Angular上传组件

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angular-file-upload 是一个基于HTML5技术的文件上传轻量级 AngularJS指令（directive），当浏览器不支持时转为采用 FileAPI polyfill技术实现(基于Flash).

Directives（指令）

nv-file-drop

<!-- 最少配置 -->
<elementnv-file-dropuploader="{FileUploader}"></element>
<!-- 最多配置 -->
<elementnv-file-dropuploader="{FileUploader}"options="{Object}"filters="{String}"></element>

• 属性 uploader 必须是 FileUploader的一个实例。

• 属性 options 可能是 {FileItem} 的设置或者自定义设置。

• 属性 filters 可能是用,隔开的过滤器名称，比如： 'filterName1, filterName2'，这些过滤器必须如下预定义：

uploader.filters.push({name:'filterName1', fn:function() {/* your code here */}});
uploader.filters.push({name:'filterName2', fn:function() {/* your code here */}});

nv-file-select

<!-- 最少配置 -->
<inputtype="file"nv-file-selectuploader="{FileUploader}"/>
<!-- 最多配置 -->
<inputtype="file"nv-file-selectuploader="{FileUploader}"options="{Object}"filters="{String}"/>

nv-file-over

<!-- 最少配置 -->
<elementnv-file-overuploader="{FileUploader}"></element>
<!-- 最多配置 -->
<elementnv-file-overuploader="{FileUploader}"over-class="{String}"></element>

Service（服务）

FileUploader
FileUploader

属性

• url {String}: 上传文件的服务器路径

• alias {String}:  包含文件的名称，默认是file

• queue {Array}: 上传队列

• progress {Number}: 上传队列的进度，只读

• headers {Object}: 上传的头文件信息， 浏览器需支持HTML5

• formData {Array}: 与文件一起发送的表单数据

• filters {Array}: 在文件加入上传队列之前应用过滤器.，如果过滤器返回true则文件加入队列中

• autoUpload {Boolean}: 文件加入队列之后自动上传，默认是false

• method {String}: 请求方式，默认是POST，浏览器需支持HTML5

• removeAfterUpload {Boolean}: 文件上传成功之后从队列移除，默认是false

• isHTML5 {Boolean}: 如果浏览器支持HTML5上传则返回true，只读

• isUploading {Boolean}: 文件正在上传中返回true，只读

• queueLimit {Number} : 最大上传文件数量（预定义）

• withCredentials {Boolean} : 使用CORS，默认是false， 浏览器需支持HTML5

方法

• addToQueue function(files[, options[, filters]]) {: Add items to the queue, where files is a {FileList|File|HTMLInputElement}, options is an {Object} andfilters is a {String}.  添加项到上传队列中，files 是 {FileList|File|HTMLInputElement}， options 是 {Object} 以及 filters 是 {String}

• removeFromQueue function(value) {: Remove an item from the queue, wherevalue is {FileItem} or index of item.  从上传队列移除项，value 可以是 {FileItem} 或者项的序号

• clearQueue function() {: Removes all elements from the queue.  移除上传队列所有的元素

• uploadItem function(value) {: Uploads an item, where value is {FileItem} or index of item.  上传项， value 可以是 {FileItem} 或者项的序号

• cancelItem function(value) {: Cancels uploading of item, where value is{FileItem} or index of item.  取消上传的项

• uploadAll function() {: Upload all pending items on the queue.  将上传队列中所有的项进行上传

• cancelAll function() {: Cancels all current uploads.  取消所有当前上传

• destroy function() {: Destroys a uploader. 

• isFile function(value) {return {Boolean};}: Returns true if value is {File}. 

• isFileLikeObject function(value) {return {Boolean};}: Returns true if value is{FileLikeObject}.

• getIndexOfItem function({FileItem}) {return {Number};}: Returns the index of the{FileItem} queue element.  返回项在上传队列中的序号

• getReadyItems function() {return {Array.<FileItems>};}: Return items are ready to upload.  返回准备上传的项

• getNotUploadedItems function() {return {Array.<FileItems>};}: Return an array of all pending items on the queue  返回上传队列中未上传的项

回调函数

• onAfterAddingFile function(item) {: 添加文件到上传队列后

• onWhenAddingFileFailed function(item, filter, options) {: 添加文件到上传队列失败后

• onAfterAddingAll function(addedItems) {: 添加所选的所有文件到上传队列后

• onBeforeUploadItem function(item) {: 文件上传之前

• onProgressItem function(item, progress) {: 文件上传中

• onSuccessItem function(item, response, status, headers) {: 文件上传成功后

• onErrorItem function(item, response, status, headers) {: 文件上传失败后

• onCancelItem function(item, response, status, headers) { - 文件上传取消后

• onCompleteItem function(item, response, status, headers) {: 文件上传完成后

• onProgressAll function(progress) {: 上传队列的所有文件上传中

• onCompleteAll function() {: 上传队列的所有文件上传完成后

成功上传文件的回调函数顺序是：onAfterAddingFile ? onAfterAddingAll ? onBeforeUploadItem ? onProgressItem ? onProgressAll ? onSuccessItem ? onCompleteItem ? onCompleteAll

FileItem

属性

• url {String}: Path on the server in which this file will be uploaded  上传文件的服务器路径

• alias {String}: Name of the field which will contain the file, default is file  包含文件的名称，默认是file

• headers {Object}: Headers to be sent along with this file. HTML5 browsers only.  上传的头文件信息， 浏览器需支持HTML5

• formData {Array}: Data to be sent along with this file  与文件一起发送的表单数据

• method {String}: It's a request method. By default POST. HTML5 browsers only.  请求方式，默认是POST，浏览器需支持HTML5

• withCredentials {Boolean} : enable CORS. HTML5 browsers only.  使用CORS，默认是false， 浏览器需支持HTML5

• removeAfterUpload {Boolean}: Remove this file from the queue after uploading  上传之后从上传队列移除该文件

• index {Number} - A sequence number upload. Read only.  上传文件在上传队列中的序号，只读

• progress {Number}: File upload progress percentage. Read only.  文件上传的进度，只读

• isReady {Boolean} - File is ready to upload. Read only.  文件是否准备好上传，只读

• isUploading {Boolean}: true if the file is being uploaded. Read only.  文件是否正在上传中，只读

• isUploaded {Boolean}: true if the file was uploaded. Read only.  文件是否已经上传，只读

• isSuccess {Boolean}: true if the file was uploaded successfully. Read only.  文件是否已经上传成功，只读

• isCancel {Boolean} : true if uploading was canceled. Read only.  文件是否取消上传，只读

• isError {Boolean} - true if occurred error while file uploading. Read only.  文件是否上传错误，只读

• uploader {Object}: Reference to the parent Uploader object for this file. Read only.  上传该文件的Uploader ，只读

方法

• remove function() {: Remove this file from the queue  从上传队列移除该文件

• upload function() {: Upload this file  上传该文件

• cancel function() {: Cancels uploading of this file  取消上传该文件

回调函数

• onBeforeUpload function() {: Fires before uploading an item.  上传该文件之前

• onProgress function(progress) {: On file upload progress.  上传该文件的过程

• onSuccess function(response, status, headers) {: On file successfully uploaded  成功上传该文件后

• onError function(response, status, headers) {: On upload error  上传该文件出错后

• onCancel function(response, status, headers) { - On cancel uploading  取消上传该文件后

• onComplete function(response, status, headers) {: On file upload complete (independently of the sucess of the operation)  完成上传该文件后

Filters（过滤器）

注册过滤器：

var uploader =newFileUploader({
    filters: [{
        name:'yourName1',
        // A user-defined filterfn:function(item) {
            returntrue;
        }
    }]
});
// 另一种
uploader.filters.push({
    name:'yourName2',
    fn:function(item) {
        returntrue;
    }
});

预定义的过滤器：

folder
queueLimit

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