From 732f9e50298732ec61f5acb188ec20a079859e12 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=90=AF=E8=88=AA?= <280645618@qq.com>
Date: Tue, 10 Mar 2026 22:05:37 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96sessionid?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../qihangerp/erp/serviceImpl/AiService.java  | 31 ++++++++++++++-----
 vue/src/views/index.vue                       |  8 +++--
 2 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/api/ai-agent/src/main/java/cn/qihangerp/erp/serviceImpl/AiService.java b/api/ai-agent/src/main/java/cn/qihangerp/erp/serviceImpl/AiService.java
index 145227d1..ebb13cea 100644
--- a/api/ai-agent/src/main/java/cn/qihangerp/erp/serviceImpl/AiService.java
+++ b/api/ai-agent/src/main/java/cn/qihangerp/erp/serviceImpl/AiService.java
@@ -153,17 +153,34 @@ public class AiService {
             StringBuilder promptBuilder = new StringBuilder();
             promptBuilder.append("今天的日期是：").append(today).append("\n");
             
-            // 添加历史对话作为上下文
+            // 添加历史对话作为上下文，但限制总长度
+            final int MAX_CONTEXT_LENGTH = 2000; // 最大上下文长度限制
+            StringBuilder contextBuilder = new StringBuilder();
+            
             if (conversationHistory != null && !conversationHistory.isEmpty()) {
-                promptBuilder.append("以下是之前的对话历史：\n");
-                for (ConversationHistoryManager.Message msg : conversationHistory) {
+                // 倒序遍历对话历史，优先保留最新的对话
+                for (int i = conversationHistory.size() - 1; i >= 0; i--) {
+                    ConversationHistoryManager.Message msg = conversationHistory.get(i);
+                    String msgStr;
                     if (msg.getRole().equals("user")) {
-                        promptBuilder.append("用户: " + msg.getContent()).append("\n");
+                        msgStr = "用户: " + msg.getContent() + "\n";
                     } else {
-                        promptBuilder.append("助手: " + msg.getContent()).append("\n");
+                        msgStr = "助手: " + msg.getContent() + "\n";
+                    }
+                    
+                    // 如果添加当前消息会超过限制，则停止添加更早的消息
+                    if (contextBuilder.length() + msgStr.length() <= MAX_CONTEXT_LENGTH) {
+                        contextBuilder.insert(0, msgStr); // 插入到开头，保持时间顺序
+                    } else {
+                        break;
                     }
                 }
-                promptBuilder.append("\n当前用户消息：\n");
+                
+                if (contextBuilder.length() > 0) {
+                    promptBuilder.append("以下是之前的对话历史：\n");
+                    promptBuilder.append(contextBuilder);
+                    promptBuilder.append("\n当前用户消息：\n");
+                }
             }
             
             // 添加当前消息
@@ -276,4 +293,4 @@ public class AiService {
     public String processMessage(String message) {
         return processMessage(message, "llama3", null, null);
     }
-}
+}
\ No newline at end of file
diff --git a/vue/src/views/index.vue b/vue/src/views/index.vue
index 99fd9996..3fe80f8c 100644
--- a/vue/src/views/index.vue
+++ b/vue/src/views/index.vue
@@ -240,8 +240,10 @@ export default {
       }
     },
     initSse() {
-      // 生成唯一客户端ID
-      this.clientId = 'client_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
+      // 从localStorage获取clientId，如果没有则生成新的
+      this.clientId = localStorage.getItem('aiChatClientId') || ('client_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9));
+      // 保存clientId到localStorage
+      localStorage.setItem('aiChatClientId', this.clientId);
       // 获取token
       const token = getToken();
 
@@ -827,3 +829,5 @@ export default {
   background: #a8a8a8;
 }
 </style>
+
+```
\ No newline at end of file