明确拒绝无效的处理图数据地址

处理图缺少 data URL 分隔符时直接返回格式错误。避免先写入空文件再在后续裁切阶段暴露误导性错误。
2026-09-10 19:03:29 +08:00
parent 5b441d389c
commit 1eb4bd5ec0
1 changed files with 5 additions and 6 deletions
@@ -248,13 +248,12 @@ async fn write_processed_image_inner(processed_url: String, target: PathBuf) ->
        processed_url.chars().count()
    );
    tokio::task::spawn_blocking(move || {
+        let encoded = processed_url
+            .split_once(',')
+            .map(|(_, data)| data)
+            .ok_or_else(|| "处理图 data URL 无效".to_string())?;
        let processed_bytes = base64::engine::general_purpose::STANDARD
-            .decode(
-                processed_url
-                    .split_once(',')
-                    .map(|(_, data)| data)
-                    .unwrap_or_default(),
-            )
+            .decode(encoded)
            .map_err(|error| format!("解析处理图失败：{error}"))?;
        let byte_len = processed_bytes.len();
        fs::write(&target, processed_bytes)