vue使用el-upload上传，上传错误文件，名称还会显示

背景：上传不符合后缀的文件，但是还是在页面中显示，使用的是http-request方法

代码：

<el-upload multiple class="avatar-uploader" action="#" :before-upload="(e, fileList) => {beforeUpload(e, fileList, scope.row, scope.$index)}"  :file-list="scope.row.fileList"  :on-remove="handleRemove()" :before-remove="(e, fileList) => {beforeRemove(e, fileList, scope.row, scope.$index)}" :http-request="(e, fileList) => {handleChange(e, fileList, scope.row, scope.$index)}"><el-button style="background-color: #fff; color: gray; border-color: gray;"  size="small" icon="el-icon-circle-plus-outline" type="primary"></el-button>
</el-upload>

// 限制上传文件格式limitChange(file, row) {var limitFile = true;var msg = "";//获取文件后缀const fileSuffix = file.name.substring(file.name.lastIndexOf(".") + 1);if (row.templateType === 1) {// 上传图片jpg、pngconst whiteList = ["jpg", "png"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传图片只能是jpg、png格式');limitFile = false;}} else if (row.templateType === 2) {// 上传压缩文件 zip、rarconst whiteList = ["zip", "rar"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传图片只能是zip、rar格式');limitFile = false;}} else if (row.templateType === 3) {// 上传音视频 mp3、mp4const whiteList = ["mp3", "mp4"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传图片只能是mp3、mp4格式');limitFile = false;}} else if (row.templateType === 5) {// 上传文档：pdf、doc、docx、ppt、pptxconst whiteList = ["pdf", "doc", "docx", "ppt", "pptx"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传图片只能是pdf、doc、docx、ppt、pptx格式');limitFile = false;}} else if (row.templateType === 6) {// CAD:dwg,dfxconst whiteList = ["dwg", "dfx"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传文件只能是dwg、dfx格式');limitFile = false;}} else if (row.templateType === 7) {// 三维模型：skp,max,fbxconst whiteList = ["skp", "max", "fbx"];if (whiteList.indexOf(fileSuffix) === -1) {this.$message.error('上传文件只能是skp、max, fbx格式');limitFile = false;}}return limitFile;},// 上传附件，有时间和上传图片一起封装成一个方法handleChange(e, fileList, row, index) {var flag = this.limitChange(e.file, row);if (!flag) {// 主要是这一句e.onError()return;}var vm = thislet file = e.raw...}