ng-file-upload
时间: 2024-01-17 16:04:33 浏览: 82
ng-file-upload is an AngularJS module that provides file upload functionality. It allows users to upload files from their local system to a web server. The module provides a directive that can be used to attach a file picker to any input element, and also supports multiple file uploads. It also supports drag and drop functionality for file uploads. Additionally, it provides a progress bar to show the upload progress and supports various file formats. The ng-file-upload module can be easily integrated with AngularJS applications and can be customized as per the requirements.
相关问题
NG-ZORRO上传UPload组件接口调用
NG-ZORRO 的 Upload 组件提供了多种方式来调用接口,以下是其中两种常见的方式:
1. 通过 nzBeforeUpload 属性设置上传前的回调函数,在回调函数中通过 HttpClient 发送请求,示例如下:
```
<nz-upload
nzAction="https://www.mocky.io/v2/5cc8019d300000980a055e76"
[nzBeforeUpload]="beforeUpload">
<button nz-button>
<i nz-icon nzType="upload"></i><span>Upload</span>
</button>
</nz-upload>
beforeUpload = (file: File) => {
const formData = new FormData();
formData.append('file', file);
this.http.post('your-upload-api-url', formData).subscribe(res => {
console.log(res);
});
return false;
};
```
2. 通过 nzCustomRequest 属性设置自定义的上传方法,示例如下:
```
<nz-upload
nzAction="https://www.mocky.io/v2/5cc8019d300000980a055e76"
[nzCustomRequest]="customUpload">
<button nz-button>
<i nz-icon nzType="upload"></i><span>Upload</span>
</button>
</nz-upload>
customUpload = (item: UploadXHRArgs) => {
const formData = new FormData();
formData.append('file', item.file as any);
const req = new HttpRequest('POST', 'your-upload-api-url', formData, {
reportProgress: true
});
return this.http.request(req).subscribe((event: HttpEvent<any>) => {
if (event.type === HttpEventType.UploadProgress) {
if (event.total > 0) {
// 计算上传进度
const percent = (event.loaded / event.total) * 100;
item.onProgress(percent, event);
}
} else if (event instanceof HttpResponse) {
// 上传成功
item.onSuccess(event.body, event);
}
}, error => {
// 上传失败
item.onError(error.statusText, item.file);
});
};
```
需要注意的是,以上示例中的 `your-upload-api-url` 需要替换成实际的上传接口地址。同时,还需要根据实际情况对上传的请求参数进行调整。
ng-img-crop插件怎么发送图片,php怎么接收,
ng-img-crop插件可以在前端进行图片裁剪,然后将裁剪后的图片以Base64编码的形式发送到后端服务器。在后端PHP中,可以使用$_POST或$_FILES数组来接收这个Base64编码的图片数据。
具体来说,可以在前端使用以下代码将裁剪后的图片以Base64编码的形式发送到后端:
```javascript
// 获取裁剪后的图片数据
var croppedImage = $scope.croppedImage;
// 将图片数据转换为Blob对象
var blob = dataURItoBlob(croppedImage);
// 创建FormData对象
var formData = new FormData();
formData.append('image', blob);
// 发送POST请求
$http.post('upload.php', formData, {
headers: {'Content-Type': undefined},
transformRequest: angular.identity
}).success(function(data){
console.log(data);
});
// 将Data URI格式的图片数据转换为Blob对象
function dataURItoBlob(dataURI) {
var byteString = atob(dataURI.split(',')[1]);
var ab = new ArrayBuffer(byteString.length);
var ia = new Uint8Array(ab);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([ab], {type: 'image/jpeg'});
}
```
在后端PHP中,可以使用以下代码来接收这个Base64编码的图片数据:
```php
<?php
// 获取Base64编码的图片数据
$imageData = $_POST['image'];
// 将Base64编码的字符串转换为图片文件
$image = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $imageData));
// 保存图片文件
file_put_contents('image.jpg', $image);
?>
```
这样,就可以将通过ng-img-crop插件裁剪后的图片发送到后端PHP服务器,并保存为文件。