getSliceAsync仅返回第一个数据切片

如何解决getSliceAsync仅返回第一个数据切片

我正在开发一个办公室365词网络插件，其中我需要将当前打开的文件上传到我的服务器。为此，我正在尝试使用以下代码获取文件数据。

在开发服务器上运行代码时， getSliceAsync（）方法仅返回第一个分片数据。 在调试时，该方法达到断点10次，但对于切片索引0仅返回一次输出。

即使对于本地计算机上的大文件，代码也可以正常工作，但是崩溃了，并且在开发服务器上未返回任何内容。

这是我的代码：

Office.context.document.getFileAsync(Office.FileType.Compressed,{ sliceSize: 65536 },function (result) {
    if (result.status == "succeeded") {
        // If the getFileAsync call succeeded,then result.value will return a valid File Object
        var myFile = result.value;
        var filename1 = myFile.name;
        console.log(filename1);
        var sliceCount = myFile.sliceCount;
        var slicesReceived = 0,isAllSlicesSuccess = true,docdataSlices = [];
        // document.getElementById("result").innerText = "File size:" + myFile.size + "#Slices: " + sliceCount;
        console.log(" File size:" + myFile.size + " #Slices: " + sliceCount,"");
   makeProgress(20);

        // Iterate over the file slices
        for (var i = 0; i < sliceCount && isAllSlicesSuccess; i++) {
            
            var diffPercent = ((i / sliceCount) * 100);
            
           
            myFile.getSliceAsync(i,function (sliceResult) {
                if (sliceResult.status == "succeeded") {
                    if (!isAllSlicesSuccess) { // Some slice has failed to get,no need to continue
                        console.log("Error","One slice failed to get");

                        return;
                        console.log(sliceResult);
                    }
                    console.log('sliceResult',sliceResult);
                    console.log("Success","i: " + i);
                    console.log("++slicesReceived  ",slicesReceived );
                    console.log(" sliceCount",sliceCount );
                    console.log("++slicesReceived == sliceCount",slicesReceived == sliceCount);

                    // One chunk was got,store it in a temporal array


                         //  ++slicesReceived;
                    // or you can do something with the chunk,such as sent it to a third party server
                    docdataSlices[sliceResult.value.index] = sliceResult.value.data;
                    if (++slicesReceived == sliceCount) {
                        getAllSlicesTime = Date.now();
                        var performance = (getAllSlicesTime - startTime) / 1000.0;

                        console.log("Success","All slices has been get,Seconds: " + performance);

                        // All slices have been received
                        myFile.closeAsync(function (closeRes) {
                            if (closeRes.status == "succeeded") {
                                console.log("Close Success","Success");
                               // DUClick();
                                
                            }
                            else {
                                console.log("Close Error",closeRes.error.message);
                            }
                        });
                        onGetAllSlicesSucceeded(docdataSlices,false);
                           
                    }
                }
                else {
                    isAllSlicesSuccess = false;
                    myFile.closeAsync(function (closeRes) {
                        if (closeRes.status == "succeeded") {
                            console.log("Close Success","Success");
                           // DUClick();
                        }
                        else {
                            console.log("Close Error",closeRes.error.message);
                        }
                    });

                    console.log("Get Slice Error:",sliceResult.error.message);
                }
            });
        }
    }
    else {
        getFileTime = Date.now();
        var performance = (getFileTime - startTime) / 1000.0;
        console.log('Get File Error:',"Seconds: " + performance + " " + result.error.message);
    }
});