axios --- post请求json格式参数实现下载功能

 this.$axios({
                    url: ‘/dlServiceOrder/download‘,
                    data: params,
                    method: "post",
                    contentType: "application/json;charset=utf-8",
                    responseType: "blob",
                }).then(res=>{
                download(res.data,‘要导出的文件名‘+formatDate(new Date())+‘.xlsx‘)
            })

export function download (data,titName) {
    if(!data){
        return
    }
    const blob = new Blob([data],{type: "application/vnd.ms-excel"})
    const fileName = titName?titName: ‘导入模板.xls‘
    if (‘download‘ in document.createElement(‘a‘)) { // 非IE下载
        const elink = document.createElement(‘a‘)
        elink.download = fileName
        elink.style.display = ‘none‘
        elink.href = URL.createObjectURL(blob)
        document.body.appendChild(elink)
        elink.click()
        URL.revokeObjectURL(elink.href) // 释放URL 对象
        document.body.removeChild(elink)
    } else { // IE10+下载
        navigator.msSaveBlob(blob, fileName)
        navigator.msSaveBlob(blob)
    }
}