增加键盘按下事件（Enter）

src/App.vue

@@ -11,10 +11,10 @@
       <Input v-model="question" type="textarea" :autosize="{ minRows: 4, maxRows: 6 }" placeholder="输入你的问题" />
       <Row class="ivu-mt">
         <Col>
-          <Button type="primary" size="large" icon="md-send" :loading="loading" @click="handleSend">发送</Button>
+        <Button type="primary" size="large" icon="md-send" :loading="loading" @click="handleSend">发送</Button>
         </Col>
         <Col>
-          <Button size="large" class="ivu-ml" icon="md-add" :disabled="loading" @click="handleNewChat">新对话</Button>
+        <Button size="large" class="ivu-ml" icon="md-add" :disabled="loading" @click="handleNewChat">新对话</Button>
         </Col>
       </Row>
     </div>
@@ -32,7 +32,19 @@ export default {
       dialogs: []
     }
   },
+  mounted() {
+    // 增加键盘按下事件
+    document.addEventListener('keydown', this.handleKeyDown)
+  },
+  beforeDestroy() {
+    document.removeEventListener('keydown', this.handleKeyDown)
+  },
   methods: {
+    handleKeyDown(event) {
+      if (event.keyCode === 13) { // keyCode为13表示Enter键
+        this.handleSend()
+      }
+    },
     handleSend() {
       if (this.loading || this.question === '') return;
       this.loading = true;
@@ -75,7 +87,7 @@ export default {
       const source = fetchEventSource(apiUrl, {
         method: 'POST',
         headers: {
-            'Content-Type': 'application/json'
+          'Content-Type': 'application/json'
         },
         body: JSON.stringify(body),
         onopen: (response) => {