Encountering issues with Office.context.document.getFileAsync function

Question

Encountering issues with Office.context.document.getFileAsync function

I am experiencing a strange issue where, on the third attempt to extract a word document as a compressed file for processing in my MS Word Task Pane MVC app, it crashes.

Here is the snippet of code:

Office.context.document.getFileAsync(Office.FileType.Compressed, function (result) {
if (result.status == "succeeded") {
    var file = result.value;

    file.getSliceAsync(0, function (resultSlice) {
        //DO SOMETHING
    });
} else {
    //TODO: How to handle service faults?
}
});

The error code I receive is 5001. Any suggestions on how to resolve this would be greatly appreciated.

If you have any insights or thoughts, please do share.

Additional Details:

javascript ms-office apps-for-office

Answer 1

Answer №1

According to information from MSDN:

It is important to note that no more than two documents can be in memory at a time; otherwise, the getFileAsync operation will not succeed. To prevent this issue, utilize the File.closeAsync method after completing your work on a file.

Remember to always call File.closeAsync before attempting to read the file again in order to avoid any potential problems.

For further details, visit: https://msdn.microsoft.com/en-us/library/office/jj715284.aspx

Answer 2

According to information from MSDN:

It is important to note that no more than two documents can be in memory at a time; otherwise, the getFileAsync operation will not succeed. To prevent this issue, utilize the File.closeAsync method after completing your work on a file.

Remember to always call File.closeAsync before attempting to read the file again in order to avoid any potential problems.

For further details, visit: https://msdn.microsoft.com/en-us/library/office/jj715284.aspx

Answer 3

Answer №2

Here is an example showcasing the correct usage of this API. The existing example in MSDN may not be entirely accurate. This code has been tested in Word.

// To ensure data is sent to the server in base64 format.
function encodeBase64(docData) {
    var s = "";
    for (var i = 0; i < docData.length; i++)
        s += String.fromCharCode(docData[i]);
    return window.btoa(s);
}

// Initiating the process of retrieving a file by calling getFileAsync().
function getFileAsyncInternal() {
    Office.context.document.getFileAsync("compressed", { sliceSize: 10240 }, function (asyncResult) {
        if (asyncResult.status == Office.AsyncResultStatus.Failed) {
            document.getElementById("log").textContent = JSON.stringify(asyncResult);
        }
        else {
            getAllSlices(asyncResult.value);
        }
    });
}

// Retrieving all slices of the file from the host after "getFileAsync" completion.
function getAllSlices(file) {
    var sliceCount = file.sliceCount;
    var sliceIndex = 0;
    var docdata = [];
    var getSlice = function () {
        file.getSliceAsync(sliceIndex, function (asyncResult) {
            if (asyncResult.status == "succeeded") {
                docdata = docdata.concat(asyncResult.value.data);
                sliceIndex++;
                if (sliceIndex == sliceCount) {
                    file.closeAsync();
                    onGetAllSlicesSucceeded(docdata);
                }
                else {
                    getSlice();
                }
            }
            else {
                file.closeAsync();
                document.getElementById("log").textContent = JSON.stringify(asyncResult);

            }
        });
    };
    getSlice();
}

// Uploading the docx file to the server after obtaining all bits from the host.
function onGetAllSlicesSucceeded(docxData) {
    $.ajax({
        type: "POST",
        url: "Handler.ashx",
        data: encodeBase64(docxData),
        contentType: "application/json; charset=utf-8",
    }).done(function (data) {
        document.getElementById("documentXmlContent").textContent = data;
    }).fail(function (jqXHR, textStatus) {
    });
}

For more information, visit: https://github.com/pkkj/AppForOfficeSample/tree/master/GetFileAsync

I hope this proves helpful.

Answer 4

Here is an example showcasing the correct usage of this API. The existing example in MSDN may not be entirely accurate. This code has been tested in Word.

// To ensure data is sent to the server in base64 format.
function encodeBase64(docData) {
    var s = "";
    for (var i = 0; i < docData.length; i++)
        s += String.fromCharCode(docData[i]);
    return window.btoa(s);
}

// Initiating the process of retrieving a file by calling getFileAsync().
function getFileAsyncInternal() {
    Office.context.document.getFileAsync("compressed", { sliceSize: 10240 }, function (asyncResult) {
        if (asyncResult.status == Office.AsyncResultStatus.Failed) {
            document.getElementById("log").textContent = JSON.stringify(asyncResult);
        }
        else {
            getAllSlices(asyncResult.value);
        }
    });
}

// Retrieving all slices of the file from the host after "getFileAsync" completion.
function getAllSlices(file) {
    var sliceCount = file.sliceCount;
    var sliceIndex = 0;
    var docdata = [];
    var getSlice = function () {
        file.getSliceAsync(sliceIndex, function (asyncResult) {
            if (asyncResult.status == "succeeded") {
                docdata = docdata.concat(asyncResult.value.data);
                sliceIndex++;
                if (sliceIndex == sliceCount) {
                    file.closeAsync();
                    onGetAllSlicesSucceeded(docdata);
                }
                else {
                    getSlice();
                }
            }
            else {
                file.closeAsync();
                document.getElementById("log").textContent = JSON.stringify(asyncResult);

            }
        });
    };
    getSlice();
}

// Uploading the docx file to the server after obtaining all bits from the host.
function onGetAllSlicesSucceeded(docxData) {
    $.ajax({
        type: "POST",
        url: "Handler.ashx",
        data: encodeBase64(docxData),
        contentType: "application/json; charset=utf-8",
    }).done(function (data) {
        document.getElementById("documentXmlContent").textContent = data;
    }).fail(function (jqXHR, textStatus) {
    });
}

For more information, visit: https://github.com/pkkj/AppForOfficeSample/tree/master/GetFileAsync

I hope this proves helpful.

Answer 5

Answer №3

In addition to the helpful response from Keyjing Peng, I wanted to share a different approach when dealing with encoding for SharePoint REST uploads. Instead of using encodeBase64, it's recommended to convert the byte array to a Uint8Array before uploading to avoid file corruption in SharePoint libraries.

var uArray = new Uint8Array(docdata);

I hope this tip proves valuable to someone out there who may be searching for this specific information online...

Answer 6

In addition to the helpful response from Keyjing Peng, I wanted to share a different approach when dealing with encoding for SharePoint REST uploads. Instead of using encodeBase64, it's recommended to convert the byte array to a Uint8Array before uploading to avoid file corruption in SharePoint libraries.

var uArray = new Uint8Array(docdata);

I hope this tip proves valuable to someone out there who may be searching for this specific information online...

Answer 7

Answer №4

Check out the following link http://msdn.microsoft.com/en-us/library/office/jj715284(v=office.1501401).aspx

This link contains a method example:

var i = 0;
var slices = 0;

function getDocumentAsPDF() {

Office.context.document.getFileAsync("pdf",{sliceSize: 2097152}, function (result) {
    if (result.status == "succeeded") {
        // If the getFileAsync call succeeded, then
        // result.value will return a valid File Object.
         myFile = result.value;
         slices = myFile.sliceCount;
         document.getElementById("result").innerText = " File size:" + myFile.size + " #Slices: " + slices;

         // Iterate over the file slices.
         for ( i = 0; i < slices; i++) {
             var slice = myFile.getSliceAsync(i, function (result) {
                 if (result.status == "succeeded") {  
                     doSomethingWithChunk(result.value.data);
                     if (slices == i) // Means it's done traversing...
                     {
                         SendFileComplete();
                     }
                 }
                 else
                     document.getElementById("result").innerText = result.error.message;
                 });
         }
         myFile.closeAsync();
    }
    else
        document.getElementById("result2").innerText = result.error.message;
});

}

To make a change, switch "pdf" to "compressed" and create the doSomethingWithChunk() method that could potentially look like this:

function base64Encode(str) {
        return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function (match, p1) {
            return String.fromCharCode('0x' + p1);
        }));
    }

I have utilized this approach successfully for saving to Azure blob storage.

Of course, remember to also rename the method accordingly.

Answer 8

Check out the following link http://msdn.microsoft.com/en-us/library/office/jj715284(v=office.1501401).aspx

This link contains a method example:

var i = 0;
var slices = 0;

function getDocumentAsPDF() {

Office.context.document.getFileAsync("pdf",{sliceSize: 2097152}, function (result) {
    if (result.status == "succeeded") {
        // If the getFileAsync call succeeded, then
        // result.value will return a valid File Object.
         myFile = result.value;
         slices = myFile.sliceCount;
         document.getElementById("result").innerText = " File size:" + myFile.size + " #Slices: " + slices;

         // Iterate over the file slices.
         for ( i = 0; i < slices; i++) {
             var slice = myFile.getSliceAsync(i, function (result) {
                 if (result.status == "succeeded") {  
                     doSomethingWithChunk(result.value.data);
                     if (slices == i) // Means it's done traversing...
                     {
                         SendFileComplete();
                     }
                 }
                 else
                     document.getElementById("result").innerText = result.error.message;
                 });
         }
         myFile.closeAsync();
    }
    else
        document.getElementById("result2").innerText = result.error.message;
});

}

To make a change, switch "pdf" to "compressed" and create the doSomethingWithChunk() method that could potentially look like this:

function base64Encode(str) {
        return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function (match, p1) {
            return String.fromCharCode('0x' + p1);
        }));
    }

I have utilized this approach successfully for saving to Azure blob storage.

Of course, remember to also rename the method accordingly.

Encountering issues with Office.context.document.getFileAsync function

Answer №1

Answer №2

Answer №3

Answer №4

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