fix：修复小问题

frontend/src/components/home/DevicePerformanceTabel.vue

@@ -57,8 +57,10 @@ onMounted(() => {
     }
   }
 
-  axios.get('/api/device_communication/performance/' + props.type + '/' + props.protocolName)
+  axios.get('/api/device_communication/performance/' + props.type + '/' + props.protocolName + '/')
   .then((res) => {
+    console.log("table title", res.data);
+    
     tableTitles.value = res.data
     for (let key of res.data) {
       tableData.value[0][key] = ''
@@ -69,6 +71,30 @@ onMounted(() => {
   })
 })
 
+onBeforeUnmount(() => {
+  // 关闭 websocket
+  if (table_websocket) {
+    table_websocket.close()
+  }
+
+  // 关闭模拟设备
+  if (openSimulateDevice.value && props.type === '2') {
+    let body = {
+      protocol_name: props.protocolName,
+      status: false,
+      device_name: props.devName
+    } 
+    
+    request.post('/api/change_simulate_device/', body)
+    .then((res) => {
+      console.log(res);
+    })
+    .catch((err) => {
+      console.log(err);
+    })
+  }
+})
+
 const emits = defineEmits(['deleteTable'])
 
 const del = () => {
@@ -87,7 +113,6 @@ const changeSimulateDevice = () => {
     status: openSimulateDevice.value,
     device_name: props.devName
   } 
-  console.log(body);
   
   request.post('/api/change_simulate_device/', body)
   .then((res) => {