【angular5项目积累总结】文件上传

<div class="form-group row">
          <label class="col-sm-2 col-form-label">会议Logo</label>
          <div class="col-sm-10">
            <dx-file-uploader selectButtonText="选择图片"
                              name="file"
                              [multiple]="false"
                              labelText=""
                              [uploadUrl]="uploadImgUrl"
                              uploadMode = "instantly"
                              (onUploaded)="onUploadSuccess($event,0)"
                              accept="image/*">
            </dx-file-uploader>  
          </div>
        </div>

  onUploadSuccess(event: any, type:any) {
    console.log(event);
    if (event.request.readyState == 4 && event.request.status == 200 && event.request.response) {
      let responseObj = JSON.parse(event.request.response);
      let _url = responseObj['url'];
      let _blockblobName = responseObj['blockblobName'];
      if (!!_url && type == 0) {
        this.meetingObj['Logo'] = _url;
      }
      if (_url && _blockblobName && type >= 0) {
        let _mark = 0;
        this.uploadFileArray.map((item, index) => {
          if (item.type == type) {
            _mark = 1;
            this.uploadFileArray[index]['url'] = _url;
            this.uploadFileArray[index]['fileName'] = _blockblobName;
          } 
        });
        !_mark && this.uploadFileArray.push({ type: type, url: _url, fileName: _blockblobName});
      }
    }

组件地址：https://js.devexpress.com/Demos/WidgetsGallery/Demo/FileUploader/FileUploading/Angular/Light/