fix：回答出现null

src/main/java/cn/com/poc/agent_application/aggregate/impl/AgentApplicationInfoServiceImpl.java

@@ -131,7 +131,7 @@ public class AgentApplicationInfoServiceImpl implements AgentApplicationInfoServ
         systemMessage.setRole(AgentApplicationDialoguesRecordConstants.ROLE.SYSTEM);
 
         Message message = new Message();
-        message.setContent("{"+input+"}");
+        message.setContent("{" + input + "}");
         message.setRole(AgentApplicationDialoguesRecordConstants.ROLE.USER);
         List<Message> messages = new ArrayList<Message>() {{
             add(systemMessage);
@@ -396,7 +396,7 @@ public class AgentApplicationInfoServiceImpl implements AgentApplicationInfoServ
                 if (LargeModelFunctionEnum.set_long_memory.name().equals(name)) {
                     List<LongMemoryEntity> longMemoryEntities = GetLongMemory.get(identifier);
                     if (CollectionUtils.isNotEmpty(longMemoryEntities)) {
-                        StringBuilder stringBuilder = new StringBuilder();
+                        StringBuilder stringBuilder = new StringBuilder("");
                         for (LongMemoryEntity longMemoryEntity : longMemoryEntities) {
                             stringBuilder
                                     .append("Time").append(":").append(longMemoryEntity.getTimestamp())
@@ -407,12 +407,14 @@ public class AgentApplicationInfoServiceImpl implements AgentApplicationInfoServ
                         String searchMemoryContent = stringBuilder.toString();
                         promptTemplate = promptTemplate.replace("${longMemoryResult}", searchMemoryContent);
                     }
+                } else {
+                    promptTemplate = promptTemplate.replace("${longMemoryResult}", StringUtils.EMPTY);
                 }
 
                 // 变量
                 if (LargeModelFunctionEnum.set_value_memory.name().equals(name)) {
                     Map<Object, Object> map = GetValueMemory.get(identifier);
-                    StringBuilder stringBuilder = new StringBuilder();
+                    StringBuilder stringBuilder = new StringBuilder("");
                     if (MapUtils.isNotEmpty(map)) {
                         Set<Object> keySet = map.keySet();
                         for (Object key : keySet) {
@@ -420,6 +422,8 @@ public class AgentApplicationInfoServiceImpl implements AgentApplicationInfoServ
                         }
                     }
                     promptTemplate = promptTemplate.replace("${valueMemoryResult}", stringBuilder.toString());
+                } else {
+                    promptTemplate = promptTemplate.replace("${valueMemoryResult}", StringUtils.EMPTY);
                 }
             }