ss

frontend/src/components/AgentChatPreview.vue

@@ -179,6 +179,7 @@ const inputMessage = ref('')
 const loading = ref(false)
 const messagesContainer = ref<HTMLElement>()
 let pollingInterval: any = null
+let replyAdded = false // 标志位：防止重复添加回复
 
 // 发送消息
 const handleSendMessage = async () => {
@@ -210,9 +211,17 @@ const handleSendMessage = async () => {
     
     const execution = response.data
     
+    // 重置标志位
+    replyAdded = false
+    
     // 轮询执行状态
     const checkStatus = async () => {
       try {
+        // 如果已经添加过回复，直接返回，避免重复添加
+        if (replyAdded) {
+          return
+        }
+        
         // 获取详细执行状态（包含节点执行信息）
         const statusResponse = await api.get(`/api/v1/executions/${execution.id}/status`)
         const status = statusResponse.data
@@ -225,6 +234,14 @@ const handleSendMessage = async () => {
         const exec = execResponse.data
         
         if (exec.status === 'completed') {
+          // 防止重复添加：如果已经添加过回复，直接返回
+          if (replyAdded) {
+            return
+          }
+          
+          // 标记已添加回复
+          replyAdded = true
+          
           // 提取Agent回复
           let agentReply = ''
           if (exec.output_data) {
@@ -268,6 +285,14 @@ const handleSendMessage = async () => {
             pollingInterval = null
           }
         } else if (exec.status === 'failed') {
+          // 防止重复添加：如果已经添加过回复，直接返回
+          if (replyAdded) {
+            return
+          }
+          
+          // 标记已添加回复
+          replyAdded = true
+          
           messages.value.push({
             role: 'agent',
             content: `执行失败: ${exec.error_message || '未知错误'}`,
@@ -290,6 +315,14 @@ const handleSendMessage = async () => {
           // 不需要做任何操作，等待下次轮询
         }
       } catch (error: any) {
+        // 防止重复添加：如果已经添加过回复，直接返回
+        if (replyAdded) {
+          return
+        }
+        
+        // 标记已添加回复
+        replyAdded = true
+        
         messages.value.push({
           role: 'agent',
           content: `获取执行结果失败: ${error.response?.data?.detail || error.message}`,