[update] 微观大数据平台-流关闭

signal-optimize-service/src/main/java/net/wanji/opt/service/impl/TrendServiceImpl.java

@@ -2070,6 +2070,8 @@ public class TrendServiceImpl implements TrendService {
         } catch (Exception e) {
             log.error("车道周期数据导出excel异常：", e);
             throw new RuntimeException(e);
+        } finally {
+            response.getOutputStream().close();
         }
     }
 }