fix:null

src/main/java/cn/com/poc/long_document/aggregate/impl/LongTextDialoguesServiceImpl.java

@@ -530,8 +530,10 @@ public class LongTextDialoguesServiceImpl implements LongTextDialoguesService {
                     logger.error("LLM Error,code:{}", result.getCode());
                     throw new BusinessException("获取总结摘要失败");
                 }
-                String message = result.getMessage();
-                summary.append(message);
+                if (StringUtils.isNotBlank(result.getMessage())) {
+                    String message = result.getMessage();
+                    summary.append(message);
+                }
             }
             bufferedReader.close();
             return summary.toString();
@@ -591,8 +593,10 @@ public class LongTextDialoguesServiceImpl implements LongTextDialoguesService {
                     logger.error("LLM Error,code:{}", result.getCode());
                     throw new BusinessException("获取核心观点失败");
                 }
-                String message = result.getMessage();
-                corePoint.append(message);
+                if (StringUtils.isNotBlank(result.getMessage())) {
+                    String message = result.getMessage();
+                    corePoint.append(message);
+                }
             }
             bufferedReader.close();
             return corePoint.toString();