如何使用 cordova api 将照片上传到 azure blob 存储?

how to upload a photo to azure blob storage using cordova api?

我正在尝试使用 Cordova api 将照片从移动设备上传到 Azure Blob 存储。我似乎无法让它工作。任何想法都会有很大帮助。

上传到 blob 的数据如下所示。

start ---->

--+++++org.apache.cordova.formBoundary

Content-Disposition: form-data; name="file"; filename="test"

Content-Type: image/jpeg

Content-Length: 46785

���� ....

<--- end


我的代码:

/*Cordova Camera API calls*/
$scope.takePic = function (type) {

    if (navigator.camera != undefined) {
        if (type == 'PHOTOLIBRARY')
            type = Camera.PictureSourceType.PHOTOLIBRARY;
        else if (type == 'CAMERA')
            type = Camera.PictureSourceType.CAMERA;

        var options = {
            quality: 45,
            destinationType: Camera.DestinationType.DATA_URL,
            sourceType: type,
            allowEdit: true,
            encodingType: Camera.EncodingType.JPEG,
            saveToPhotoAlbum: false
        }
        navigator.camera.getPicture(onSuccess, onFail, options); 
    }
}

$scope.message = "Add an image";
var onSuccess = function (DATA_URL) {
    $scope.message = "Choose another image"; 
    $scope.postForm.onFileSelect = DATA_URL;
    $scope.$apply();
};
var onFail = function (e) {
    $scope.picData = null; 
    $scope.message = "On fail " + e;
};

//$scope.blobSasUrl is url to upload to azure blob storage
var xhr = new XMLHttpRequest();
xhr.onerror = fail;
xhr.onloadend = uploadCompleted;
xhr.open("PUT", $scope.blobSasUrl);
xhr.setRequestHeader('x-ms-blob-type', 'BlockBlob');
xhr.setRequestHeader('x-ms-blob-content-type', 'image/jpeg');
xhr.send($scope.postForm.onFileSelect);

编辑----- //我正在使用Camera.DestinationType.DATA_URI。我也试过 FILE_URI.

//This is not working (error)
var reader = new FileReader();
reader.onloadend = function(evt) {
    console.log(evt.target.result);  //nothing happens here
}
reader.readAsDataURL(file);  //file is either DATA_URI or FILE_URI

在您的 Azure 帐户上创建一个 blob 存储服务,将 blob 存储库导入您的网站。将图像发送到您在 Azure 上托管的网站,然后分拆一个任务以将其发送到您的 blob 存储。您使用 Cordova 作为客户端这一事实无关紧要。服务器应该不知道平台客户端是谁,只是如何处理请求。

我通过将它转换为 base64 字符串来让它工作。你可以用 javascript.

来做到这一点