无法使用Angular JS

Question

在我的Angular JS应用程序中，通过$ http post。下载Excel工作簿。

我使用下面的代码并以JSON的形式传递信息作为有效负载，并通过角度$ http post web服务将其发送到服务器REST Web服务（使用Java Spring REST）使用来自JSON的信息并生成一个格式为application / vnd.ms-excel的Excel工作簿。如果我尝试使用“发送并保存”选项保存POSTMAN的响应以进行后端路由测试，则excel文件将以正确的格式保存（如果我提供response.xls）。但是使用Angular JS在$ http帖子的成功主体中的响应，我在该响应变量中获取二进制数据并使用FileSaver将其保存为二进制数据。

 myservice.getExcel = function (searchParam) {

    var data=  $http.post('http:localhost:8080/export/xls', 
             {
                searchParam: searchParam,

            }
        , 
            {headers: {
                'Content-type': 'application/json'
            }},{ responseType: 'arraybuffer' }).success(function (response, status, headers, config) {
    console.log(response);
            var blob = new Blob([response], { type: 'application/vnd.ms-excel' }),
                fileName = 'MyReport.xls';
            if (window.navigator.msSaveOrOpenBlob) {
                window.navigator.msSaveOrOpenBlob(blob, fileName);
            } else {
                 var objectUrl = URL.createObjectURL(blob);
                window.open(objectUrl);
                var anchor = angular.element('<a/>');
                anchor.css({ display: 'none' });
                angular.element(document.body).append(anchor);
                anchor.attr({
                    href: (window.URL || window.webkitURL).createObjectURL(blob),
                    target: '_blank',
                    download: fileName
                })[0].click();
                anchor.remove();
            }
        }).error(function (data, status, header, config) {
            console.log("Error"+data);
        });

我也有FileSaver但得到相同的结果。请建议如何解决此问题。 在打开excel之前，我得到的是“您要打开的文件”xls“，其格式与文件扩展名不同。验证该文件未损坏” 响应以字节形式出现。 我在这样的excel文件中获取以下数据， ��ࡱ�;��
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Answer 1

未经测试......但我会试一试

var opts = {
  method: 'POST',
  url: 'http:localhost:8080/export/xls',
  headers: {'Content-type': 'application/json'},
  data: {searchParam: searchParam},
  responseType: 'blob'
}

var data = $http(opts)
.then(function(response) {
  fileName = 'MyReport.xls';
  saveAs(response.data, fileName);
}, function (err) {
  console.log("Error", err);
});