chore：H5和微信小程序都可以正常聊天

common/js/ai-service.js

@@ -184,11 +184,8 @@ export default {
         })
       });
   
-      if (!response.ok) {
+      if (!response.ok || !response.body) {
-        throw new Error(`HTTP ${response.status}`);
+        throw new Error('无效响应');
-      }
-      if (!response.body) {
-        throw new Error('响应体不可用');
       }
   
       const reader = response.body.getReader();
@@ -197,50 +194,64 @@ export default {
       let content = '';
       let conversationId = '';
   
-      function processBuffer(buf, callback) {
+      while (true) {
-        const lines = buf.split('\n');
+        const { done, value } = await reader.read();
-        buf = lines.pop() || '';
+        if (done) break;
+  
+        buffer += decoder.decode(value, { stream: true });
+  
+        // 按行分割，保留不完整的最后一行
+        const lines = buffer.split('\n');
+        buffer = lines.pop() || ''; // 未完成的行留到下次
+  
         for (const line of lines) {
           const trimmed = line.trim();
           if (trimmed.startsWith('data:')) {
-            const jsonStr = trimmed.slice(5).trim();
+            try {
-            if (jsonStr) {
+              const jsonStr = trimmed.slice(5).trim();
-              try {
+              if (jsonStr && jsonStr !== '[DONE]') {
                 const data = JSON.parse(jsonStr);
                 if (data.event === 'message') {
                   const text = data.answer || data.text || '';
                   content += text;
-                  callback(text);
+                  if (onChunk) onChunk(text);
                 }
                 if (data.conversation_id) {
                   conversationId = data.conversation_id;
                 }
                 if (data.event === 'message_end') {
-                  // 可选：提前完成
+                  // 可提前结束
                 }
-              } catch (e) {
-                console.warn('解析流数据失败:', e);
               }
+            } catch (e) {
+              console.warn('解析失败:', e, line);
             }
           }
         }
-        return buf;
       }
   
-      while (true) {
+      // 处理最后残留的 buffer（如果有）
-        const { done, value } = await reader.read();
+      if (buffer.trim().startsWith('data:')) {
-        if (done) break;
+        try {
-        buffer += decoder.decode(value, { stream: true });
+          const jsonStr = buffer.trim().slice(5);
-        buffer = processBuffer(buffer, (chunk) => {
+          if (jsonStr) {
-          if (onChunk) onChunk(chunk);
+            const data = JSON.parse(jsonStr);
-        });
+            if (data.event === 'message') {
+              const text = data.answer || '';
+              content += text;
+              if (onChunk) onChunk(text);
+            }
+            if (data.conversation_id) {
+              conversationId = data.conversation_id;
+            }
+          }
+        } catch (e) {
+          console.warn('最后 buffer 解析失败:', e);
+        }
       }
   
       if (onComplete) {
-        onComplete({
+        onComplete({ content, conversation_id: conversationId });
-          content,
-          conversation_id: conversationId
-        });
       }
       return { content, conversation_id: conversationId };
     } catch (error) {
@@ -248,11 +259,6 @@ export default {
       throw error;
     }
     // #endif
-
-    // #ifdef MP-WEIXIN
-    // 理论上不会执行到这里，但防止 fallback
-    return this.sendStreamMessage(message, onChunk, onComplete);
-    // #endif
   },
 
   /**

components/ai-chat-message/ai-chat-message.vue

@@ -810,44 +810,46 @@ export default {
     },
     
     // 发送流式消息
-    async sendStreamMessage(userMessage) {
+ // 发送流式消息（自动适配 H5 / 微信小程序）
-      // 创建流式消息对象
+ async sendStreamMessage(userMessage) {
-      const streamMessage = {
+   // 创建流式消息对象
-        id: ++this.messageId,
+   const streamMessage = {
-        role: 'ai',
+     id: ++this.messageId,
-        type: 'text',
+     role: 'ai',
-        content: '',
+     type: 'text',
-        timestamp: Date.now(),
+     content: '',
-        isStreaming: true
+     timestamp: Date.now(),
-      }
+     isStreaming: true
+   };
  
-      // 移除加载状态，添加流式消息
+   // 移除加载状态，添加流式消息
-      this.messages = this.messages.filter(msg => msg.type !== 'loading')
+   this.messages = this.messages.filter(msg => msg.type !== 'loading');
-	  this.shouldScrollToBottom = true
+   this.shouldScrollToBottom = true;
-      this.messages.push(streamMessage)
+   this.messages.push(streamMessage);
  
-     // 开始流式响应
+   try {
-     await aiService.sendStreamMessage(
+     // #ifdef H5
+     // ===== H5: 使用 POST + 流式 (fetch readable stream) =====
+     await aiService.sendHttpStream(
        userMessage,
-       // 流式数据回调
        (chunk) => {
-         streamMessage.content += chunk
+         // 实时更新内容
-         this.$forceUpdate() // 或 this.$nextTick()
+         streamMessage.content += chunk;
+         this.$forceUpdate(); // 强制更新视图
        },
-       // 完成回调：处理对象或字符串
        (completeResult) => {
+         // 流结束回调
          let finalContent = '';
          let convId = '';
  
-         // 判断是对象还是字符串
          if (typeof completeResult === 'string') {
            finalContent = completeResult;
          } else {
            finalContent = completeResult.content || '';
-           convId = completeResult.conversation_id || ''; // 👈 关键：提取 conversation_id
+           convId = completeResult.conversation_id || '';
          }
  
-         // 更新消息状态
+         // 更新最终内容
          streamMessage.isStreaming = false;
          streamMessage.content = finalContent;
  
@@ -857,18 +859,72 @@ export default {
            { id: 2, text: '没帮助', type: 'dislike' }
          ];
  
-         //  保存 conversation_id 到本地
+         // 保存会话 ID
          if (convId) {
+           this.currentConversationId = convId;
            aiService.setConversationId(convId);
+           this.saveConversationIdToLocal(convId);
          }
  
          // 触发事件
          this.$emit('ai-response', streamMessage);
-		 this.saveConversationIdToLocal(convId);
-		 this.currentConversationId = convId;
        }
      );
-	 },
+     // #endif
+ 
+     // #ifdef MP-WEIXIN
+     // ===== 微信小程序: 使用 WebSocket =====
+     await aiService.sendStreamMessage(
+       userMessage,
+       (chunk) => {
+         // 实时更新内容
+         streamMessage.content += chunk;
+         this.$forceUpdate();
+       },
+       (completeResult) => {
+         // 流结束回调
+         let finalContent = completeResult?.content || '';
+         let convId = completeResult?.conversation_id || '';
+ 
+         // 更新最终内容
+         streamMessage.isStreaming = false;
+         streamMessage.content = finalContent;
+ 
+         // 添加操作按钮
+         streamMessage.actions = [
+           { id: 1, text: '有帮助', type: 'like' },
+           { id: 2, text: '没帮助', type: 'dislike' }
+         ];
+ 
+         // 保存会话 ID
+         if (convId) {
+           this.currentConversationId = convId;
+           aiService.setConversationId(convId);
+           this.saveConversationIdToLocal(convId);
+         }
+ 
+         // 触发事件
+         this.$emit('ai-response', streamMessage);
+       }
+     );
+     // #endif
+   } catch (error) {
+     console.error('流式请求失败:', error);
+     // 移除流式消息
+     this.messages = this.messages.filter(msg => msg.id !== streamMessage.id);
+     // 显示错误
+     const errorMsg = {
+       id: ++this.messageId,
+       role: 'ai',
+       type: 'text',
+       content: '抱歉，服务暂时不可用，请稍后重试。',
+       timestamp: Date.now(),
+       actions: [{ id: 1, text: '重试', type: 'retry' }]
+     };
+     this.messages.push(errorMsg);
+     this.$emit('ai-response', errorMsg);
+   }
+ },
     generateAIResponse(userMessage) {
       const responses = {
         '你好': '您好！我是AI智能客服，很高兴为您服务！有什么可以帮助您的吗？',