fix

src/main/java/com/knowledge/base/application/service/LLMAppServiceImpl.java

@@ -29,7 +29,6 @@ public class LLMAppServiceImpl implements LLMAppService {
         try {
             FilteredSseOutputAdapter adapter = new FilteredSseOutputAdapter(emitter);
             llmServiceFactory.current().streamAnswer(llmToken, question, params, adapter);
-            adapter.flushLastChunk(); // 收尾发一次 sources
             emitter.complete();
         } catch (Exception e) {
             log.error("LLM调用异常", e);

src/main/java/com/knowledge/base/infrastructure/util/http/FilteredSseOutputAdapter.java

@@ -51,27 +51,16 @@ public class FilteredSseOutputAdapter implements WriterAdapter {
                 // 合并缓存中的 sources
                 filtered.putAll(lastChunk);
                 lastChunk.clear(); // 清空缓存
-
                 String payload = mapper.writeValueAsString(filtered);
-                emitter.send("data: " + payload + "\n\n");
+                emitter.send(SseEmitter.event().data(payload));
             } else if (!filtered.isEmpty()) {
                 // 普通中间片段
                 String payload = mapper.writeValueAsString(filtered);
-                emitter.send("data: " + payload + "\n\n");
+                emitter.send(SseEmitter.event().data(payload));
             }
 
         } catch (Exception e) {
             log.warn("SSE数据解析失败：{}", line, e);
         }
     }
-
-    public void flushLastChunk() {
-        if (lastChunk.isEmpty()) return;
-        try {
-            String finalJson = mapper.writeValueAsString(lastChunk);
-            emitter.send("data: " + finalJson + "\n\n");
-        } catch (Exception e) {
-            log.warn("flush 最后一条 SSE 失败", e);
-        }
-    }
 }