流式数据请求优化。

pages/chat/components/ai-paging.vue

@@ -479,11 +479,16 @@ const sendMessage = (text) => {
                                     console.log('📝 Has job info:', hasJobInfo);
                                     
                                     // 开始朗读当前消息
-                                    speechIndex.value = index;
-                                    readMarkdown(message.displayText, index);
+                            speechIndex.value = index;
+                            readMarkdown(message.displayText, index, { immediate: false });
+                            // 一旦开始朗读，就设置speechIndex，避免重复调用
+                            speechIndex.value = index;
                                 } else {
                                     console.log('⏳ Waiting for more content before TTS, current length:', message.displayText.length);
                                 }
+                            } else {
+                                // 已经开始朗读这条消息，不再重复调用
+                                console.log('⏭️ Already speaking this message, skipping duplicate TTS call');
                             }
                         }
                     },
@@ -508,7 +513,7 @@ const sendMessage = (text) => {
                                 
                                 // 开始朗读完整的内容
                                 speechIndex.value = lastMessageIndex;
-                                readMarkdown(lastMessage.displayText, lastMessageIndex);
+                                readMarkdown(lastMessage.displayText, lastMessageIndex, { immediate: true });
                             }
                         }
                     },
@@ -781,7 +786,10 @@ function confirmFeeBack(value) {
 // 防抖定时器
 let ttsDebounceTimer = null;
 
-function readMarkdown(value, index) {
+// 保存上一次调用的文本内容，避免重复调用TTS
+let lastSpeechText = '';
+
+function readMarkdown(value, index, options = {}) {
     console.log('🎤 readMarkdown called');
     console.log('📝 Text to speak:', value ? value.substring(0, 100) + '...' : 'No text');
     console.log('🔢 Index:', index);
@@ -798,17 +806,33 @@ function readMarkdown(value, index) {
     console.log('🛑 Always stopping current speech before starting new one');
     speechIndex.value = index;
     
-    // 使用防抖，避免频繁调用TTS
-    ttsDebounceTimer = setTimeout(() => {
-        console.log('🎵 Starting new speech');
-        console.log('🎵 Calling speak function with text length:', value ? value.length : 0);
-        try {
-            speak(value);
-            console.log('✅ Speak function called successfully');
-        } catch (error) {
-            console.error('❌ Error calling speak function:', error);
+    // 立即调用speak，不使用防抖延迟
+    const speakNow = () => {
+        // 检查文本内容是否发生变化，避免重复调用TTS
+        if (value !== lastSpeechText) {
+            console.log('🎵 Starting new speech');
+            console.log('🎵 Calling speak function with text length:', value ? value.length : 0);
+            try {
+                speak(value);
+                console.log('✅ Speak function called successfully');
+                // 更新上一次调用的文本内容
+                lastSpeechText = value;
+            } catch (error) {
+                console.error('❌ Error calling speak function:', error);
+            }
+        } else {
+            console.log('🔄 Same text as last speech, skipping duplicate TTS call');
         }
-    }, 300); // 300ms防抖延迟
+    };
+    
+    // 改进防抖逻辑，确保在短时间内只调用一次
+    if (options.immediate) {
+        // 如果是onComplete回调，立即播放
+        speakNow();
+    } else {
+        // 对于流式数据，总是使用防抖，避免频繁调用
+        ttsDebounceTimer = setTimeout(speakNow, 500); // 延长防抖时间到500ms
+    }
 }
 function stopMarkdown(value, index) {
     console.log('⏸️ stopMarkdown called for index:', index);