工具（file-saver、xlsx、script-loader）

npm install -S file-saver xlsx

npm install -D script-loader

按钮

 <el-upload
  class="upload-demo"
  action=""
  :on-change="handleChange"
  :on-exceed="handleExceed"
  :on-remove="handleRemove"
  :file-list="fileListUpload"
  :limit="limitUpload" //limitUpload = 1限制只能上传1个文件
  accept="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet,application/vnd.ms-excel"
  //accept为默认打开的可上传的文件格式
  :auto-upload="false">
  <el-button size="small" type="primary">点击上传</el-button>
  <div slot="tip" class="el-upload__tip">只 能 上 传 xlsx / xls 文 件</div>
</el-upload>

方法

handleChange(file, fileList) {
  this.fileTemp = file.raw;
  if (this.fileTemp) {
  if (
    this.fileTemp.type ==
      "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" ||
    this.fileTemp.type == "application/vnd.ms-excel"
  ) {
    this.importfxx(this.fileTemp);
  } else {
    this.$message({
      type: "warning",
      message: "附件格式错误，请删除后重新上传！",
    });
  }
} else {
  this.$message({
    type: "warning",
    message: "请上传附件！",
  });
}
},

handleRemove(file, fileList) {
  this.fileTemp = null;
},
importfxx(obj) {
let _this = this; // 通过DOM取文件数据
this.file = obj;
var rABS = false; //是否将文件读取为二进制字符串
var f = this.file;
var reader = new FileReader();
//if (!FileReader.prototype.readAsBinaryString) {
FileReader.prototype.readAsBinaryString = function (f) {
  var binary = "";
  var rABS = false; //是否将文件读取为二进制字符串
  var pt = this;
  var wb; //读取完成的数据
  var outdata;
  var reader = new FileReader();
  reader.onload = function (e) {
    var bytes = new Uint8Array(reader.result);
    var length = bytes.byteLength;
    for (var i = 0; i < length; i++) {
      binary += String.fromCharCode(bytes[i]);
    }
    var XLSX = require("xlsx");
    if (rABS) {
      wb = XLSX.read(btoa(fixdata(binary)), {
        //手动转化
        type: "base64",
      });
    } else {
      wb = XLSX.read(binary, {
        type: "binary",
      });
    }
    outdata = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]);
    console.log(outdata);//接收的数据
  };
  reader.readAsArrayBuffer(f);
};

if (rABS) {
  reader.readAsArrayBuffer(f);
} else {
  reader.readAsBinaryString(f);
}
},