vue iview 导入excel文件（upload）

1<Upload 
2                    ref="upload"
3                    action="/api/book/excel/import"    
4                    name="excel-file"
5                    :show-upload-list="true"
6                    :on-format-error="handleFormatError"
7                    :on-success="handleSuccess"
8                    :on-error="handleError"
9                    :format ="['xlsx','xls']">
10                        <Button type="info" icon="ios-cloud-upload-outline">批量导入</Button>
11                </Upload>
12
13 handleFormatError(file){
14                this.$Notice.warning({
15                    title: '文件格式不正确',
16                    desc: '文件 ' + file.name + ' 格式不正确，请上传.xls,.xlsx文件。'
17                })
18            },
19            handleSuccess(res,file){
20                if(res.errcode === 0){
21                    this.dialoLead = false
22                    this.$Message.success("数据导入成功！")
23                    this._getBookList()
24                    this.$refs.upload.clearFiles()
25                }
26            },
27            handleError(error,file){
28                this.$Message.error("数据导入失败！")
29            },