Fix: policy should be re-dispatch while getting thumbnails

routers/router.go

@@ -39,6 +39,8 @@ func InitSlaveRouter() *gin.Engine {
 		v3.GET("download/:speed/:path/:name", controllers.SlaveDownload)
 		// 预览 / 外链
 		v3.GET("source/:speed/:path/:name", controllers.SlavePreview)
+		// 缩略图
+		v3.GET("thumb/:path", controllers.SlaveThumb)
 		// 删除文件
 		v3.POST("delete", controllers.SlaveDelete)
 	}