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要使用Angular的HttpClient進(jìn)行文件上傳,可以按照以下步驟進(jìn)行:
import { HttpClientModule } from '@angular/common/http';
@NgModule({
imports: [
HttpClientModule
]
})
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
@Injectable({
providedIn: 'root'
})
export class FileUploadService {
constructor(private http: HttpClient) { }
uploadFile(file: File) {
const formData = new FormData();
formData.append('file', file);
return this.http.post('http://example.com/upload', formData);
}
}
import { Component } from '@angular/core';
import { FileUploadService } from './file-upload.service';
@Component({
selector: 'app-file-upload',
templateUrl: './file-upload.component.html',
styleUrls: ['./file-upload.component.css']
})
export class FileUploadComponent {
constructor(private fileUploadService: FileUploadService) { }
onFileChange(event) {
const file = event.target.files[0];
this.fileUploadService.uploadFile(file).subscribe(
response => {
console.log('File uploaded successfully');
},
error => {
console.error('Error uploading file');
}
);
}
}
<input type="file" (change)="onFileChange($event)">
通過以上步驟,你就可以使用Angular的HttpClient進(jìn)行文件上傳操作了。當(dāng)用戶選擇要上傳的文件時(shí),會(huì)觸發(fā)onFileChange方法,調(diào)用文件上傳服務(wù)來實(shí)現(xiàn)文件上傳。
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