Question

请帮助我或建议我

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如果可能的话，有什么可能使用formcontrolName上载表单的图像的方法？

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我正在尝试上传包含其他信息的图像文件，例如firstname，lastname和file，这很正常：

/* File Upload request  to Upload file  */
this.currentFileUpload = this.selectedFiles.item(0);
let formdata: FormData = new FormData();
formdata.append('firstName', "Harkesh");
formdata.append('lastName', "kumar");
formdata.append('file', this.currentFileUpload);

但是我的问题是我正在发送带有一些字符串和FORM的{{1}}文件，但是Object不接受FormData：

Object

我正在尝试的第二个选项：

let formdata: FormData = new FormData();
formdata.append('functionId', this.functionId);
formdata.append('processId', this.processId);
formdata.append('file', this.currentFileUpload);
formdata.append('formDetails', userobjArr);

let formdata: FormData = new FormData(); formdata.append('file', this.currentFileUpload); userDetails.name = ""; userobjWrapper["functionId"] = this.functionId; userobjWrapper["processId"] = this.processId; userobjWrapper["taskId"] = this.taskId; userobjWrapper["file"] = this.currentFileUpload; userobjWrapper["formDetails"] = userobjArr;是我分配给userobjArr的{{1}}数组，它得到Object的值。

我不确定如何在一次其余的Service API调用中读取图像？

Answer 1

尝试这个：）

onBmpFileUploadChange(event) {
    const self = this;
    const target = event.target || event.srcElement;
    const files = target.files;
    let arrPath = files[0].name;
    arrPath = arrPath.split('.');
    if ((arrPath[1] === 'bmp') || (arrPath[1] === 'BMP')) {
      const xhttp = new XMLHttpRequest();
      const formData = new FormData();
      console.log('uploadBitmap');
      formData.append('bitmapFile', files[0]);
      xhttp.onreadystatechange = function () {
        event.target.value = null;
        if (this.readyState === 4) {
          if (this.status === 201) {
            console.log('bmpUploadedSuccessfully');
          } else {
            console.log('bmpUploadFailed')));
          }
        }
      };
      xhttp.open('post', '/formatgraphics', true);
      xhttp.setRequestHeader('Pragma', 'no-cache');
      xhttp.send(formData);
    } else {
      console.log('uploadFailedInvalidFile')));
    }
  }
}

文件上传或图像上传角度

1 个答案: