axios 利用new FileReader() 下载文件获取返回的错误信息

this.axios({

method: "post",

url: url,

data: data,

responseType: "blob"

})

.then(res => {

const data = res.data

let r = new FileReader()

r.onload = function () {

try {

let resData = JSON.parse(this.result)

console.log(resData)

if (resData && resData['code'] && resData['code'] != '1000') {

alert(resData.msg);//弹出返回的错误msg

}

} catch (err) {

let fileName = '下载文件名.xls'

// 兼容ie11

if (window.navigator.msSaveOrOpenBlob) {

try {

const blobObject = new Blob([data])

window.navigator.msSaveOrOpenBlob(blobObject, fileName)

} catch (e) {

console.log(e)

}

return

}

this.download(data, fileName)

alert（'导出成功'）

}

r.readAsText(data) // FileReader的API

})

.catch(e => {

let msg = "网络异常";

_that.isCanClick = true

this.$Message.error(msg);

});

　// 下载文件

download(data, name) {

if (!data) {

return;

}

let url = window.URL.createObjectURL(new Blob([data]));

let link = document.createElement("a");

link.style.display = "none";

link.href = url;

link.setAttribute("download", name);

document.body.appendChild(link);

link.click();

巴特西

axios 利用new FileReader() 下载文件获取返回的错误信息

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