feat: SSE客户端断开感知

src/main/java/cn/com/poc/expose/aggregate/impl/AgentApplicationServiceImpl.java

@@ -192,9 +192,11 @@ public class AgentApplicationServiceImpl implements AgentApplicationService {
                     knowledgeSuperclassProblemConfig, httpServletResponse);
 
             //保存对话记录
+            if (StringUtils.isNotBlank(agentResultEntity.getMessage())) {
                 outputRecord.setContent(agentResultEntity.getMessage());
                 outputRecord.setReasoningContent(agentResultEntity.getReasoningContent());
                 bizAgentApplicationDialoguesRecordService.save(outputRecord);
+            }
             //数据采集
             if (StringUtils.isBlank(channel)) {
                 channel = DataAnalyzeChannelEnum.link_share.getChannel();