在IE11中打开createObjectURL创建的链接

Open links made by createObjectURL in IE11

本文关键字：创建 链接 createObjectURL IE11      更新时间：2023-09-26

为什么不能在下面的演示中打开链接:
http://html5-demos.appspot.com/static/a.download.html

你甚至不能右键单击并在新选项卡/窗口中打开它。浏览器中是否有需要自定义的设置?

这个演示使用了Blob URL，由于安全限制，IE不支持。

IE有自己的API来创建和下载文件，这个API叫做msSaveOrOpenBlob。

这是我的跨浏览器解决方案，适用于IE, Chrome和Firefox:

function createDownloadLink(anchorSelector, str, fileName){
    if(window.navigator.msSaveOrOpenBlob) {
        var fileData = [str];
        blobObject = new Blob(fileData);
        $(anchorSelector).click(function(){
            window.navigator.msSaveOrOpenBlob(blobObject, fileName);
        });
    } else {
        var url = "data:text/plain;charset=utf-8," + encodeURIComponent(str);
        $(anchorSelector).attr("download", fileName);
        $(anchorSelector).attr("href", url);
    }
}
$(function () {
    var str = "hi,file";
    createDownloadLink("#export", str, "file.txt");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<a id="export" class="myButton" download="" href="#">export</a>

这是下载任何文件为blob的函数。(在IE和非IE上测试)

var download_csv_using_blob = function (file_name, content) {
    var csvData = new Blob([content], { type: 'text/csv' });
    if (window.navigator && window.navigator.msSaveOrOpenBlob) { // for IE
        window.navigator.msSaveOrOpenBlob(csvData, file_name);
    } else { // for Non-IE (chrome, firefox etc.)
        var a = document.createElement("a");
        document.body.appendChild(a);
        a.style = "display: none";
        var csvUrl = URL.createObjectURL(csvData);
        a.href =  csvUrl;
        a.download = file_name;
        a.click();
        URL.revokeObjectURL(a.href)
        a.remove();
    }
};

注意:如果需要，请更改文件类型

如果数据来自Ajax，那么您可以添加

if (window.navigator.msSaveOrOpenBlob)
 xhttp.responseType = "arraybuffer";
else
 xhttpGetPack.responseType = "blob";

/////////////////////////////////////////////////

var a = document.createElement("a");
document.body.appendChild(a);
a.style.display = "none";
// IE
if (window.navigator.msSaveOrOpenBlob)
{
  a.onclick = ((evx) => 
  {
      var newBlob = new Blob([new Uint8Array(xhttpGetPack.response)]);
      window.navigator.msSaveOrOpenBlob(newBlob, "myfile.ts");
  });
  a.click();
}
else //Chrome and safari
{
  var file = URL.createObjectURL(xhttpGetPack.response);
  a.href = file;
  a["download"] = "myFile.ts";
  a.click();
  window.URL.revokeObjectURL(file);
}

        //File Object return in ajax Success in data variable
         var blob = new Blob([data]);
         if (navigator.appVersion.toString().indexOf('.NET') > 0) //For IE
          {
            window.navigator.msSaveOrOpenBlob(blob, "filename.ext");
          }
          else if (navigator.userAgent.toLowerCase().indexOf('firefox') >-1) 
              {
                var link = document.createElement('a');
                link.href = window.URL.createObjectURL(blob);
                link.download = "filename.ext";
                document.body.appendChild(link);//For FireFox <a> tag event 
                //not working
                link.click();
            }
          else
          {
                var link = document.createElement('a');
                link.href = window.URL.createObjectURL(blob);
                link.download = "filename.ext" 
                link.click();
          }

对于Internet Explorer 11的内部iframe下载，您需要使用parent.window.navigator.msSaveOrOpenBlob(blob, "filename.ext");

相关文章：