Angular HttpClient upload file with FormData
2017-11-08 10:15
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从sof上找到一个example:https://stackoverflow.com/questions/46206643/asp-net-core-2-0-and-angular-4-3-file-upload-with-progress,不但上传文件,而且支持多文件:
模板代码:
组件代码:
单文件上传,改改就行。
另外那个FormData接口的使用需要IE9兼容填充库:https://angular.cn/guide/browser-support#建议的填充库
模板代码:
<input #file type="file" multiple (change)="upload(file.files)" /> <span *ngIf="uploadProgress > 0 && uploadProgress < 100"> {{uploadProgress}}% </span>
组件代码:
import { Component } from '@angular/core'; import { HttpClient, HttpRequest, HttpEventType, HttpResponse } from '@angular/common/http' @Component({ selector: 'files', templateUrl: './files.component.html', }) export class FilesComponent { public uploadProgress: number; constructor(private http: HttpClient) { } upload(files) { if (files.length === 0) return; const formData = new FormData(); for (let file of files) formData.append(file.name, file); const req = new HttpRequest('POST', `api/files`, formData, { reportProgress: true, }); this.http.request(req).subscribe(event => { if (event.type === HttpEventType.UploadProgress) this.uploadProgress = Math.round(100 * event.loaded / event.total); else if (event instanceof HttpResponse) console.log('Files uploaded!'); }); } }
单文件上传,改改就行。
另外那个FormData接口的使用需要IE9兼容填充库:https://angular.cn/guide/browser-support#建议的填充库
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