diff --git a/src/app.rs b/src/app.rs
index 35f4b1b..c9b885a 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -115,16 +115,20 @@ async fn data_handler(
                         }
 
                         // 下载图像数据并返回
-                        let url = build_url(&state.config.local_oss, &[&tile_response.storage_url])
-                            .map_err(|e| {
-                                (
+                        let segments = tile_response.storage_url.split("/");
+                        let url = match build_url(
+                            &state.config.local_oss,
+                            &segments.collect::<Vec<&str>>(),
+                        ) {
+                            Ok(url) => url.replace(".png", "_processed.png"),
+                            Err(e) => {
+                                return (
                                     StatusCode::INTERNAL_SERVER_ERROR,
                                     format!("构建URL失败: {:?}", e),
                                 )
-                                    .into_response()
-                            })
-                            .unwrap()
-                            .replace(".png", "_processed.png");
+                                    .into_response();
+                            }
+                        };
 
                         match download_image(&url).await {
                             Ok((image_data, content_type)) => {