如何在angularjs控制器

Question

我想在angularjs

按钮上下载文件

 <button ng-click=downloadfile()>download</button>

在控制器中

  $scope.downloadfile=function()
        {
            //
        }

我必须在downloadfile函数中编写哪些功能，请您解释

Answer 1

在downloadFile()函数中写出来。

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

    //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 is an example file to download, use yours

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

Answer 2

$ scope.downloadFile = function（doc）{

ConcurrentHashMap<Integer,String> cmap = new ConcurrentHashMap<> ();
cmap.computeIfAbsent (1, e-> {cmap.remove (1); return "x";});