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在Angular中處理文件上傳和下載的功能可以通過使用HTTP請求來實(shí)現(xiàn)。以下是一個(gè)簡單的示例:
文件上傳:
文件下載:
示例代碼:
文件上傳:
import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-file-upload',
templateUrl: './file-upload.component.html'
})
export class FileUploadComponent {
constructor(private http: HttpClient) {}
onFileChange(event) {
const file = event.target.files[0];
const formData = new FormData();
formData.append('file', file);
this.http.post('http://localhost:3000/upload', formData)
.subscribe(response => {
console.log('File uploaded successfully');
});
}
}
文件下載:
import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
@Component({
selector: 'app-file-download',
templateUrl: './file-download.component.html'
})
export class FileDownloadComponent {
constructor(private http: HttpClient) {}
downloadFile() {
this.http.get('http://localhost:3000/download', { responseType: 'blob' })
.subscribe(response => {
const blob = new Blob([response], { type: 'application/pdf' });
const url = window.URL.createObjectURL(blob);
window.open(url);
});
}
}
注意:在實(shí)際應(yīng)用中,需要根據(jù)具體的需求和服務(wù)器端的實(shí)現(xiàn)方式來對文件上傳和下載功能進(jìn)行進(jìn)一步的優(yōu)化和處理。
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