修改导出重复导出的问题

src/views/setting/user/index.vue

@@ -42,7 +42,11 @@
 					<sc-table-column label="序号" align="center" type="index"></sc-table-column>
 					<template #avatar="scope">
 						<div class="userImg">
-							<el-avatar :src="scope.row.avatar" size="small"></el-avatar>
+							<el-avatar :src="scope.row.avatar" size="small">
+								<span v-if="scope.row.avatar== ''">
+									{{scope.row.name.substring(0, 1)}}
+								</span>
+							</el-avatar>
 						</div>
 					</template>
 					<template #roles="scope">
@@ -312,6 +316,7 @@
 				}
 			},
 			async exportData() {
+				if(this.exportShow) return
 				const res = await this.$API.system.user.export.post();
 				if(res.code == 200){
 					this.$message.success('开始导出');