如何使用javascript将json数据导出到excel文件？

Question

我有需要导出到Excel工作表的json数据.我试过了

window.open('data:application/vnd.ms-excel,' + encodeURIComponent( $('#tableId').html()));

但这仅适用于html表.

Answer 1

$(document).ready(function() {
  $('button').click(function() {
    var data = $('#txt').val();
    if (data == '')
      return;

    JSONToCSVConvertor(data, "Vehicle Report", true);
  });
});

function JSONToCSVConvertor(JSONData, ReportTitle, ShowLabel) {
  //If JSONData is not an object then JSON.parse will parse the JSON string in an Object
  var arrData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;

  var CSV = '';
  //Set Report title in first row or line

  CSV += ReportTitle + '\r\n\n';

  //This condition will generate the Label/Header
  if (ShowLabel) {
    var row = "";

    //This loop will extract the label from 1st index of on array
    for (var index in arrData[0]) {

      //Now convert each value to string and comma-seprated
      row += index + ',';
    }

    row = row.slice(0, -1);

    //append Label row with line break
    CSV += row + '\r\n';
  }

  //1st loop is to extract each row
  for (var i = 0; i < arrData.length; i++) {
    var row = "";

    //2nd loop will extract each column and convert it in string comma-seprated
    for (var index in arrData[i]) {
      row += '"' + arrData[i][index] + '",';
    }

    row.slice(0, row.length - 1);

    //add a line break after each row
    CSV += row + '\r\n';
  }

  if (CSV == '') {
    alert("Invalid data");
    return;
  }

  //Generate a file name
  var fileName = "MyReport_";
  //this will remove the blank-spaces from the title and replace it with an underscore
  fileName += ReportTitle.replace(/ /g, "_");

  //Initialize file format you want csv or xls
  var uri = 'data:text/csv;charset=utf-8,' + escape(CSV);

  // Now the little tricky part.
  // you can use either>> window.open(uri);
  // but this will not work in some browsers
  // or you will not get the correct file extension    

  //this trick will generate a temp <a /> tag
  var link = document.createElement("a");
  link.href = uri;

  //set the visibility hidden so it will not effect on your web-layout
  link.style = "visibility:hidden";
  link.download = fileName + ".csv";

  //this part will append the anchor tag and remove it after automatic click
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
}

.txtarea {
  max-width: 100%;
  min-height: 200px;
  display: block;
  width: 100%;
}

.mydiv {
  padding: 10px;
}

.gen_btn {
  padding: 5px;
  background-color: #743ED9;
  color: white;
  font-family: arial;
  font-size: 13px;
  border: 2px solid black;
}

.gen_btn:hover {
  background-color: #9a64ff;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class='mydiv'>
  <textarea id="txt" class='txtarea'>[{"Vehicle":"BMW","Date":"30, Jul 2013 09:24 AM","Location":"Hauz Khas, Enclave, New Delhi, Delhi, India","Speed":42},{"Vehicle":"Honda CBR","Date":"30, Jul 2013 12:00 AM","Location":"Military Road,  West Bengal 734013,  India","Speed":0},{"Vehicle":"Supra","Date":"30, Jul 2013 07:53 AM","Location":"Sec-45, St. Angel's School, Gurgaon, Haryana, India","Speed":58},{"Vehicle":"Land Cruiser","Date":"30, Jul 2013 09:35 AM","Location":"DLF Phase I, Marble Market, Gurgaon, Haryana, India","Speed":83},{"Vehicle":"Suzuki Swift","Date":"30, Jul 2013 12:02 AM","Location":"Behind Central Bank RO, Ram Krishna Rd by-lane, Siliguri, West Bengal, India","Speed":0},{"Vehicle":"Honda Civic","Date":"30, Jul 2013 12:00 AM","Location":"Behind Central Bank RO, Ram Krishna Rd by-lane, Siliguri, West Bengal, India","Speed":0},{"Vehicle":"Honda Accord","Date":"30, Jul 2013 11:05 AM","Location":"DLF Phase IV, Super Mart 1, Gurgaon, Haryana, India","Speed":71}]</textarea>
  <button class='gen_btn'>Generate File</button>
</div>

点击这里观看它在JSfiddle中工作.

Answer 2

如果 csv 格式适合您的需要，那么可以像本主题一样轻松完成。

否则，您将必须手动将 JSON 解析为 Excel 文件的“XML”格式（因为我不知道有任何库执行此操作）。在这种情况下，您将必须研究 Excel 文件格式，此MSDN 博客对此进行了解释。

干杯