNum 本身
+            $iOffset = ($iNum - 1) % $iTotal;
+            $iTrueNum = $iOffset + 1; // 真正对应数据库的第几条
+
+            $oArticle = $oQuery->skip($iOffset)->first();
+
+            // 2. 拼文件名
+            $aThumbUse = $oArticle->aOpt["thumb_use"] ?? ["b"];
+            $sThumbUse = $aThumbUse[array_rand($aThumbUse)];
+            if ($sThumbUse == "full") {
+                $sFileName = $oArticle->sCode . '-1-' . $sThumbUse . '.jpg';
+            } else {
+                $sFileName = $oArticle->sCode . '-1-' . 'thumb_' . $sThumbUse . '.jpg';
+            }
+
+            // 3. 检查文件
+            if (!Storage::disk('upload_images')->exists($sFileName)) {
+                // 报警
+                TeleSlave::warn()->enableSlaveQueue(false)->enableAsync(false)->send("findValidUrl：图片文件不存在：{$sFileName}");
+
+                // 💡 这里的出口判定最重要！
+                // 如果尝试次数已经超过了最大限制，或者已经把库里所有的记录都扫了一遍还没找到
+                if ($iNum >= ($this->iStartNum + $this->iMaxTry) || $iNum >= ($this->iStartNum + $iTotal)) {
+                     throw new \Exception("该作者连续查找多张图片均不存在，已停止尝试");
+                }
+
+                // 递归：iNum 必须一直往上涨，不能回头！
+                return $this->findValidUrl($sSubKey, $iNum + 1, $oFlow);
+            }
+
+            // 4. 成功
+            $aData = [
+                "sFileUrl" => Storage::disk('upload_images')->url($sFileName),
+                "iTrueNum" => $iTrueNum,
+            ];
+            
+            return response()->json($oFlow->setDataA($aData)->done()->toArray());
+
+        } catch (\Exception $e) {
+            $sMsg = $e->getMessage();
+            TeleSlave::warn()->enableSlaveQueue(false)->enableAsync(false)->send($sMsg);
+            return response()->json($oFlow->fail($sMsg)->toArray());
+        }
+    }
 
     private function findValidUrl($sAuthorCode, $iNum, $oFlow)
     {
diff --git a/routes/web.php b/routes/web.php
index 749a2ef..c8cea42 100755
--- a/routes/web.php
+++ b/routes/web.php
@@ -18,4 +18,5 @@
 Route::middleware([ApiCheckToken::class])->group(function () {
     Route::post("/api/article/schema/receive", [ArticleSchemaController::class, "receive"]);
     Route::post("/api/images/get/url-by-num", [ApiImagesGetController::class, "urlByNum"]);
+    Route::post("/api/images/get/url-by-subkey", [ApiImagesGetController::class, "urlBySubKey"]);
 });