+ [会话支持]

backend/src/main/java/pangea/hiagent/agent/react/DefaultReactExecutor.java

@@ -126,6 +126,7 @@ public class DefaultReactExecutor implements ReactExecutor {
 
         messages.add(new SystemMessage(systemPrompt));
 
+        if (!newChat) {
             if (agent != null) {
                 try {
                     // 如果没有提供用户ID，则尝试获取当前用户ID
@@ -138,15 +139,16 @@ public class DefaultReactExecutor implements ReactExecutor {
 
                     List<org.springframework.ai.chat.messages.Message> historyMessages =
                             memoryService.getHistoryMessages(sessionId, historyLength);
-                if (!newChat) {
                     messages.addAll(historyMessages);
-                }
+
 
                     memoryService.addUserMessageToMemory(sessionId, userInput);
                 } catch (Exception e) {
                     log.warn("获取历史对话记录时发生错误: {}", e.getMessage());
                 }
             }
+        }
+
 
         messages.add(new UserMessage(userInput));
         for (Message message : messages) {
@@ -179,13 +181,13 @@ public class DefaultReactExecutor implements ReactExecutor {
             log.info("agentTools {}", agentTools);
 
             if (agent.getId().compareToIgnoreCase("agent-8") == 0) {
-                if (!chatService.chatExists(tmpUserId, agent.getId())) {
-                    log.info("new chat for {} {} ", userId, agent.getId());
-                    prompt = buildPromptWithHistory(defaultSystemPrompt, userInput, agent, tmpUserId, true);
-                }
+                // if (!chatService.chatExists(tmpUserId, agent.getId())) {
+                //    log.info("new chat for {} {} ", userId, agent.getId());
+                prompt = buildPromptWithHistory(agent.getSystemPrompt(), userInput, agent, tmpUserId, true);
+                // }
                 chatClient.prompt(prompt)
                         .tools(agentTools.toArray())
-                        .toolContext(Map.of("emitterId", emitterId, "userId", sseTokenEmitter.getUserId(),"agentId",agent.getId()))
+                        .toolContext(Map.of("emitterId", emitterId, "userId", sseTokenEmitter.getUserId(), "agentId", agent.getId()))
                         .stream()
                         .chatResponse()
                         .subscribe(

backend/src/main/java/pangea/hiagent/agent/service/AgentChatService.java

@@ -2,6 +2,7 @@ package pangea.hiagent.agent.service;
 
 import lombok.extern.slf4j.Slf4j;
 
+import org.apache.commons.lang3.StringUtils;
 import org.springframework.scheduling.annotation.Async;
 import org.springframework.stereotype.Service;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
@@ -80,7 +81,7 @@ public class AgentChatService {
      * @param response    HTTP响应
      * @return SSE emitter
      */
-    public SseEmitter handleChatStream(String agentId, ChatRequest chatRequest, HttpServletResponse response) {
+    public PangeaEmitter handleChatStream(String agentId, ChatRequest chatRequest, HttpServletResponse response) {
         log.info("开始处理流式对话请求，AgentId: {}, 用户消息: {}", agentId, chatRequest.getMessage());
 
         // 尝试获取当前用户ID，优先从SecurityContext获取，其次从请求中解析JWT
@@ -104,7 +105,7 @@ public class AgentChatService {
                     emitter.complete();
                 }
             }
-            return emitter;
+            return createPangeaEmitter(emitter,chatRequest);
         }
 
         // 验证Agent是否存在
@@ -122,7 +123,7 @@ public class AgentChatService {
                     emitter.complete();
                 }
             }
-            return emitter;
+            return createPangeaEmitter(emitter,chatRequest);
         }
 
         // 创建 SSE emitter
@@ -130,10 +131,22 @@ public class AgentChatService {
         String emitterId = UUID.randomUUID().toString();
         log.info("emitterId: {}", emitterId);
         userSseService.registerEmitter(emitterId, emitter);
+
         // 异步处理对话，避免阻塞HTTP连接
         processChatStreamAsync(emitter, agent, chatRequest, userId,emitterId);
 
-        return emitter;
+        return createPangeaEmitter(emitter,chatRequest);
+    }
+    private PangeaEmitter createPangeaEmitter(SseEmitter sseEmitter,ChatRequest chatRequest){
+        PangeaEmitter pangeaEmitter = null;
+        if(StringUtils.isEmpty(chatRequest.getChatId())){
+            String chatId = UUID.randomUUID().toString();
+            chatRequest.setChatId(chatId);
+            pangeaEmitter = new PangeaEmitter(sseEmitter,chatId);
+        }else{
+            pangeaEmitter = new PangeaEmitter(sseEmitter,chatRequest.getChatId());
+        }
+        return pangeaEmitter;
     }
 
     /**
@@ -202,6 +215,7 @@ public class AgentChatService {
             // 创建新的SseTokenEmitter实例
             SseTokenEmitter tokenEmitter = new SseTokenEmitter(userSseService, emitter, agent, request, userId, this::handleCompletion);
             tokenEmitter.setEmitterId(emitterId);
+            tokenEmitter.setChatId(chatRequest.getChatId());
             // 处理流式请求前再次检查连接状态
             if (!userSseService.isEmitterCompleted(emitter)) {
                 processor.processStreamRequest(request, agent, userId, tokenEmitter);

backend/src/main/java/pangea/hiagent/agent/service/SseTokenEmitter.java

@@ -26,6 +26,7 @@ public class SseTokenEmitter implements TokenConsumerWithCompletion {
     private final String userId;
     private final CompletionCallback completionCallback;
     private String emitterId;
+    private String chatId;
     
     /**
      * 构造函数
@@ -170,4 +171,11 @@ public class SseTokenEmitter implements TokenConsumerWithCompletion {
     public String getUserId() {
         return userId;
     }
+
+    public void setChatId(String chatId) {
+        this.chatId = chatId;
+    }
+    public String getChatId() {
+        return chatId;
+    }
 }
\ No newline at end of file

backend/src/main/java/pangea/hiagent/web/controller/AgentChatController.java

@@ -5,6 +5,7 @@ import org.springframework.web.bind.annotation.*;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
 import pangea.hiagent.agent.service.AgentChatService;
+import pangea.hiagent.agent.service.PangeaEmitter;
 import pangea.hiagent.web.dto.ChatRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import jakarta.validation.Valid;
@@ -34,7 +35,7 @@ public class AgentChatController {
      * @return SSE emitter
      */
     @PostMapping("/chat-stream")
-    public SseEmitter chatStream(
+    public PangeaEmitter chatStream(
             @RequestParam @NotBlank(message = "Agent ID不能为空") String agentId,
             @RequestBody @Valid ChatRequest chatRequest,
             HttpServletResponse response) {

backend/src/main/java/pangea/hiagent/web/dto/AgentRequest.java

@@ -17,6 +17,7 @@ import java.util.List;
 @AllArgsConstructor
 @JsonInclude(JsonInclude.Include.NON_NULL)
 public class AgentRequest {
+    private String chatId;
     private String agentId;
     private String systemPrompt;
     private String userMessage;

backend/src/main/java/pangea/hiagent/web/dto/ChatRequest.java

@@ -18,6 +18,9 @@ import jakarta.validation.constraints.NotBlank;
 @AllArgsConstructor
 @JsonInclude(JsonInclude.Include.NON_NULL)
 public class ChatRequest {
+
+    private String chatId;
+
     @NotBlank(message = "用户消息不能为空")
     private String message;
     
@@ -31,6 +34,7 @@ public class ChatRequest {
      */
     public AgentRequest toAgentRequest(String agentId, pangea.hiagent.model.Agent agent, pangea.hiagent.tool.AgentToolManager agentToolManager) {
         return AgentRequest.builder()
+                .chatId(this.chatId)
                 .agentId(agentId)
                 .systemPrompt(agent.getSystemPrompt())
                 .userMessage(this.message)