axios導出 exer

this.axios({  url: `${this.domain}ledger/people/exportExcel`,  responseType: 'blob',  method: 'post',  data: params}).then(res => {  if(res.data) {    let blob = res.data    let a = document.createElement('a')    let url = window.URL.createObjectURL(blob)    let filename = '重點人.xls'    a.href = url    a.download = filename    a.click()    window.URL.revokeObjectURL(url)  }})