标签：angularjs
原文技术交流：http://www.ncloud.hk/%E6%8A%80%E6%9C%AF%E5%88%86%E4%BA%AB/angularjs-ng-file-upload/
在做网站的过程中难免会遇到上传图片或者上传文件的功能，使用AngularJ实现的话可以用angularJs的ng-file-upload这个库。
支持上传文件(目前为止我用过的是Excel上传，与上传图片的方法一样)
支持单张图片上传
支持多张图片上传
支持拖拽图片上传
手册：可以从这里下载最新的js库
Bower安装：bower install ng-file-upload-shim --save(for non html5 suppport)
bower install ng-file-upload --save
NuGet：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>
(1)Single image upload
image-upload.html://显示选择的图片<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="‘image/*‘" ngf-multiple="false" ng-model="data.file">选择文件</div>
<button ng-click="upload()">upload</button>
image-upload-ctrl.js:
$scope.data = {
file: null};
$scope.upload = function () { if (!$scope.data.file) { return;
} var url = $scope.params.url; //params是model传的参数，图片上传接口的url
var data = angular.copy($scope.params.data || {}); // 接口需要的额外参数，比如指定所上传的图片属于哪个用户: { 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 images upload
<div class="button" ngf-select ngf-pattern="‘image/*‘" ng-model="files" ngf-multiple="true">选择多张图片</div>
//ngf-multiple控制是否可以上传多张图片
// for multiple files:
$scope.upload = function (files) { if (files && files.length) { for (var i = 0; i < files.length; i++) {
Upload.upload({..., data: {file: files[i]}, ...})...;
} // or send them all together for HTML5 browsers: Upload.upload({..., data: {file: files}, ...})...;
}
}
(3)Drop Single image
image-upload.html:<button class="btn btn-default" ngf-select="" ngf-pattern="‘image/*‘" ng-model="data.file"
ngf-multiple="false">
选择图片</button>
<span>(支持拖拽单张图片上传)</span>
<div ngf-drop ngf-pattern="‘image/*‘" ng-model="data.file" class="cropArea">
<img-crop image="data.file|| data.defaultImage" resule-image="data.file"></img-crop>
<div class="col col-sm-4 text-left">
<img ngf-src="data.file|| data.defaultImage"
style="width:200px; height: 200px; max-width:500px;"/>
</div>
</div>
<button class="btn btn-primary" ng-click="upload()">开始上传</button>
style.css:
.cropArea {
background: #E4E4E4;
min-height: 230px;
height: auto;
margin: 15px;
margin-right: 0;
}
(4)Drop and Select Multiple images upload
image-upload.html:<button class="btn btn-default" ngf-select="selectImage($files)" ngf-pattern="‘image/*‘"
ngf-multiple="true">
选择图片</button>
<span>(支持多张图片拖拽上传)</span>
<div class="row cropArea" style="padding: 0 15px 15px 0" ngf-drop ngf-pattern="‘image/*‘" ng-model="files"
ngf-multiple="true">
<img-crop image="files || data.defaultImage" resule-image="files"></img-crop>
<div ngf-no-file-drop>该浏览器不支持拖拽上传。</div>
<div class="col col-xs-4 text-left" style="margin-top: 15px;" ng-repeat="image in mulImages">
<div ng-repeat="oneImage in image">
<img ngf-src="oneImage || data.defaultImage" class="img-responsive"
style="width:200px; height: 200px; max-width:500px;"/>
</div>
</div>
</div>//<img-crop></img-crop>定义了图片可以拖拽的位置//<img/>排列显示上传的多张图片 style.css:
.cropArea {
background: #E4E4E4;
min-height: 230px;
height: auto;
margin: 15px;
margin-right: 0;
}
image-upload-ctrl.js:
$scope.data = {
file: null,
defaultImage: commonSvc.defaultImage
};
$scope.mulImages = [];
$scope.$watch(‘files‘, function () {
$scope.selectImage($scope.files);
});//根据选择的图片来判断 是否为一下子选择了多张//一下子选择多张的数据格式为一个数组中有多个对象，而一次只选择一张的数据格式为一个数组中有一个对象$scope.selectImage = function (files) { if (!files || !files.length) { return;
} if (files.length > 1) {
angular.forEach(files, function (item) { var image = [];
image.push(item);
$scope.mulImages.push(image);
})
} 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’);
});
};
以上内容是我做项目中需要的一些功能，也许不是该库全面的功能，若有其他需求可以查看GitHub官方文档：https://github.com/danialfarid/ng-file-upload
本文出自 “11140155” 博客，请务必保留此出处http://11150155.blog.51cto.com/11140155/1759062
angularJs中上传图片/文件功能：ng-file-upload
标签：angularjs
原文地址：http://11150155.blog.51cto.com/11140155/1759062
