我正在使用ngx-image-cropper 在我的角度应用程序中裁剪图像。我使用Output属性返回“ File”(即(imageCroppedFile)),以便能够抓取裁剪的图像。我需要裁剪后的图像具有文件名,以便我可以使用name属性遍历后端的文件,而默认情况下它是未定义的。我该如何命名? 我尝试了以下操作:在FormData上,
var formData:any = new FormData();
console.log('The number of files is '+files.length);//Logs the number of files is 1
for(var i=0; i<files.length;i++) {
formData.append("uploads[]", files[i].name, 'image'+i);
console.log('File name '+ i + ' ' +files[i].name);//Logs File name 0 undefined
}
以及裁剪触发的方法
imageCroppedFile(image: File) {
this.filesToUpload = [];
console.log('imageCroppedFile method '+image.name+ ' size is '+image.size);// Logs imageCroppedFile method undefined size is 380284
this.filesToUpload[0]=image;
console.log('The filesToUpload is '+this.filesToUpload[0].name);// Logs The filesToUpload is undefined
}
上传器无需裁剪即可工作。
答案 0 :(得分:1)
将文件投射到Blob中,您可以自己命名Blob
const blobImage = file as Blob;
参考:https://github.com/Mawi137/ngx-image-cropper/issues/91#issuecomment-422252629
答案 1 :(得分:0)
这对我有用:
// grab the cropped area to file for upload
var b64File = this.dataURLtoFile(this.croppedImage, 'hello.jpg'); // you can name it anything.
dataURLtoFile(dataurl, filename): File {
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while(n--){
u8arr[n] = bstr.charCodeAt(n);
}
return new File([u8arr], filename, {type:mime});
}