优化数据选择编辑器（请求接口）

src/components/app-upicker/app-upicker.vue

 <template>
-	<div style="position: relative;width: 100%;">
-		<el-select @change="onSelect" v-model="value" :disabled="disabled">
+		<el-select style="width: 100%;" size='small' @change="onSelect" v-model="value" :disabled="disabled" @visible-change="onSelectOpen">
 			<el-option v-for="(item, index) in items" :key="index" :label="item.label" :value="item.value"></el-option>
 		</el-select>
-	</div>
 </template>
 
 <script lang="ts">
@@ -120,6 +118,15 @@ export default class AppPicker extends Vue {
         this.fectchItemList(this.url);
 	}
 
+	/**
+     * 下拉重新加载数据
+     *
+     * @memberof AppPicker
+     */
+	public onSelectOpen() {
+		this.fectchItemList(this.url);
+	}
+
 	/**
 	 * 解析编辑器参数
 	 * @param {*} itemparams