您可以通过以下步骤解决Abp Angular中的文件上传和上传进度问题：

1. 在Angular项目中安装@abp/ng.file包：

npm install @abp/ng.file

2. 创建一个用于上传文件的服务，例如FileUploadService：

import { Injectable } from '@angular/core';
import { FileUploadServiceProxy, UploadFileDto } from '@abp/ng.file';

@Injectable({
  providedIn: 'root'
})
export class FileUploadService {
  constructor(private fileUploadServiceProxy: FileUploadServiceProxy) {}

  uploadFile(file: File): void {
    const uploadFileDto = new UploadFileDto();
    uploadFileDto.file = file;

    this.fileUploadServiceProxy.upload(uploadFileDto).subscribe((response) => {
      console.log('File uploaded successfully:', response);
    });
  }
}

3. 在需要上传文件的组件中使用FileUploadService：

import { Component } from '@angular/core';
import { FileUploadService } from './file-upload.service';

@Component({
  selector: 'app-file-upload',
  template: `
    
    Upload
    
Upload Progress: {{ uploadProgress }}%
  `
})
export class FileUploadComponent {
  uploadProgress: number;
  selectedFile: File;

  constructor(private fileUploadService: FileUploadService) {}

  onFileSelected(files: FileList): void {
    this.selectedFile = files.item(0);
  }

  onUpload(): void {
    this.fileUploadService.uploadFile(this.selectedFile);
  }
}

4. 如果您想要获取上传进度，您可以使用HttpClient，并监听上传进度事件：

import { Injectable } from '@angular/core';
import { HttpClient, HttpEvent, HttpEventType } from '@angular/common/http';
import { Observable } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class FileUploadService {
  constructor(private http: HttpClient) {}

  uploadFile(file: File): Observable> {
    const formData = new FormData();
    formData.append('file', file);

    return this.http.post('api/Upload/UploadFile', formData, {
      reportProgress: true,
      observe: 'events'
    });
  }
}

5. 在组件中订阅上传进度事件：

import { Component } from '@angular/core';
import { FileUploadService } from './file-upload.service';

@Component({
  selector: 'app-file-upload',
  template: `
    
    Upload
    
Upload Progress: {{ uploadProgress }}%
  `
})
export class FileUploadComponent {
  uploadProgress: number;
  selectedFile: File;

  constructor(private fileUploadService: FileUploadService) {}

  onFileSelected(files: FileList): void {
    this.selectedFile = files.item(0);
  }

  onUpload(): void {
    this.fileUploadService.uploadFile(this.selectedFile).subscribe((event) => {
      if (event.type === HttpEventType.UploadProgress) {
        this.uploadProgress = Math.round((event.loaded / event.total) * 100);
      } else if (event.type === HttpEventType.Response) {
        console.log('File uploaded successfully:', event.body);
      }
    });
  }
}

请注意，这只是一个基本示例，您需要根据您的实际需求进行修改。具体的上传接口和路径可能会因您的后端实现而有所不同。