javascript - Download Excel file from server and save on client -


i have javascript app , api creates excel file , returns byte array following headers:

content-type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet content-disposition:attachment; filename=list.xlsx

when go excel resource api url i'm prompted download excel file. if so, downloads fine , opens in excel. good.

now problem:

what don't want expose api url in user's browser window, goal to:

  • download excel file via ajax xmlhttprequest
  • store contents (byte array) in blob
  • create data uri blob
  • open data uri in popup, prompts user download excel file

what have this:

it downloads file, when try open file, excel doesn't recognize valid excel file.

// "data" contents server  var reader = new filereader(); var blob = new blob([data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' }); reader.readasdataurl(blob);  reader.onloadend = function (e) {     window.open(reader.result, 'excel', 'width=20,height=10,toolbar=0,menubar=0,scrollbars=no', '_blank'); }

i got working. had add following xmlhttprequest object:

responsetype: 'arraybuffer'

but doesn't work in ie, because ie cannot open data uris. not ie11.

anyway found a great library called filesaver.js handles saving files major browsers (including ie10+)


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