angular 下载文件

        public Stream GetCodeSn()
        {            
            return File.OpenRead("e:\\工作xxxx.xlsx");
        }

        function exportData(name, data) {
            var urlObject = window.URL || window.webkitURL || window;
            var save_link = document.createElementNS("http://www.w3.org/1999/xhtml", "a");
            save_link.href = urlObject.createObjectURL(new Blob([data]));
            save_link.download = name;

            var event = document.createEvent("MouseEvents");
            event.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
            save_link.dispatchEvent(event);
        }

        $http({
            url: ‘/SvcWms/File/GetCodeSn‘,
            method: ‘GET‘,
            data: {},
            responseType: ‘arraybuffer‘,
            headers: {
                ‘Content-Type‘: ‘application/json‘
            }
        }).then(function (resp) {
            exportData(‘工作记录2019.xlsx‘, resp.data);
        });

$http.get(‘/SvcWms/File/GetCodeSn‘,{responseType: ‘arraybuffer‘}).then(function (resp) {
                            exportData(‘工作xxxx.xlsx‘, resp.data);
                        });