修复知识库文件解析和删除异常

qiming-backend/app-platform-modules/app-platform-file/app-platform-file-application/src/main/java/com/xspaceagi/file/application/service/impl/FileAccessServiceImpl.java

@@ -12,8 +12,11 @@ import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 
+import java.io.IOException;
+import java.io.InputStream;
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.net.URLConnection;
 import java.util.Objects;
 import java.util.UUID;
 
@@ -150,6 +153,26 @@ public class FileAccessServiceImpl implements IFileAccessService {
         }
     }
 
+    @Override
+    public InputStream openFileStream(String fileUrl) throws IOException {
+        String fileKey = extractFileKeyFromUrl(fileUrl);
+        if (StringUtils.isNotBlank(fileKey)) {
+            FileRecordDomain fileRecord = fileManagementService.getFileByKey(fileKey);
+            if (fileRecord != null) {
+                try {
+                    return fileManagementService.downloadFile(fileKey);
+                } catch (RuntimeException e) {
+                    throw new IOException("Failed to open stored file: " + fileKey, e);
+                }
+            }
+        }
+
+        URLConnection connection = new URL(fileUrl).openConnection();
+        connection.setConnectTimeout(5000);
+        connection.setReadTimeout(30000);
+        return connection.getInputStream();
+    }
+
     private static String getUrlPath(String fileUrl) throws MalformedURLException {
         URL url;
         url = new URL(fileUrl);
@@ -172,4 +195,20 @@ public class FileAccessServiceImpl implements IFileAccessService {
 
         return null;
     }
+
+    private String extractFileKeyFromUrl(String fileUrl) {
+        if (StringUtils.isBlank(fileUrl)) {
+            return null;
+        }
+        int apiIndex = fileUrl.indexOf("/api/f/");
+        if (apiIndex < 0) {
+            return null;
+        }
+        String fileKey = fileUrl.substring(apiIndex + "/api/f/".length());
+        int queryIndex = fileKey.indexOf('?');
+        if (queryIndex >= 0) {
+            fileKey = fileKey.substring(0, queryIndex);
+        }
+        return StringUtils.isBlank(fileKey) ? null : fileKey;
+    }
 }