使用Web API在Ionic应用程序中上载文件

Question

我的问题如下.

我已经给了WEB API我必须添加板图片.

我要做什么？

• 用户应该可以从手机中选择图像
• 用户可以添加板名
• 当用户点击提交时,输入的电路板名称和电路板图像应使用Web API和PUT方法发布.以下是WEB API详细信息

WEB API详细信息

头

• 网址:https://example.com
• 内容类型:| 内容类型|
• 方法:PUT

数据

• board_id:321
• board_title:| 标题|
• board_background:| 档案|

我已经使用cordovaImagePicker插件来选择图像,然后我无法将其上传到服务器.

我可以使用cordova文件传输插件,但我认为在这种情况下无法帮助我,因为没有指定的地方来存储图像.所有文件管理都由WEB API完成,我们只需要用Data发布文件.

Answer 1

在尝试了很多解决方案后,我得到了以下答案.

Board.html

    <ion-view>
        <ion-nav-bar class="bar">
            <ion-nav-title>
                <h1 class="title">
                    Create Board
                </h1>
            </ion-nav-title>
        </ion-nav-bar>
        <form name="boardForm" ng-submit="addBoard(data)">
            <ion-content padding="false" scroll="true" has-bouncing="false">
                <div id="form">
                    <div style="text-align: center; padding-top: 2%; padding-bottom: 2%;">
                        <div id="image-preview">
                            <label for="image-upload" id="image-label"><img src="{{ImagePrefix}}/task_plus.png" alt=""/></label>
                            <input type="file" name="board_background" id="image-upload" file-model="data.board_background">
                        </div>
                        <p>Add Cover</p>
                    </div>
                    <ion-list>
                        <ion-item style="background-color: #F8F8F8;">
                            <label class="control-label" for="board_name">BOARD NAME</label>
                        </ion-item>
                        <ion-item ng-class="{true:'error'}[submitted && boardForm.board_title.$invalid]">
                            <input type="text" id="board_name" ng-model="data.board_title"
                                   placeholder="Add a Name" name="board_title" required>

                            <p ng-show="submitted && boardForm.board_title.$error.required">
                                Please enter a board name
                            </p>
                        </ion-item>
                    </ion-list>
                </div>
            </ion-content>
            <ion-footer-bar>
                <button class="button button-block control-button bottomOfPage"
                        ng-click="submitted = true">
                    CREATE
                </button>
            </ion-footer-bar>
        </form>
    </ion-view>

指示

    .directive('fileModel', ['$parse', function ($parse) {
            return {
                restrict: 'A',
                link: function (scope, element, attrs) {
                    var model = $parse(attrs.fileModel);
                    var modelSetter = model.assign;

                    element.bind('change', function () {
                        scope.$apply(function () {
                            modelSetter(scope, element[0].files[0]);
                        });
                    });
                }
            };
        }])

调节器

    .controller('ManageBoardCtrl', function ($scope, $http, $ionicPopup, $state, BoardService) {
            $scope.submitted = false;
            $scope.data = {};
            $scope.addBoard = function(formData) {
                BoardService.CreateBoard(formData).then(function(response) {
                    if (response === "success") {
                        $ionicPopup.alert({
                            title: "Success",
                            template: "Board created successfully"
                        });
                    }
                }, function (response) {
                    $ionicPopup.alert({
                        title: "Failed",
                        template: "Somethings wrong, Can not create boards at now."
                    });
                });
            }
        })

服务

    .service('BoardService', function ($q, $http) {
            var getUrl = API_URL + "boards";

            var createBoard = function (fData) {
                var formData = new FormData();
                formData.append("board_title", fData.board_title);
                formData.append("board_background", fData.board_background);

                return $q(function (resolve, reject) {
                    $http({
                        transformRequest: angular.identity,
                        method: 'POST',
                        url: getUrl,
                        headers: { 'Content-Type': undefined },
                        data: formData
                    }).success(function (response) {
                        if (response.success === true) {
                            resolve('success');
                        } else {
                            reject('fail');
                        }
                    }).error(function () {
                        reject('requesterror');
                    });
                });
            };

            return {
                CreateBoard: createBoard
            };
        })

部署Android/iPhone文件选择后,将根据操作系统处理浏览图像.