update

server/src/main/java/cn/keking/service/FileHandlerService.java

@@ -256,7 +256,7 @@ public class FileHandlerService {
             } catch (UnsupportedEncodingException e) {
                 e.printStackTrace();
             }
-        }else {
+        }else if (!url.startsWith("file://")) {
             url = Objects.requireNonNull(WebUtils.encodeUrlFileName(url))
                     .replaceAll("\\+", "%20")
                     .replaceAll("%3A", ":")

server/src/main/java/cn/keking/utils/DownloadUtils.java

@@ -14,6 +14,8 @@ import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.net.URL;
+import java.net.URLDecoder;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
 import java.util.UUID;
@@ -153,7 +155,8 @@ public class DownloadUtils {
 
     // 处理file协议的文件下载
     private static void handleFileProtocol(URL url, String targetPath) throws IOException {
-        File sourceFile = new File(url.getPath());
+        String path = URLDecoder.decode(url.getPath(), StandardCharsets.UTF_8);
+        File sourceFile = new File(path);
         if (!sourceFile.exists()) {
             throw new FileNotFoundException("本地文件不存在: " + url.getPath());
         }