【发布时间】:2020-07-06 12:07:58
【问题描述】:
我已经编写了将 json 转换为 csv 文件以供下载的 javascript 代码。每个文件都可以完美地转换并使用正确的文件名下载,除了一个文件存在文件名问题。在 Chrome 上,使用 abc_def_ghi.csv 之类的命名约定下载其他文件,但只有使用“下载”文件名下载的文件没有 csv 扩展名。但是,当您“打开方式”记事本时,它会显示正确的 csv 数据。我不确定它有什么问题。同样的问题也出现在 Firefox 上,除了它设置了一些不符合约定的文件名并设置了扩展名,但每次文件名都更改为相同的 csv。
这是 Firefox 要求“保存”时的屏幕截图
这是下载两次的同一个 csv 文件的文件名。
这是从 chrome 下载的文件的屏幕截图。
这是我编写的将 json 转换为 csv 并下载的代码。
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 = "";
//this will remove the blank-spaces from the title and replace it with an underscore
fileName += ReportTitle.replace(/ /g, "_");
//Check for ie
var ie = getInternetExplorerVersion();
if (ie == -1) {
//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);
} else {
var blob = new Blob([CSV], { type: "text/csv;charset=utf-8;" });
navigator.msSaveBlob(blob, fileName + ".csv")
}
}
【问题讨论】:
标签: javascript json export-to-csv