feat: govern knowledge assets and source citations

2026-08-02 01:43:43 +08:00
parent cafb836cda
commit 699cc08050
144 changed files with 17205 additions and 453 deletions
@@ -68,6 +68,9 @@ public interface ISysOssService {
     */
    void download(Long ossId, HttpServletResponse response) throws IOException;

+    /** Streams a validated HTTP byte range for media playback. */
+    void downloadRange(Long ossId, String range, HttpServletResponse response) throws IOException;
+
    /**
     * 删除OSS对象存储
     *
@@ -34,6 +34,7 @@ import org.dromara.system.service.ISysOssService;
 import org.jetbrains.annotations.NotNull;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.http.MediaType;
+import org.springframework.http.MediaTypeFactory;
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;

@@ -184,6 +185,37 @@ public class SysOssServiceImpl implements ISysOssService, OssService {
        storage.download(sysOss.getFileName(), response.getOutputStream(), response::setContentLengthLong);
    }

+    @Override
+    public void downloadRange(Long ossId, String range, HttpServletResponse response) throws IOException {
+        SysOssVo sysOss = SpringUtils.getAopProxy(this).getById(ossId);
+        if (ObjectUtil.isNull(sysOss)) throw new ServiceException("文件数据不存在!");
+        response.setHeader("Accept-Ranges", "bytes");
+        response.setHeader("Content-Disposition", "inline");
+        response.setContentType(MediaTypeFactory.getMediaType(sysOss.getOriginalName())
+            .orElse(MediaType.APPLICATION_OCTET_STREAM).toString());
+        if (range == null || range.isBlank()) {
+            OssFactory.instance(sysOss.getService()).download(
+                sysOss.getFileName(), response.getOutputStream(), response::setContentLengthLong);
+            return;
+        }
+        if (!range.matches("bytes=\\d+-\\d*")) {
+            response.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
+            return;
+        }
+        String[] bounds = range.substring(6).split("-", -1);
+        if (!bounds[1].isEmpty() && Long.parseLong(bounds[1]) < Long.parseLong(bounds[0])) {
+            response.sendError(HttpServletResponse.SC_REQUESTED_RANGE_NOT_SATISFIABLE);
+            return;
+        }
+        response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
+        OssFactory.instance(sysOss.getService()).downloadRange(sysOss.getFileName(), range,
+            response.getOutputStream(), metadata -> {
+                response.setContentLengthLong(metadata.contentLength());
+                if (metadata.contentRange() != null) response.setHeader("Content-Range", metadata.contentRange());
+                if (metadata.contentType() != null) response.setContentType(metadata.contentType());
+            });
+    }
+
    /**
     * 上传 MultipartFile 到对象存储服务，并保存文件信息到数据库
     *