You would need to pass the responseType in your service call

$http.post('/Service-URL', dataTO, {responseType: 'arraybuffer'});

then in the success of your data call this should open up pdf in a new window:-

    getDocument()
        .success(function(data) {
            var file = new Blob([data], { type: 'application/pdf' });
            var fileURL = URL.createObjectURL(file);
            window.open(fileURL);
    })

From this answer :- https://stackoverflow.com/a/21730535/3645957 by https://stackoverflow.com/users/2688545/michael

The string from the response seem to be Base-64 encoded (ref. fiddle). You can decode it using fetch() (or XMLHttpRequest() for older browsers):

fetch("data:application/pdf;base64," + response.data)
  .then(function(resp) {return resp.blob()})
  .then(function(blob) {
    FileSaver.saveAs(blob, 'foo.pdf')
  });

Found the solution here it is, i was sending byte array from spring controller which is in the form like %PDF-1 %����. So i send base64 encoded string from spring controller and send the base64 encoded string to browser and it works.

javascript code :

var arrrayBuffer = base64ToArrayBuffer(data); //data is the base64 encoded string
function base64ToArrayBuffer(base64) {
    var binaryString = window.atob(base64);
    var binaryLen = binaryString.length;
    var bytes = new Uint8Array(binaryLen);
    for (var i = 0; i < binaryLen; i++) {
        var ascii = binaryString.charCodeAt(i);
        bytes[i] = ascii;
    }
    return bytes;
}
var blob = new Blob([arrrayBuffer], {type: "application/pdf"});
var link = window.URL.createObjectURL(blob);
window.open(link,'', 'height=650,width=840');

convert byte array to base64 encoded string in spring controller

String encodedString = Base64.getEncoder().encodeToString(bytearrayofpdf);