Question

我尝试下载excel文件并在将其发送给用户之前进行检查。当我在var response - oReq.response上设置断点时，我看到oReq.response为空。当我检查我的网络选项卡时，我看到响应不是null，而是它是预期的excel文件。为什么excel文件没有通过回调？

var oReq = new XMLHttpRequest();
oReq.open("GET", service, true);
oReq.responseType = "arraybuffer";

oReq.onload = function (oEvent) {
    var response = oReq.response;
    if (response === parseInt(response, 10)) {
        alert("That query had no results");
        $("#dialog").dialog("close");
    }
    else {
        var blob = new Blob([response], { type: "application/vnd.ms-excel" });
        var objectUrl = URL.createObjectURL(blob);
        window.location = objectUrl;
        //saveAs(blob, 'Ad_Hoc_Results.xls');
        $("#dialog").dialog("close");
    }
};
oReq.send();

响应标题：

Access-Control-Allow-Headers:Content-Type
Access-Control-Allow-Methods:GET,PUT,POST,DELETE,OPTIONS
Access-Control-Allow-Origin:*
Cache-Control:no-cache
Content-Disposition:attachment; filename=AdHocReport.xls
Content-Length:6656
Content-Type:application/vnd.ms-excel
Date:Mon, 20 Jul 2015 19:56:50 GMT
Expires:-1
Pragma:no-cache
Server:Microsoft-IIS/8.0
X-AspNet-Version:4.0.30319
X-Powered-By:ASP.NET
X-SourceFiles:=?UTF-8?B?QzpcRGV2XE5KVEFcTGFuZUNsb3N1cmVBcGlcYXBpXHJlcG9ydFxHZXRBZEhvY1F1ZXJ5UmVwb3J0?=

arraybuffer javascript ajax请求返回null作为响应

0 个答案: