原文技術交流：http://www.ncloud.hk/%E6%8A%80%E6%9C%AF%E5%88%86%E4%BA%AB/angularjs-ng-file-upload/
在做網站的過程中難免會遇到上傳圖片或者上傳文件的功能，使用AngularJ實現的話可以用angularJs的ng-file-upload這個庫。
支持上傳文件(目前爲止我用過的是Excel上傳，與上傳圖片的方法一樣)
支持單張圖片上傳
支持多張圖片上傳
支持拖拽圖片上傳
1.Install安裝引用
手冊：可以從這裏下載最新的js庫
Bower安裝：
bower install ng-file-upload-shim --save(for non html5 suppport)
bower install ng-file-upload --saveNuGet：PM> Install-Package angular-file-upload
NPM：npm install ng-file-upload
<script src="angular(.min).js"></script> <script src="ng-file-upload-shim(.min).js"></script> <!-- for no html5 browsers support --> <script src="ng-file-upload(.min).js"></script>
2.Usage用法
(1)Single p_w_picpath upload
p_w_picpath-upload.html://顯示選擇的圖片<img ngf-src="data.file || data.defaultImage" class="img-responsive" style="width:200px; height: 200px; max-width:500px;"/>
<div class="button" ngf-select="" ngf-pattern="'p_w_picpath/*'" ngf-multiple="false" ng-model="data.file">選擇文件</div>
<button ng-click="upload()">upload</button>
p_w_picpath-upload-ctrl.js:
$scope.data = {
file: null};
$scope.upload = function () { if (!$scope.data.file) { return;
} var url = $scope.params.url; //params是model傳的參數，圖片上傳接口的url
var data = angular.copy($scope.params.data || {}); // 接口需要的額外參數，比如指定所上傳的圖片屬於哪個用戶: { UserId: 78 }
data.file = $scope.data.file;
Upload.upload({
url: url,
data: data
}).success(function (data) {
$scope.hide(data);
}).error(function () {
logger.log('error');
});
};
(2)Multiple p_w_picpaths upload
<div class="button" ngf-select ngf-pattern="'p_w_picpath/*'" ng-model="files" ngf-multiple="true">選擇多張圖片</div>
//ngf-multiple控制是否可以上傳多張圖片
// for multiple files:
$scope.upload = function (files) { if (files && files.length) { for (var i = 0; i < files.length; i++) {
Upload.upload({..., data: {file: files[i]}, ...})...;
} // or send them all together for HTML5 browsers: Upload.upload({..., data: {file: files}, ...})...;
}
}
(3)Drop Single p_w_picpath
p_w_picpath-upload.html:<button class="btn btn-default" ngf-select="" ngf-pattern="'p_w_picpath/*'" ng-model="data.file"
ngf-multiple="false">
選擇圖片</button>
<span>(支持拖拽單張圖片上傳)</span>
<div ngf-drop ngf-pattern="'p_w_picpath/*'" ng-model="data.file" class="cropArea">
<img-crop p_w_picpath="data.file|| data.defaultImage" resule-p_w_picpath="data.file"></img-crop>
<div class="col col-sm-4 text-left">
<img ngf-src="data.file|| data.defaultImage"
style="width:200px; height: 200px; max-width:500px;"/>
</div>
</div>
<button class="btn btn-primary" ng-click="upload()">開始上傳</button>
style.css:
.cropArea {
background: #E4E4E4;
min-height: 230px;
height: auto;
margin: 15px;
margin-right: 0;
}
(4)Drop and Select Multiple p_w_picpaths upload
p_w_picpath-upload.html:<button class="btn btn-default" ngf-select="selectImage($files)" ngf-pattern="'p_w_picpath/*'"
ngf-multiple="true">
選擇圖片</button>
<span>(支持多張圖片拖拽上傳)</span>
<div class="row cropArea" style="padding: 0 15px 15px 0" ngf-drop ngf-pattern="'p_w_picpath/*'" ng-model="files"
ngf-multiple="true">
<img-crop p_w_picpath="files || data.defaultImage" resule-p_w_picpath="files"></img-crop>
<div ngf-no-file-drop>該瀏覽器不支持拖拽上傳。</div>
<div class="col col-xs-4 text-left" style="margin-top: 15px;" ng-repeat="p_w_picpath in mulImages">
<div ng-repeat="oneImage in p_w_picpath">
<img ngf-src="oneImage || data.defaultImage" class="img-responsive"
style="width:200px; height: 200px; max-width:500px;"/>
</div>
</div>
</div>//<img-crop></img-crop>定義了圖片可以拖拽的位置//<img/>排列顯示上傳的多張圖片 style.css:
.cropArea {
background: #E4E4E4;
min-height: 230px;
height: auto;
margin: 15px;
margin-right: 0;
}
p_w_picpath-upload-ctrl.js:
$scope.data = {
file: null,
defaultImage: commonSvc.defaultImage
};
$scope.mulImages = [];
$scope.$watch('files', function () {
$scope.selectImage($scope.files);
});//根據選擇的圖片來判斷 是否爲一下子選擇了多張//一下子選擇多張的數據格式爲一個數組中有多個對象，而一次只選擇一張的數據格式爲一個數組中有一個對象$scope.selectImage = function (files) { if (!files || !files.length) { return;
} if (files.length > 1) {
angular.forEach(files, function (item) { var p_w_picpath = [];
p_w_picpath.push(item);
$scope.mulImages.push(p_w_picpath);
})
} else {
$scope.mulImages.push(files);
}
};
$scope.upload = function () { if (!$scope.mulImages.length) { return;
} var url = $scope.params.url; var data = angular.copy($scope.params.data || {});
data.file = $scope.mulImages;
Upload.upload({
url: url,
data: data
}).success(function (data) {
$scope.hide(data);
$rootScope.alert('success');
}).error(function () {
$rootScope.alert(‘error’);
});
};
以上內容是我做項目中需要的一些功能，也許不是該庫全面的功能，若有其他需求可以查看GitHub官方文檔：https://github.com/danialfarid/ng-file-upload