关于前端界面的完善-山大软院创新实训项目博客_10

已于 2025-06-14 21:27:53 修改
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文章标签： 前端
于 2025-06-12 00:22:37 首次发布
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本文链接：https://blog.youkuaiyun.com/ws_bones/article/details/148597165

本次项目关于后端数据库的部分，我已经做完，于是，我又转向了前端界面的优化内容。 

 一、首先我们来看一下优化效果：

优化前：
优化后：

二、任务背景

作为英语学习应用的核心功能之一，AI语音对话模块承担着帮助学生提升口语能力的重要任务。在最近的开发过程中，我们发现虽然现有功能已经能够满足基本需求，但在用户体验和界面美观度方面还有较大提升空间。为此，我主导了对该模块的全面优化工作。

三、优化目标

  1. 提升视觉吸引力：通过现代化设计语言增强界面美观度，让用户“耳目一新！”

  2. 改善交互体验：使语音交互更加自然流畅

  3. 增强反馈机制：让用户更清晰地了解系统状态

  4. 保持功能完整性：确保所有核心功能不受影响

  5. 提高可访问性：优化对不同设备的适配性，我们对此增加了媒体查询，能够满足不同设备，比如手机，平板，电脑的需求

四、具体改进

1. 界面视觉重构

问题分析：原界面是队友一开始搞的，只是把最基础的界面给弄出来了，采用基本布局，缺乏专业设计感，色彩单一，视觉层次不分明，一句话就是：不是很好看。

解决方案：

  • 采用卡片式设计语言，添加圆角和大阴影

  • 引入蓝紫色渐变主题色，体现科技感

  • 为消息气泡添加发送者标签，指明右侧为用户，左侧为AI

  • 添加装饰性背景元素增强深度感

<div class="message-bubble user-message">
  {{ msg.content }}
</div>
.user-message {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 5px;
  margin-left: 15%;
}

 2. 交互体验优化

问题分析：原录音按钮设计普通，状态变化不明显，缺乏视觉反馈。

解决方案：

  • 重新设计录音按钮为大圆形按钮

  • 添加脉冲动画效果指示录音状态

  • 按钮悬停时添加上浮效果

<button @click="toggleRecording" :class="['record-button', isRecording ? 'recording' : '']">
  <i :class="isRecording ? 'fas fa-microphone-alt' : 'fas fa-microphone'"></i>
  {{ isRecording ? '正在录音...' : '按住说话' }}
</button>
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
  70% { box-shadow: 0 0 0 15px rgba(239, 68, 68, 0); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

3. 消息系统增强

问题分析：消息显示单调，新消息进入不自然，历史消息管理不足。

解决方案：

  • 为消息添加淡入动画

  • 实现自动滚动到底部功能

  • 限制历史消息长度（保留最近4轮对话）

  • 区分用户消息和AI消息的视觉样式

watch(messages, () => {
  nextTick(() => {
    const chatArea = document.querySelector('.chat-area');
    if (chatArea) chatArea.scrollTop = chatArea.scrollHeight;
  });
  
  if (messages.value.length > MAX_HISTORY_LENGTH * 2) {
    messages.value = messages.value.slice(-MAX_HISTORY_LENGTH * 2);
  }
}, { deep: true });

4. 状态反馈系统

问题分析：系统状态反馈不足，用户难以了解当前状态。

解决方案：

  • 添加点状动画加载指示器

  • 增强识别文本的显示样式

  • 优化错误提示的视觉效果

  • 添加AI思考中的状态提示

<div v-if="isLoadingAIResponse" class="loading-indicator">
  <div class="dot-flashing"></div>
  <span>AI正在思考中...</span>
</div>

5. 响应式设计改进

问题分析：原界面在小屏幕上显示效果不佳。

解决方案：

  • 优化消息气泡在小屏幕上的最大宽度

  • 调整字体大小和间距

  • 重新布局输入区域

  • 优化滚动条样式

  • 重点是利用媒体查询！

@media (max-width: 600px) {
  .speech-container {
    padding: 20px 15px;
    height: 550px;
  }
  
  .message-bubble {
    max-width: 90%;
    padding: 12px 15px;
    font-size: 1rem;
  }
}

五、源码

<template>
  <div class="speech-container">
    <div class="decoration dec-1"></div>
    <div class="decoration dec-2"></div>
    
    <div class="header">
      <h2>AI 语音对话助手</h2>
      <p>与AI进行自然对话，提升您的英语口语能力</p>
    </div>
    
    <div class="chat-area">
      <div v-for="(msg, index) in messages" :key="index" 
           :class="['message-bubble', msg.isUser ? 'user-message' : 'ai-message']">
        {{ msg.content }}
      </div>
      
      <div v-if="isLoadingAIResponse" class="loading-indicator">
        <div class="dot-flashing"></div>
        <span>AI正在思考中...</span>
      </div>
    </div>
    
    <div class="input-section">
      <button @click="toggleRecording" :class="['record-button', isRecording ? 'recording' : '']">
        <i :class="isRecording ? 'fas fa-microphone-alt' : 'fas fa-microphone'"></i>
        {{ isRecording ? '正在录音...' : '按住说话' }}
      </button>
      
      <div v-if="recognizedText" class="recognized-text">
        <i class="fas fa-comment-alt"></i>
        <span>识别内容: {{ recognizedText }}</span>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, watch, nextTick } from 'vue';
import * as SpeechSDK from 'microsoft-cognitiveservices-speech-sdk';

interface ChatMessage {
  content: string;
  isUser: boolean;
}

const messages = ref<ChatMessage[]>([
  { content: '你好！我是您的英语学习助手，让我们开始对话吧！', isUser: false }
]);
const isRecording = ref(false);
const recognizedText = ref('');
const isLoadingAIResponse = ref(false);

const MAX_HISTORY_LENGTH = 8;

// 自动滚动到底部
const scrollToBottom = () => {
  nextTick(() => {
    const chatArea = document.querySelector('.chat-area');
    if (chatArea) chatArea.scrollTop = chatArea.scrollHeight;
  });
};

// 在添加消息后调用滚动
watch(messages, () => {
  scrollToBottom();
  if (messages.value.length > MAX_HISTORY_LENGTH * 2) {
    messages.value = messages.value.slice(-MAX_HISTORY_LENGTH * 2);
  }
}, { deep: true });

const speechKey = "CDBB85HgvNuqkZxmCWCR9pRMPesII7ABmyK2UNgdEqEKCFqDa0szJQQJ99BDAC3pKaRXJ3w3AAAYACOGKt7b";
const speechRegion = "eastasia";

let recognizer: SpeechSDK.SpeechRecognizer | null = null;

const speechConfig = SpeechSDK.SpeechConfig.fromSubscription(speechKey, speechRegion);
speechConfig.speechRecognitionLanguage = "en-US";
speechConfig.speechSynthesisVoiceName = "en-US-GuyNeural";

const audioConfig = SpeechSDK.AudioConfig.fromDefaultMicrophoneInput();

const initializeRecognizer = () => {
  if (!recognizer) {
    recognizer = new SpeechSDK.SpeechRecognizer(speechConfig, audioConfig);

    recognizer.recognized = async (s, e) => {
      if (e.result.reason === SpeechSDK.ResultReason.RecognizedSpeech) {
        const userText = e.result.text;
        console.log(`RECOGNIZED: Text=${userText}`);
        recognizedText.value = userText;
        if (userText.trim()) {
          messages.value.push({ content: userText, isUser: true });
          await sendToAIAndSpeak(userText);
        }
      } else if (e.result.reason === SpeechSDK.ResultReason.NoMatch) {
        console.log("NOMATCH: Speech could not be recognized.");
        recognizedText.value = '无法识别语音';
      }
      stopRecordingInternal();
    };

    recognizer.canceled = (s, e) => {
      console.log(`CANCELED: Reason=${e.reason}`);
      if (e.reason === SpeechSDK.CancellationReason.Error) {
        console.error(`CANCELED: ErrorCode=${e.errorCode}`);
        console.error(`CANCELED: ErrorDetails=${e.errorDetails}`);
        recognizedText.value = '识别出错，请检查麦克风权限和网络';
      }
      stopRecordingInternal();
    };

    recognizer.sessionStopped = (s, e) => {
      console.log("\n    Session stopped event.");
      stopRecordingInternal();
    };
  }
};

const startRecording = () => {
  if (isRecording.value) return;
  initializeRecognizer();
  if (recognizer) {
    recognizedText.value = '';
    recognizer.startContinuousRecognitionAsync(
      () => {
        console.log("Recognition started.");
        isRecording.value = true;
      },
      (err) => {
        console.error(`ERROR starting recognition: ${err}`);
        isRecording.value = false;
      }
    );
  }
};

const stopRecordingInternal = () => {
  if (recognizer && isRecording.value) {
    recognizer.stopContinuousRecognitionAsync(
      () => {
        console.log("Recognition stopped.");
      },
      (err) => {
        console.error(`ERROR stopping recognition: ${err}`);
      }
    );
  }
  isRecording.value = false;
};

const toggleRecording = () => {
  if (isRecording.value) {
    stopRecordingInternal(); 
  } else {
    startRecording();
  }
}

const sendToAIAndSpeak = async (text: string) => {
  isLoadingAIResponse.value = true;

  try {
    const chatHistory = messages.value.map(msg => ({
      role: msg.isUser ? "user" : "assistant",
      content: msg.content
    }));
    
    const response = await fetch('/api/ai/chat/speech', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ chatHistory })
    });
    
    if (!response.ok) throw new Error('Network response was not ok.');
    
    const data = await response.json();
    const aiReply = data.reply;

    messages.value.push({ content: aiReply, isUser: false });
    await speakText(aiReply);
  } catch (error) {
    console.error('Error communicating with AI or speaking:', error);
    messages.value.push({ content: '抱歉，AI回复出错。', isUser: false });
  } finally {
    isLoadingAIResponse.value = false;
  }
};

const speakText = async (textToSpeak: string) => {
  if (!textToSpeak.trim()) return;

  const synthSpeechConfig = SpeechSDK.SpeechConfig.fromSubscription(speechKey, speechRegion);
  synthSpeechConfig.speechSynthesisVoiceName = "en-US-JennyNeural";
  const audioConfigSynth = SpeechSDK.AudioConfig.fromDefaultSpeakerOutput();
  const synthesizer = new SpeechSDK.SpeechSynthesizer(synthSpeechConfig, audioConfigSynth);

  return new Promise<void>((resolve, reject) => {
    synthesizer.speakTextAsync(
      textToSpeak,
      result => {
        if (result.reason === SpeechSDK.ResultReason.SynthesizingAudioCompleted) {
          console.log("AI Speech synthesized to speaker.");
        } else {
          console.error("AI Speech synthesis canceled, " + result.errorDetails);
        }
        synthesizer.close();
        resolve();
      },
      error => {
        console.error("Error synthesizing AI speech: " + error);
        synthesizer.close();
        reject(error);
      }
    );
  });
};
</script>

<style scoped>
.speech-container {
  display: flex;
  flex-direction: column;
  height: 700px;
  width: 900px;
  margin: 0 auto;
  background-color: white;
  border-radius: 20px;
  box-shadow: 0 15px 40px rgba(99, 102, 241, 0.15);
  padding: 30px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  position: relative;
  overflow: hidden;
}

.header {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px solid #eef2ff;
  margin-bottom: 20px;
  position: relative;
}

.header h2 {
  color: #6366f1;
  font-size: 2.2rem;
  margin-bottom: 10px;
  font-weight: 700;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header p {
  color: #6b7280;
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.chat-area {
  flex-grow: 1;
  overflow-y: auto;
  padding: 20px 15px;
  background-color: #f9fafc;
  border-radius: 15px;
  margin-bottom: 25px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}

.message-bubble {
  padding: 15px 20px;
  border-radius: 20px;
  max-width: 80%;
  word-wrap: break-word;
  line-height: 1.6;
  font-size: 1.05rem;
  position: relative;
  animation: fadeIn 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.user-message {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 5px;
  margin-left: 15%;
}

.user-message::before {
  content: "你";
  position: absolute;
  top: -25px;
  right: 0;
  font-size: 0.9rem;
  color: #6b7280;
}

.ai-message {
  background: white;
  color: #333;
  align-self: flex-start;
  border-bottom-left-radius: 5px;
  border: 1px solid #eef2ff;
  margin-right: 15%;
}

.ai-message::before {
  content: "AI助手";
  position: absolute;
  top: -25px;
  left: 0;
  font-size: 0.9rem;
  color: #6b7280;
}

.input-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 15px;
  border-top: 1px solid #eef2ff;
}

.record-button {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: white;
  border: none;
  padding: 15px 40px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-bottom: 15px;
  box-shadow: 0 6px 15px rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
}

.record-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.record-button.recording {
  background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(239, 68, 68, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

.recognized-text {
  margin-top: 15px;
  color: #555;
  font-size: 1rem;
  min-height: 20px;
  text-align: center;
  background: #f0f4ff;
  padding: 12px 25px;
  border-radius: 30px;
  width: 100%;
  max-width: 600px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.recognized-text i {
  color: #6366f1;
}

.loading-indicator {
  display: flex;
  justify-content: center;
  padding: 10px 0;
  gap: 10px;
  color: #6366f1;
}

.dot-flashing {
  position: relative;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #6366f1;
  color: #6366f1;
  animation: dotFlashing 1s infinite linear alternate;
  animation-delay: 0.5s;
}

.dot-flashing::before, .dot-flashing::after {
  content: '';
  display: inline-block;
  position: absolute;
  top: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #6366f1;
  color: #6366f1;
}

.dot-flashing::before {
  left: -15px;
  animation: dotFlashing 1s infinite alternate;
  animation-delay: 0s;
}

.dot-flashing::after {
  left: 15px;
  animation: dotFlashing 1s infinite alternate;
  animation-delay: 1s;
}

@keyframes dotFlashing {
  0% { background-color: #6366f1; }
  50%, 100% { background-color: rgba(99, 102, 241, 0.2); }
}

/* 滚动条样式 */
.chat-area::-webkit-scrollbar {
  width: 8px;
}

.chat-area::-webkit-scrollbar-track {
  background: #f0f4f8;
  border-radius: 8px;
}

.chat-area::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  border-radius: 8px;
}

.chat-area::-webkit-scrollbar-thumb:hover {
  background: #6366f1;
}

.decoration {
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  z-index: 0;
}

.dec-1 {
  width: 300px;
  height: 300px;
  background: #6366f1;
  top: -150px;
  right: -150px;
}

.dec-2 {
  width: 200px;
  height: 200px;
  background: #8b5cf6;
  bottom: -100px;
  left: -100px;
}

@media (max-width: 900px) {
  .speech-container {
    width: 95%;
    height: 600px;
  }
  
  .message-bubble {
    max-width: 85%;
  }
}

@media (max-width: 600px) {
  .speech-container {
    padding: 20px 15px;
    height: 550px;
  }
  
  .header h2 {
    font-size: 1.8rem;
  }
  
  .record-button {
    padding: 12px 30px;
    font-size: 1rem;
  }
  
  .message-bubble {
    max-width: 90%;
    padding: 12px 15px;
    font-size: 1rem;
  }
}
</style>

六、认识

这次界面优化工作让我深刻体会到，一个好的语音交互界面不仅需要强大的技术支撑，更需要从用户角度出发，打造自然、流畅的交互体验。我们将继续迭代优化，为用户提供更出色的英语学习工具。 

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