优化接口下拉列表支持筛选功能, 修复清空接口时获取到undefined问题，修复keepalive页面跳转报错的问题

src/components/ec_api/BasicConfig.vue

@@ -164,7 +164,7 @@ function handle_api_data() {
     })
   })
   // 更新first_tab_api对应的值
-  store.state.ecApiModule.first_tab_api_id = SelectApi.value[0]['id']
+  store.state.ecApiModule.first_tab_api_id = SelectApi.value[0] ? SelectApi.value[0]['id'] : 0
   // 生成被选择的api参数对象
   SelectApiId.value.forEach(api_id => {
     if (ApiParams.value.hasOwnProperty(api_id)) {
@@ -293,7 +293,7 @@ onMounted(() => {
       <el-col :span="6">
         <label class="name-label">接口：</label>
 
-        <el-select v-model="SelectApiId" placeholder="请选择" style="width: 240px" size="default" multiple collapse-tags
+        <el-select v-model="SelectApiId" placeholder="请选择" style="width: 240px" size="default" multiple collapse-tags filterable
                    collapse-tags-tooltip :clearable="true" @change="api_on_change">
           <el-option
               v-for="item in Api"

src/components/ec_api/TabArea.vue

@@ -305,7 +305,7 @@ const ace_options = {
           @select="handleParamsSelect"
       >
         <el-table-column type="selection" width="50" :selectable="checkboxFilter"/>
-        <el-table-column label="字段名" width="120">
+        <el-table-column label="字段名" width="200">
           <template v-slot="scope">
             <span v-if="scope.row.is_preset">{{ scope.row.param }}</span>
             <span v-else><el-input type="text" placeholder="输入字段名" v-model="scope.row.param"></el-input></span>

src/layout/index.vue

@@ -21,9 +21,9 @@ const route = useRoute()
         <el-main>
           <router-view v-slot="{Component}">
             <keep-alive>
-              <component :is="Component" v-if="route.meta.keepAlive"/>
+              <component :is="Component" :key="route.name" v-if="route.meta.keepAlive"/>
             </keep-alive>
-            <component :is="Component" v-if="!route.meta.keepAlive"/>
+            <component :is="Component" :key="route.name" v-if="!route.meta.keepAlive"/>
           </router-view>
         </el-main>
       </el-container>