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上传者在一个请求中包含多个文件，因此在使用 clearQueue() 获得响应后自定义文件上传不起作用，仅删除单个文件

core.js:3926 错误类型错误：无法读取 FileUploaderCustom.push../node_modules/ng2-file-upload/file-upload/file-uploader.class.js.FileUploader.cancelItem 处未定义的属性“中止”（file-uploader .class.js:112) 在 FileItem.push../node_modules/ng2-file-upload/file-upload/file-item.class.js.FileItem.cancel (file-item.class.js:38) 在 FileUploaderCustom .push../node_modules/ng2-file-upload/file-upload/file-uploader.class.js.FileUploader.removeFromQueue (file-uploader.class.js:85) 在 FileItem.push../node_modules/ng2- File-upload/file-upload/file-item.class.js.FileItem.remove (file-item.class.js:41) 在 FileUploaderCustom.push../node_modules/ng2-file-upload/file-upload/file -uploader.class.js.FileUploader.clearQueue (file-uploader.class.js:92) 在 FileUploaderCustom.uploaderOnward。onSuccessItem (mandate-initial.component.ts:267) 在 FileUploaderCustom.push../node_modules/ng2-file-upload/file-upload/file-uploader.class.js.FileUploader._onSuccessItem (file-uploader.class.js :396) 在 XMLHttpRequest.xhr.onload [as __zone_symbol__ON_PROPERTYload] (fileUploader.ts:71) 在 XMLHttpRequest.wrapFn (zone.js:1255) 在 ZoneDelegate.invokeTask (zone.js:431)

自定义文件上传 .ts

export class FileUploaderCustom extends FileUploader {

    constructor(
        options: FileUploaderOptions
    ) {
        super(options);
    }

    uploadAllFiles(): void {
        // const _this = this;
        const xhr = new XMLHttpRequest();
        const sendable = new FormData();
        const fakeItem: FileItem = null;
        this.onBuildItemForm(fakeItem, sendable);

        for (const item of this.queue) {
            item.headers = [];
            item.withCredentials = true;
            item.formData = [];
            item.isReady = true;
            item.isUploading = true;
            item.isUploaded = false;
            item.isSuccess = false;
            item.isCancel = false;
            item.isError = false;
            item.progress = 0;
            item.index = void 0;
            if (typeof item._file.size !== 'number') {
                throw new TypeError('The file specified is no longer valid');
            }
            sendable.append('file', item._file, item.file.name);
        }

        if (this.options.additionalParameter !== undefined) {
            Object.keys(this.options.additionalParameter).forEach((key) => {
                sendable.append(key, this.options.additionalParameter[key]);
            })
        }

        xhr.onerror = () => {
            this.onErrorItem(fakeItem, null, xhr.status, null);
        }

        xhr.onabort = () => {
            this.onErrorItem(fakeItem, null, xhr.status, null);
        }

        xhr.open('POST', this.options.url, true);
        xhr.withCredentials = true;
        if (this.options.headers) {
            for (let _i = 0, _a = this.options.headers; _i < _a.length; _i++) {
                const header = _a[_i];
                xhr.setRequestHeader(header.name, header.value);
            }
        }
        if (this.authToken) {
            xhr.setRequestHeader(this.authTokenHeader, this.authToken);
        }

        xhr.onload = () => {
            const headers = this._parseHeaders(xhr.getAllResponseHeaders());
            const response = this._transformResponse(xhr.response, headers);
            const gist = this._isSuccessCode(xhr.status) ? 'Success' : 'Error';
            const method = '_on' + gist + 'Item';
            for (const item of this.queue) {
                this[method](item, response, xhr.status, headers);
            }
            this._onCompleteItem(this.queue[0], response, xhr.status, headers);
        }

        xhr.send(sendable);
    }
}

回应 

this.uploaderUpdate.onSuccessItem = (item, response, status, headers) => {
      this.uploadResult = JSON.parse(response);
      console.log(this.uploadResult)
      if (this.uploadResult.rescode == "0000") {
        this.uploaderUpdate.clearQueue();
        this.editMyContainer = !this.editMyContainer;
        this.toastyService.success(this.uploadResult.Description);
      } else if (this.uploadResult.rescode == "0001") {
        this.toastyService.error(this.uploadResult.ErrorDescription);

      } else if (this.uploadResult.rescode == "0002") {
        this.toastyService.error(this.uploadResult.ErrorDescription);
      }
    };
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