vet的中文怎么写Angular4 后台管理系统搭建（10） - 做一个通用的可跨域上传文件的组件

 1 import { Component, OnInit, Input, Inject, ViewChild, TemplateRef, ElementRef, Output, EventEmitter } from '@angular/core';
 2 import { BsModalService } from 'ngx-bootstrap/modal';
 3 import { BsModalRef } from 'ngx-bootstrap/modal/modal-options.class';
 4 
 5 import { FileUploader, FileUploaderOptions } from 'ng2-file-upload';
 6 import ConstantsList from '../../common/constants/config';
 7 import { BackCode } from '../../module/common/common';
 8 import { UserNews } from '../../module/business/login';
 9 
10 @Component({
11   selector: 'app-uploadfile',
12   templateUrl: './uploadfile.component.html',
13   styleUrls: ['./uploadfile.component.css']
14 })
15 export class UploadfileComponent implements OnInit {
16 
17   @ViewChild('templateUploadFile') public template: TemplateRef<any>;
18   modalRef: BsModalRef;
19   ModalConfig = { animated: false, keyboard: false, backdrop: true, ignoreBackdropClick: true, };
20   @Input() public userNews: UserNews;
21   @Output() weburl: EventEmitter<string> = new EventEmitter<string>();
22   isError:boolean = false;
23   stringError:string;
24 
25   constructor(private modalService: BsModalService, @Inject('public_service') private publicservice: any) { }
26 
27   ngOnInit() { }
28 
29   openModal(template: TemplateRef<any>) {
30     this.modalRef = this.modalService.show(template, Object.assign({}, this.ModalConfig, { class: 'modal-sm' }));
31   }
32 
33   closeModal() {
34     this.modalRef.hide();
35     this.modalRef = null;
36     this.stringError = '';
37     this.isError = false;
38   }
39 
40   public show() {
41     this.openModal(this.template);
42     this.stringError = '';
43     this.isError = false;
44   }
45 
46   onSelectChange(event: EventTarget) );
62     } 
63     else
67   }
68 
69   checkIsImage(filename: string): boolean  else {
74       return false;
75     }
76   }
77 
78 }